Abrégé

The problem of lost circulation is pertinent to the oil industry. To prevent fluid loss, a lost circulation material (LCM), or more generally, a plugging material, can be used to effectively plug the fractures in the rock formation. If the fractures are in the production zone, it is also ideal to unplug them when the drilling operation is complete. Therefore, a material engineered to degrade after a desired period would be useful. In examples, a plugging material has been developed by gelling an oil-based fluid using a low molecular weight gelator, dibenzylidene sorbitol (DBS). DBS gels are robust and show plugging behavior. DBS is shown to chemically degrade in presence of an acid. Hence, a self-degrading gel can be synthesized by incorporating an acid into the system. Further, by varying the type and concentration of the acid, the degradation time of the gel can be controlled.

Classes IPC  ?

• C09K 8/035 - Additifs organiques
• C09K 8/502 - Compositions à base d'huile
• C09K 8/506 - Compositions à base d'eau ou de solvants polaires contenant des composés organiques

Abrégé

An offshore node deployment system includes a control system, a surface vessel including a deck, and a propulsion system in signal communication with the control system, a node storage container supported by the deck of the surface vessel, wherein the node storage container is configured to store a plurality of nodes which are physically disconnected from each other, and a node deployment system supported by the deck of the surface vessel and controllable by the control system, wherein the node deployment system is configured to retrieve the nodes from the node storage container and deploy the nodes to a subsea location.

Classes IPC  ?

• G01V 1/38 - Séismologie; Prospection ou détection sismique ou acoustique spécialement adaptées aux zones recouvertes d'eau
• B63B 27/22 - Aménagement des équipements de bord pour l'embarquement ou le débarquement des cargaisons ou des passagers des convoyeurs, p.ex. à courroie sans fin ou du type à vis
• B63G 8/00 - Navires submersibles, p.ex. sous-marins

Abrégé

A method for facilitating the management of one or more energy production or processing facilities includes receiving an alert corresponding to an operational anomaly associated with the process equipment, interrogating a data structure linking together and organizing a plurality of distinct data sources, selecting a subset of data sources from the plurality of data sources identified as associated with a potential cause of the alert based on the interrogation of the data structure, statistically analyzing data sourced from the selected subset of data sources, identifying the potential cause of the alert based on the statistical analysis, and recommending a corrective action to resolve the identified potential cause of the alert using the plurality of distinct data sources.

Classes IPC  ?

• G05B 23/02 - Test ou contrôle électrique

Abrégé

A monitoring system includes a flow line, an optical fiber coupled to the flow line, and a receiver coupled to an end of the optical fiber. The receiver is configured to detect at least one acoustic signal from the optical fiber. In addition, the monitoring system includes processor unit to detect a flow obstruction within the flow line based on the acoustic signal.

Classes IPC  ?

• E21B 47/095 - Localisation ou détermination de la position d'objets dans les trous de forage ou dans les puits; Identification des parties libres ou bloquées des tubes par détection d'anomalies acoustiques, p.ex. à l'aide de pulsations de pression de boue
• E21B 47/107 - Localisation des fuites, intrusions ou mouvements du fluide utilisant des moyens acoustiques

Abrégé

In some examples, the disclosure provides a method for determining a drift in clock data that is provided by a clock of a seismic sensor. The sensor is exposed to an ambient temperature that varies over time. The method includes obtaining temperature data associated with the ambient temperature as a function of time. The method also includes obtaining the clock data. The method also includes obtaining timestamp data provided by a global navigation satellite system. The method also includes determining drift data which minimizes a difference of a temporal drift in the clock data, based on the timestamp data and the temperature data. The method also includes outputting corrective data based on the determined drift data.

Classes IPC  ?

• G01V 1/24 - Enregistrement des données sismiques
• G01V 13/00 - Fabrication, étalonnage, nettoyage ou réparation des instruments ou dispositifs couverts par les groupes

Abrégé

In some examples, the disclosure provides a method for deploying a plurality N of seismic sensors, wherein each seismic sensor is adapted to measure seismic energy with at least one gain, within a survey area, the method comprising: obtaining a plurality M of gains from which the at least one gain may be selected; configuring the plurality N of seismic sensors such that, for each given gain of the obtained plurality M of gains, at least N/M seismic sensors are adapted to measure the seismic energy with at least one corresponding gain; and deploying the plurality N of configured seismic sensors on the survey area.

Classes IPC  ?

• G01V 1/20 - Aménagements d'éléments récepteurs, p.ex. oscillogrammes géophoniques
• G01V 1/24 - Enregistrement des données sismiques

Abrégé

An integrated system comprising a desalination plant comprising a reverse osmosis (RO) array configured to produce an RO permeate blending stream, a blending system comprising a flow line for a fines stabilizing additive blending stream and configured to blend the RO permeate blending stream with the fines stabilizing additive blending stream to produce a blended low salinity water stream having a salinity of less than or equal to 5,000, 4,000, 3,000, 2,000, 1,000, 500, 400, or 300 ppm and a molar ratio of divalent cations to monovalent cations of greater than about 0.2, 0.3, or 0.4, a control unit configured to control operation of the blending system, and an injection system for one or more injection wells, wherein the one or more injection wells penetrate an oil-bearing layer of a reservoir. A method is also provided.

Classes IPC  ?

• C02F 1/44 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par dialyse, osmose ou osmose inverse
• B01D 61/02 - Osmose inverse; Hyperfiltration
• B01D 61/12 - Commande ou régulation
• C02F 103/08 - Eau de mer, p.ex. pour le dessalement
• C02F 103/10 - Nature de l'eau, des eaux résiduaires ou des eaux ou boues d'égout à traiter provenant de carrières ou d'activités minières

Abrégé

A method of calibrating a distributed acoustic sensor (DAS) system includes obtaining a backscattered optical signal from a fiber optic cable disposed within a wellbore, determining an origination point within the backscattered optical signal, determining a bottom point within the backscattered optical signal, correlating the origination point and the bottom point with physical depth information for the wellbore, and determining at least a depth calibration for the backscattered optical signal using the correlating. The backscattered optical signal is representative of an acoustic or thermal signal along the fiber optic cable. The origination point identifies a first location at an upper point of the fiber optic cable within the backscattered optical signal, and the bottom point identifies a second location at a lower point of the fiber optic cable within the wellbore. The depth calibration correlates a sensed depth within the backscattered optical signal with a physical depth within the wellbore.

Classes IPC  ?

• E21B 47/04 - Mesure de la profondeur ou du niveau du liquide
• E21B 47/12 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p.ex. pour la diagraphie pendant le forage

Abrégé

A method of characterizing an inflow into a wellbore comprises obtaining an acoustic signal from a sensor within the wellbore, determining a plurality of frequency domain features from the acoustic signal, identifying at least one of a gas phase flow, an aqueous phase flow, or a hydrocarbon liquid phase flow using the plurality of the frequency domain features, and classifying a flow rate of the at least one of the gas phase flow, the aqueous phase flow, or the hydrocarbon liquid phase flow using the plurality of frequency domain features. The acoustic signal comprises acoustic samples across a portion of a depth of the wellbore.

Classes IPC  ?

• G01F 1/66 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en mesurant la fréquence, le déphasage, le temps de propagation d'ondes électromagnétiques ou d'autres types d'ondes, p.ex. en utilisant des débitmètres à ultrasons
• G01H 9/00 - Mesure des vibrations mécaniques ou des ondes ultrasonores, sonores ou infrasonores en utilisant des moyens sensibles aux radiations, p.ex. des moyens optiques
• G01P 5/24 - Mesure de la vitesse des fluides, p.ex. d'un courant atmosphérique; Mesure de la vitesse de corps, p.ex. navires, aéronefs, par rapport à des fluides en mesurant l'influence directe du courant de fluide sur les propriétés d'une onde acoustique de détection
• G01V 1/50 - Analyse des données

Abrégé

Systems and methods are disclosed for managing skin in a subterranean wellbore. In an embodiment, the method includes oscillating a drawdown pressure of the subterranean wellbore in a predetermined pattern that comprises a plurality of alternating drawdown pressure increases and drawdown pressure decreases. The drawdown pressure increases of the predetermined pattern comprise increasing the drawdown pressure at a first rate, and the drawdown pressure decreases of the predetermined pattern comprise decreasing the drawdown pressure at a second rate that is different from the first rate.

Classes IPC  ?

• E21B 43/00 - Procédés ou dispositifs pour l'extraction de pétrole, de gaz, d'eau ou de matériaux solubles ou fusibles ou d'une suspension de matières minérales à partir de puits

Abrégé

A method of abandoning a wellbore can include obtaining a first sample data set within a wellbore, wherein the first sample data set is a sample of an acoustic signal originating within the wellbore; determining a plurality of frequency domain features of the first sample data set; identifying a fluid flow location within the wellbore using the first plurality of frequency domain features; setting a barrier (130A, 131A, 130B, 131B, 130C) at or above the fluid flow location; obtaining a second sample data set above the barrier, wherein the second sample data set is a sample of an acoustic signal originating within the wellbore above the barrier; determining a second plurality of frequency domain features of the second sample data set; and identifying that a fluid flow rate or flow mechanism at the fluid flow location has been reduced or eliminated and/or identifying another fluid flow location using the second plurality of frequency domain features.

Classes IPC  ?

• E21B 47/10 - Localisation des fuites, intrusions ou mouvements du fluide

Abrégé

Example seismic sensors and methods relating thereto are disclosed. In an embodiment, the seismic sensor includes an outer housing and a proof mass disposed in the inner cavity of the outer housing. In addition, the seismic sensor includes a first biasing member positioned in the inner cavity between the proof mass and an outer housing upper end that is configured to flex in response to axial movement of the outer housing relative to the proof mass. Further, the seismic sensor includes a second biasing member positioned in the inner cavity between the first biasing member and the outer housing upper end. Still further, the seismic sensor includes a sensor element positioned in the inner cavity between the proof mass and an outer housing lower end that is configured to generate a potential in response to movement of the outer housing relative to the proof mass.

Classes IPC  ?

• G01V 1/16 - Séismologie; Prospection ou détection sismique ou acoustique Éléments récepteurs de signaux sismiques; Aménagements ou adaptations des éléments récepteurs
• G01V 1/18 - Eléments récepteurs, p.ex. sismomètre, géophone

Abrégé

Example sensor assemblies, seismic sensor incorporating the sensor assemblies, and methods relating thereto are disclosed. In an embodiment, the sensor assembly includes an electrically conductive outer housing, and an electrically insulating holder disposed within the outer housing. The holder comprises a recess. In addition, the sensor assembly includes a sensor element disposed within the recess of the holder. The sensor element is electrically insulated from outer housing by the holder.

Classes IPC  ?

• G01V 1/18 - Eléments récepteurs, p.ex. sismomètre, géophone

Abrégé

A method of cementing a wellbore includes injecting into the wellbore a non-aqueous fluid; injecting into the wellbore a cement slurry and a non-ionic surfactant composition after injecting the non-aqueous fluid; and allowing the cement slurry to set, wherein the non-ionic surfactant composition comprises an alkyl end-capped ethoxylated fatty alcohol, a chain extended non-ionic surfactant, or a combination comprising at least one of the foregoing.

Classes IPC  ?

• E21B 33/138 - Plâtrage de la paroi du trou de forage; Injections dans la formation
• E21B 33/14 - Procédés ou dispositifs de cimentation, de bouchage des trous, des fissures ou analogues pour la cimentation des tubes dans les trous de forage ou de sondage
• E21B 43/26 - Procédés pour activer la production par formation de crevasses ou de fractures
• C09K 8/44 - Compositions de cimentation, p.ex. pour la cimentation des tubes dans les trous de forage; Compositions de bouchage, p.ex. pour tuer des puits contenant uniquement des liants organiques

Abrégé

A monitoring system (100), comprising a flow line (114) comprising at least one bend (120), an optical fiber (116) coupled to an exterior of the flow line, wherein the optical fiber is wrapped around at least a portion of the flow line, and a receiver (164) coupled to an end of the optical fiber, wherein the receiver is configured to detect at least one acoustic signal from the optical fiber.

Classes IPC  ?

• E21B 47/10 - Localisation des fuites, intrusions ou mouvements du fluide
• E21B 47/12 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p.ex. pour la diagraphie pendant le forage
• E21B 41/00 - Matériel ou accessoires non couverts par les groupes

Abrégé

A method of detecting an event by: obtaining a first sample data set; determining a frequency domain feature(s) of the first sample data set over a first time period; determining a first threshold for the a frequency domain feature(s) using the first sample data set; determining that the frequency domain feature(s) matches the first threshold; determining the presence of an event during the first time period based on determining that the frequency domain feature(s) matches the first threshold; obtaining a second sample data set; determining a frequency domain feature(s) of the second sample data set over a second time period; determining a second threshold for the frequency domain feature(s) using the second sample data set; determining that the frequency domain feature(s) matches the second threshold; and determining the presence of the event during the second time period based on determining that the frequency domain feature(s) matches the second threshold.

Classes IPC  ?

• G01H 3/04 - Fréquence
• E21B 47/10 - Localisation des fuites, intrusions ou mouvements du fluide
• G01H 9/00 - Mesure des vibrations mécaniques ou des ondes ultrasonores, sonores ou infrasonores en utilisant des moyens sensibles aux radiations, p.ex. des moyens optiques

Abrégé

A scale inhibition fluid for use in a wellbore comprises a layered double hydroxide (LDH) having a scale inhibitor (SI) intercalated between positively-charged layers thereof. Also disclosed is a scale treatment fluid comprising such an LDH and SI and methods of making and using same. The material can be formed prior to use in a wellbore, formed during a treatment, formed within the wellbore, or the LDH can be recharged within a wellbore by injecting a SI after the material has been in place within the wellbore, or any combination thereof.

Classes IPC  ?

• C09K 8/528 - Compositions pour éviter, limiter ou éliminer les dépôts, p.ex. pour le nettoyage les dépôts inorganiques, p.ex. sulfates ou carbonates
• C09K 8/536 - Compositions pour éviter, limiter ou éliminer les dépôts, p.ex. pour le nettoyage caractérisées par leur forme ou par la forme de leurs composants, p.ex. matériaux encapsulés
• C01F 7/00 - Composés de l'aluminium

Abrégé

A method of identifying inflow locations along a wellbore comprises obtaining an acoustic signal from a sensor within the wellbore, determining a plurality of frequency domain features from the acoustic signal, and identifying, using a plurality of fluid flow models, a presence of at least one of a gas phase inflow, an aqueous phase inflow, or a hydrocarbon liquid phase inflow at one or more fluid flow locations. The acoustic signal comprises acoustic samples across a portion of a depth of the wellbore, and the plurality of frequency domain features are obtained across a plurality of depth intervals within the portion of the depth of the wellbore. Each fluid flow model of the plurality of fluid inflow models uses one or more frequency domain features of the plurality of the frequency domain features, and at least two of the plurality of fluid flow models are different.

Classes IPC  ?

• E21B 47/107 - Localisation des fuites, intrusions ou mouvements du fluide utilisant des moyens acoustiques
• E21B 41/00 - Matériel ou accessoires non couverts par les groupes
• E21B 47/135 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p.ex. pour la diagraphie pendant le forage par énergie électromagnétique, p.ex. gammes de fréquence radio utilisant des ondes lumineuses, p.ex. ondes infrarouges ou ultraviolettes

Abrégé

A method of identifying events includes obtaining an acoustic signal from a sensor, determining one or more frequency domain features from the acoustic signal, providing the one or more frequency domain features as inputs to a plurality of event detection models, and determining the presence of one or more events using the plurality of event detection models. The one or more frequency domain features are obtained across a frequency range of the acoustic signal, and at least two of the plurality of event detection models are different.

Classes IPC  ?

• E21B 47/107 - Localisation des fuites, intrusions ou mouvements du fluide utilisant des moyens acoustiques
• E21B 41/00 - Matériel ou accessoires non couverts par les groupes
• E21B 47/135 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p.ex. pour la diagraphie pendant le forage par énergie électromagnétique, p.ex. gammes de fréquence radio utilisant des ondes lumineuses, p.ex. ondes infrarouges ou ultraviolettes

Abrégé

A desalination system includes a desalination platform, a first skid disposed on a first deck of the desalination platform, the first skid including at least one of a first filtration unit configured to produce a first filtrate stream, and a first permeate unit configured to produce a first permeate stream, a first interconnecting pipework coupled to the first skid, and a first pipework support disposed on the first deck, wherein the first interconnecting pipework is disposed on the first pipework support.

Classes IPC  ?

• E21B 43/20 - Déplacement par l'eau
• E21B 43/40 - Séparation associée à la réinjection de matériaux séparés
• C02F 1/44 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par dialyse, osmose ou osmose inverse
• B01D 61/02 - Osmose inverse; Hyperfiltration

Abrégé

A virtual seismic shot record is generated based at least in part on seismic interferometry of the passive seismic data. Then, a frequency bandwidth of the virtual seismic shot record is determined, wherein the frequency bandwidth comprises a plurality of frequencies. The virtual seismic shot record is transformed into a frequency- dependent seismic shot record based on a first frequency of the plurality of frequencies. Further, a phase shift is applied to the frequency-dependent seismic shot record. A first velocity model is generated from the phase shifted frequency-dependent seismic shot record. A second velocity model may be generated using full-waveform inversion (FWI). One or more depth slices are identified from the second velocity model. A seismic image is generated based on the one or more depth slices for use with seismic exploration above a region of subsurface including a hydrocarbon reservoir and containing structural features conducive to a presence, migration, or accumulation of hydrocarbons.

Classes IPC  ?

• G01V 1/30 - Analyse
• G01V 1/38 - Séismologie; Prospection ou détection sismique ou acoustique spécialement adaptées aux zones recouvertes d'eau

Abrégé

A predictive system for monitoring fouling of membranes of a desalination or water softening plant comprising ultrafiltration (UF) membranes, reverse osmosis (RO) membranes, and/or nanofiltration (NF) membranes, the system including one or more UF skids comprising a plurality of UF units, each UF unit containing therein a plurality of UF membranes; one or more RO/NF skids comprising one or more RO/NF arrays, wherein each of the one or more RO/NF arrays comprises a plurality of RO units, with each RO unit containing therein a plurality of RO membranes, a plurality of NF units, with each NF unit containing therein a plurality of NF membranes; or a combination thereof; UF sensors and/or RO/NF sensors; and a controller comprising a processor in signal communication with the UF sensors and/or the RO/NF sensors.

Classes IPC  ?

• C02F 1/00 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout
• B01D 61/12 - Commande ou régulation
• B01D 61/22 - Commande ou régulation
• C02F 1/44 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par dialyse, osmose ou osmose inverse
• C02F 103/08 - Eau de mer, p.ex. pour le dessalement
• B01D 61/02 - Osmose inverse; Hyperfiltration
• B01D 61/14 - Ultrafiltration; Microfiltration
• B01D 61/58 - Procédés à plusieurs étapes
• B01D 65/02 - Nettoyage ou stérilisation de membranes
• B01D 65/10 - Test de membranes ou d'appareils à membranes; Détection ou réparation de fuites

Abrégé

A control system configured to control operation of reverse osmosis (RO) array(s), nanofiltration (NF) array(s) and/or a blending system including a control panel (CP), regulatory controllers (RCs), and a supervisory controller (SC), wherein the SC is in signal communication with the CP, and with the RCs, wherein the SC is configured to: receive user inputs from the CP, and receive inputs from RCs regarding data from sensors, wherein the RCs are in signal communication with the plurality of sensors, wherein the RCs are configured to: receive data from the sensors, provide outputs to and receive permissions from the SC, and instruct devices in response to the received permissions from the SC, and wherein the SC is configured to: monitor trends in the inputs regarding and/or predict outcomes from data received from the RCs and determine the permissions for RCs based on the monitored trends and/or user inputs from the CP.

Classes IPC  ?

• C02F 1/44 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par dialyse, osmose ou osmose inverse
• B01D 61/02 - Osmose inverse; Hyperfiltration
• B01D 61/12 - Commande ou régulation
• E21B 43/20 - Déplacement par l'eau
• C02F 103/08 - Eau de mer, p.ex. pour le dessalement
• C02F 103/10 - Nature de l'eau, des eaux résiduaires ou des eaux ou boues d'égout à traiter provenant de carrières ou d'activités minières

Abrégé

A method of dynamically allocating a total amount of produced water (PW) from a reservoir during enhanced oil recovery (EOR) via a low salinity or softened water EOR floodby receiving measurement data; receiving reservoir configuration information comprising: an EOR injection rate associated with one or more EOR injection zones, a disposal zone injection rate associated with one or more disposal injection zones, and a non-reinjection disposal rate associated with one or more non-reinjection disposal routes; determining a blending rate comprising at least a portion of the PW production rate and at least a portion of the low salinity or softened water injection rate to provide a blended injection fluid; blending at least a portion of the PW with at least a portion of the low salinity or softened water at the blending rate; and dynamically allocating the PW production rate among injection and/or non-reinjection routes.

Classes IPC  ?

• E21B 43/16 - Procédés de récupération assistée pour l'extraction d'hydrocarbures
• E21B 43/20 - Déplacement par l'eau
• E21B 43/38 - Aménagements pour séparer les matériaux produits par le puits dans le puits

Abrégé

Embodiments relate generally to methods for extracting a core (114) from a percussion side wall core bullet (100) for a digital tomographic description and direct numerical simulations. A method for extracting a core (114) from a percussion side wall core bullet (100) for a digital tomographic description and direct numerical simulations includes pushing a free end (112) of a wire (110) of a wire saw (108) through the core (114). The core (114) is positioned within the percussion side wall core bullet (100). In addition, the method includes attaching the free end (112) to a locking mechanism (113) of the wire saw (108). Further, the method includes cutting the core (114) from the percussion side wall core bullet (100). The method also includes removing the core (114) from the percussion side wall core bullet (100).

Classes IPC  ?

• E21B 25/00 - Appareils pour recueillir ou retirer des carottes intactes, p.ex. tubes carottiers, extracteurs de carottes
• E21B 49/04 - Test pour déterminer la nature des parois des trous de forage; Essais de couches; Procédés ou appareils pour prélever des échantillons du terrain ou de fluides en provenance des puits, spécialement adaptés au forage du sol ou aux puits par prélèvements mécaniques d'échantillons du terrain au moyen de projectiles pénétrant dans la paroi
• E21B 49/06 - Test pour déterminer la nature des parois des trous de forage; Essais de couches; Procédés ou appareils pour prélever des échantillons du terrain ou de fluides en provenance des puits, spécialement adaptés au forage du sol ou aux puits par prélèvements mécaniques d'échantillons du terrain au moyen d'outils de forage latéral ou de dispositifs de raclage
• B23D 49/00 - Machines à scier ou dispositifs de sciage à lames animées d'un mouvement rectiligne alternatif
• B28D 1/00 - Travail de la pierre ou des matériaux analogues p.ex. briques, béton, non prévu ailleurs; Machines, dispositifs, outils à cet effet

Abrégé

A system for processing acoustic data to identify an event comprises a receiver unit comprising a processor (168) and a memory (170), where the receiver unit is configured to receive a signal from a sensor (164) disposed along a sensor path or across a sensor area, wherein a processing application is stored in the memory. The processing application, when executed on the processor, configures the processor to: receive the signal from the sensor (164), where the signal comprises an indication of an acoustic signal received at one or more lengths along the sensor path or across a portion of the sensor area, wherein the signal is indicative of the acoustic signal across a frequency spectrum; determine a plurality of frequency domain features of the signal across the frequency spectrum; and generate an output comprising the plurality of frequency domain features.

Classes IPC  ?

• E21B 47/10 - Localisation des fuites, intrusions ou mouvements du fluide

Abrégé

A seismic sensor includes an outer housing having a central axis, an upper end, a lower end, and an inner cavity. In addition, the seismic sensor includes a proof mass moveably disposed in the inner cavity of the outer housing. The outer housing is configured to move axially relative to the proof mass. Further, the seismic sensor includes a first biasing member disposed in the inner cavity and axially positioned between the proof mass and one of the ends of the outer housing. The first biasing member is configured to flex in response to axial movement of the outer housing relative to the proof mass. The first biasing member comprises a disc including a plurality of circumferentially-spaced slots extending axially therethrough. Still further, the seismic sensor includes a sensor element disposed in the inner cavity and axially positioned between the first biasing member and one of the ends of the outer housing. The sensor element includes a piezoelectric material configured to deflect and generate a potential in response to the axial movement of the outer housing relative to the proof mass and the flexing of the first biasing member.

Classes IPC  ?

• G01V 1/18 - Eléments récepteurs, p.ex. sismomètre, géophone
• G01P 15/09 - Mesure de l'accélération; Mesure de la décélération; Mesure des chocs, c. à d. d'une variation brusque de l'accélération en ayant recours aux forces d'inertie avec conversion en valeurs électriques ou magnétiques au moyen de capteurs piézo-électriques

Abrégé

A seismic sensor for a seismic survey includes an outer housing having a central axis, a first end, and a second end opposite the first end. The first end comprises a portion made of a clear material configured to transmit light having a frequency in the visible or infrared range of the electromagnetic spectrum. In addition, the seismic sensor includes a proof mass moveably disposed in the outer housing. The proof mass includes a power source. Further, the seismic sensor includes a sensor element disposed in the outer housing and configured to detect the movement of the outer housing relative to the proof mass. Still further, the seismic sensor includes electronic circuitry coupled to the sensor element and the power source. The seismic sensor also includes a light guide assembly having a first end adjacent the clear portion of the first end of the outer housing and a second end adjacent the electronic circuitry. The light guide assembly is configured to transmit light in an axial direction between the first end of the light guide assembly the clear section and to transmit light in a non-axial direction between the second end of the light guide assembly and the electronic circuitry.

Classes IPC  ?

• G01V 1/18 - Eléments récepteurs, p.ex. sismomètre, géophone
• G01H 9/00 - Mesure des vibrations mécaniques ou des ondes ultrasonores, sonores ou infrasonores en utilisant des moyens sensibles aux radiations, p.ex. des moyens optiques

Abrégé

A method includes producing a first blended low salinity injection water for injection into at least one injection well (20) that penetrates a first region (56) of an oil-bearing reservoir and producing a second blended low salinity injection water for injection into at least one injection well (20') that penetrates a second region (56') of an oil- bearing reservoir (22). The reservoir rock of the first and second regions has first and second rock compositions, respectively, that present different risks of formation damage. The first and second blended low salinity injection waters comprise variable amounts of nanofiltration permeate (13) and reverse osmosis permeate (9). The compositions of the first and second blended low salinity injection waters are maintained within first and second predetermined operating envelopes, respectively, that balance improving enhanced oil recovery from the first and second regions (56, 56') while reducing formation damage upon injecting the first and second blended low salinity injection waters into the oil-bearing reservoir (22).

Classes IPC  ?

• E21B 43/20 - Déplacement par l'eau
• E21B 21/06 - Dispositions pour traiter les fluides de forage à l'extérieur du trou de forage
• B01D 61/02 - Osmose inverse; Hyperfiltration
• C02F 1/44 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par dialyse, osmose ou osmose inverse

Abrégé

A method of detecting sand ingress within a wellbore includes obtaining a sample data set, determining a plurality of frequency domain features of the sample data set over a plurality of depth ranges, determining a presence of sand ingress at a first depth range of the plurality of depth ranges within the wellbore based on determining that the plurality of frequency domain features over the first depth range match a sand ingress signature, and determining a presence of sand migration along a second depth range of the plurality of depths within the wellbore based on determining that the plurality of frequency domain features over the second depth range match a sand migration signature. The sample data set is a sample of an acoustic signal originating within a wellbore comprising a fluid, and wherein the sample data set is representative of the acoustic signal across a frequency spectrum.

Classes IPC  ?

• E21B 43/04 - Réalisation de filtres à graviers
• E21B 43/12 - Procédés ou appareils pour commander l'écoulement du fluide extrait vers ou dans les puits
• E21B 47/00 - Relevés dans les trous de forage ou dans les puits
• E21B 47/10 - Localisation des fuites, intrusions ou mouvements du fluide
• E21B 47/12 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p.ex. pour la diagraphie pendant le forage

Abrégé

A method for analysing a crude oil to determine the amount of organic acid compounds contained in the crude oil comprising: extracting the organic acid compounds from a sample of crude oil to form an extract comprising the organic acid compounds and determining the amount of the extracted organic acids; dissolving the extract in a polar solvent to form a solution of the extracted organic acid compounds; introducing a sample of the solution of the extracted organic acid to an apparatus comprising a reversed phase liquid chromatography (LC) column and a mass spectrometer (MS) arranged in series wherein the reversed phase LC column contains a hydrophobic sorbent and the mobile phase for the LC column comprises a polar organic solvent; separating the organic acid compounds in the LC column of the LC-MS apparatus and continuously passing the separated organic acid compounds from the LC column to the MS of the LC-MS apparatus to ionize the organic acid compounds and to obtain a chromatogram with mass spectral data over time for the ionized organic acid compounds; determining the area(s) under the peak(s) in an extracted ion chromatogram derived from the mass spectral data assigned to one or more organic acid compounds; determining the amount of the organic acid compound(s) in the sample by comparing the area under the peak(s) assigned to the organic acid compound(s) with the area under a peak in an extracted ion chromatogram assigned to a specific amount of a standard organic acid compound; and extrapolating from the amount of the organic acid compound(s) in the sample to provide the total amount of the organic acid compound(s) in the extract.

Classes IPC  ?

• G01N 30/72 - Spectromètres de masse
• G01N 30/86 - Analyse des signaux
• G01N 33/28 - Huiles
• G01N 1/40 - Concentration des échantillons

Abrégé

An integrated system comprising: a desalination plant comprising a reverse osmosis (RO) array to produce an RO permeate blending stream and a nanofiltration (NF) array to produce an NF permeate blending stream; a blending system; a control unit; an injection system for an injection well that penetrates an oil-bearing layer of a reservoir; and wherein the blending system is to blend the RO permeate blending stream and the NF permeate blending stream to produce a blended injection water stream, wherein the control unit is to dynamically alter operation of the blending system to adjust amounts of at least one of the RO permeate blending stream and the NF permeate blending stream to alter the composition of the blended injection water stream from an initial composition to a target composition.

Classes IPC  ?

• C02F 1/44 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par dialyse, osmose ou osmose inverse
• E21B 43/20 - Déplacement par l'eau

Abrégé

The present invention relates to expandable polymeric microparticles comprising cross-linked copolymer chains having structural units derived from (i) a water-soluble or water-dispersible monomer with a betaine group, (ii) a water-soluble or water-dispersible non- ionic comonomer, and, (iii) a water-soluble or water-dispersible non-labile cross-linking monomer having at least two sites of ethylenic unsaturation wherein the copolymer chains of the polymeric microparticles comprise from 9.5 to 45 mol% of structural units derived from the betaine monomer and from 0.1 to 10 mol% of structural units derived from the non-labile cross-linking monomer; the polymeric microparticles have an unexpanded average particle diameter in the range from 0.05 to 5 µm and wherein the polymeric microparticles expand in size when dispersed in an aqueous fluid at or above a transition temperature.

Classes IPC  ?

• C09K 8/508 - Composés macromoléculaires
• C09K 8/512 - Composés macromoléculaires contenant des agents de réticulation
• C09K 8/516 - Compositions pour le plâtrage des parois de trous de forage, c. à d. compositions pour la consolidation temporaire des parois des trous de forage caractérisées par leur forme ou par la forme de leurs composants, p.ex. matériaux encapsulés
• C09K 8/588 - Compositions pour les méthodes de récupération assistée pour l'extraction d'hydrocarbures, c. à d. pour améliorer la mobilité de l'huile, p.ex. fluides de déplacement caractérisées par l'utilisation de polymères spécifiques

Abrégé

An integrated system comprising: a desalination plant comprising a reverse osmosis (RO) array to produce an RO permeate blending stream and a nanofiltration (NF) array to produce an NF permeate blending stream; a blending system; a control unit; an injection system for one or more injection wells that penetrate an oil-bearing layer of a reservoir; and a production facility to separate fluids produced from one or more production wells that penetrate the oil-bearing layer of the reservoir and to deliver a produced water (PW) stream to the blending system, wherein the blending system is to blend the RO permeate and NF permeate blending streams with the PW stream to produce a blended low salinity water stream, wherein the control unit is to dynamically alter operation of the blending system to adjust amounts of at least one of the RO permeate blending stream and the NF permeate blending stream to maintain a composition of the blended low salinity water stream within a predetermined operating envelope.

Classes IPC  ?

• B01D 61/02 - Osmose inverse; Hyperfiltration
• C02F 1/44 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par dialyse, osmose ou osmose inverse
• G05D 11/00 - Commande du rapport des débits
• C02F 103/08 - Eau de mer, p.ex. pour le dessalement
• C02F 103/10 - Nature de l'eau, des eaux résiduaires ou des eaux ou boues d'égout à traiter provenant de carrières ou d'activités minières

Abrégé

A liquefaction system for removing heat from a process fluid including a plurality of refrigerant systems configured to liquefy at least a portion of the process fluid in a process feed gas line coupled to the plurality of refrigerant systems, and a common end flash system configured to receive process fluid from the plurality of refrigerant systems. A method for liquefying a process fluid by operating a plurality of refrigeration systems in parallel, wherein each refrigeration system receives a portion of the process fluid, transferring heat from each portion of the process fluid with the corresponding refrigeration system, supplying the portions of the process fluid from the refrigeration systems to a common end flash system, and lowering the pressure of the portions of the process fluid with the common end flash system to provide a liquefied process fluid and an end flash gas.

Classes IPC  ?

• F25J 1/00 - Procédés ou appareils de liquéfaction ou de solidification des gaz ou des mélanges gazeux
• F25J 1/02 - Procédés ou appareils de liquéfaction ou de solidification des gaz ou des mélanges gazeux nécessitant l'emploi d'une réfrigération, p.ex. de l'hélium, de l'hydrogène

Abrégé

A liquefaction system for removing heat from a process fluid to condense the process fluid, the liquefaction system including a primary heat exchanger configured to remove heat from the process fluid via heat exchange with one or more refrigerants, a compressor configured to compress the one or more refrigerants, a first secondary heat exchanger configured to remove heat from the one or more refrigerants via heat exchange with ambient air, and a second secondary heat exchanger configured to remove heat from the one or more refrigerants via heat exchange with ambient water.

Classes IPC  ?

• F25J 1/00 - Procédés ou appareils de liquéfaction ou de solidification des gaz ou des mélanges gazeux
• F25J 1/02 - Procédés ou appareils de liquéfaction ou de solidification des gaz ou des mélanges gazeux nécessitant l'emploi d'une réfrigération, p.ex. de l'hélium, de l'hydrogène

Abrégé

A process for use in managing a hydrocarbon production system includes: selecting, from among a plurality of changes proposed to operating parameters of the hydrocarbon production system, the proposed change with the greatest estimated positive change in production; assessing whether the selected change violates an operating constraint; based on said assessment, producing a valid change based on at least the selected change or identifying the selected change as an unusable change, iterating the above steps, the iteration excluding the valid change from the plurality of proposed changes; and implementing at least one valid change, the number of implemented valid changes being less than the number of proposed changes.

Classes IPC  ?

• E21B 43/00 - Procédés ou dispositifs pour l'extraction de pétrole, de gaz, d'eau ou de matériaux solubles ou fusibles ou d'une suspension de matières minérales à partir de puits
• E21B 41/00 - Matériel ou accessoires non couverts par les groupes

Abrégé

A process for reducing the permeability to water of a thief zone of a porous and permeable subterranean petroleum reservoir by injecting a dispersion of polymeric microparticles in an aqueous fluid down a well and into the thief zone, wherein the polymeric microparticles comprise crosslinked copolymer chains having structural units derived from (i) a water-soluble or water- dispersible monomer with a betaine group, (ii) a water-insoluble monomer, and, (iii) a cross- linking monomer having at least two sites of ethylenic unsaturation, and the polymeric microparticles have a transition temperature above the maximum temperature encountered in the well and at or below the maximum temperature encountered in the thief zone and, and the polymeric microparticles expand in size in the thief zone when they encounter a temperature at or greater than the transition temperature so as to reduce the permeability of the thief zone to water.

Classes IPC  ?

• C09K 8/035 - Additifs organiques
• C09K 8/508 - Composés macromoléculaires
• C09K 8/512 - Composés macromoléculaires contenant des agents de réticulation
• C09K 8/516 - Compositions pour le plâtrage des parois de trous de forage, c. à d. compositions pour la consolidation temporaire des parois des trous de forage caractérisées par leur forme ou par la forme de leurs composants, p.ex. matériaux encapsulés
• C09K 8/588 - Compositions pour les méthodes de récupération assistée pour l'extraction d'hydrocarbures, c. à d. pour améliorer la mobilité de l'huile, p.ex. fluides de déplacement caractérisées par l'utilisation de polymères spécifiques
• C08F 230/02 - Copolymères de composés contenant un ou plusieurs radicaux aliphatiques non saturés, chaque radical ne contenant qu'une seule liaison double carbone-carbone et contenant du phosphore, du sélénium, du tellure ou un métal contenant du phosphore

Abrégé

A desalination system comprising: a feed pump having an inlet side and an outlet side; a first RO stage having an inlet, RO permeate outlet and RO concentrate outlet; a second RO stage having an inlet, RO permeate outlet and RO concentrate outlet and an NF stage having an inlet, NF permeate outlet and an NF concentrate outlet; and, a set of conduits adapted to connect: (a) the outlet side of the feed pump to the inlet of the first RO stage; (b) the concentrate outlet of the first RO stage to (i) the inlet of the second RO stage and to the inlet of the NF stage; and (c) the permeate outlet of the first RO stage, the permeate outlet of the second RO stage and the permeate outlet of the NF stage either directly or indirectly to a low salinity water injection line.

Classes IPC  ?

• C02F 1/44 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par dialyse, osmose ou osmose inverse
• C02F 9/00 - Traitement en plusieurs étapes de l'eau, des eaux résiduaires ou des eaux d'égout
• B01D 61/02 - Osmose inverse; Hyperfiltration
• C02F 103/08 - Eau de mer, p.ex. pour le dessalement
• B01D 61/08 - Appareils à cet effet

Abrégé

A method of detecting a leak event within a wellbore can include inducing a pressure differential within a wellbore comprising a fluid, obtaining a sample data set representative of the acoustic signal across a frequency spectrum while inducing the pressure differential, determining a plurality of frequency domain features of the sample data set, determining a presence of a leak event at one or more depths within the wellbore based on determining that the plurality of frequency domain features match a leak event signature, correlating the leak event with the induced pressure differential, and determining a presence and location of a leak within the wellbore based on the presence of the leak event and the correlating of the leak event with the induced pressure differential.

Classes IPC  ?

• E21B 47/10 - Localisation des fuites, intrusions ou mouvements du fluide

Abrégé

A method for recovering crude oil from a reservoir comprising injecting into an oil-bearing reservoir alternating slugs of an aqueous displacement fluid comprising an aqueous solution of zinc chloride or zinc bromide and of an aqueous spacer fluid characterized in that: a) the pH of each of the slugs of aqueous displacement fluid is less than 5.5 and the pH of each of the slugs of aqueous spacer fluid is less than 8.5; b) the number of injected slugs of aqueous displacement fluid, n, is in the range of 15 to 1000 per swept pore volume, PVR; c) the injected pore volume of each individual slug, PVSlug-i, of aqueous displacement fluid is in the range of 10-12 to 10-2 of the PVR; d) the total injected pore volume of the slugs of aqueous displacement fluid is in the range of 10-8 to 10-1 of the PVR; e) the injected pore volume of each individual slug of aqueous spacer fluid, PVSpacer-i, is in the range of 0.0001 to 0.1000 of the PVR; f) the total injected pore volume of the slugs of aqueous spacer fluid is in the range of 0.9000000 to 0.9999999 of the PVR; g) the reservoir rock has a dispersivity, α, in the range of 1 to 30; and 20 h) the quantity of zinc delivered to the reservoir by the plurality of slugs of aqueous displacement fluid is equal to or greater than a predetermined minimum quantity (MQ).

Classes IPC  ?

• C09K 8/58 - Compositions pour les méthodes de récupération assistée pour l'extraction d'hydrocarbures, c. à d. pour améliorer la mobilité de l'huile, p.ex. fluides de déplacement
• E21B 43/00 - Procédés ou dispositifs pour l'extraction de pétrole, de gaz, d'eau ou de matériaux solubles ou fusibles ou d'une suspension de matières minérales à partir de puits

Abrégé

A method for recovering crude oil from a reservoir comprising at least one layer of reservoir rock having crude oil and a formation water within the pore space thereof wherein the layer(s) of reservoir rock is penetrated by at least one injection well and at least one production well, the method comprising: injecting into the layer(s) of reservoir rock from the injection well, alternating slugs of an aqueous displacement fluid comprising a concentrated solution of a water-soluble additive in an aqueous solvent and of an aqueous spacer fluid characterized in that: (a) the number of injected slugs of aqueous displacement fluid, n, is in the range of 15 to 1000 per swept pore volume, PVR, of the layer(s) of reservoir rock; (b) the injected pore volume of each individual slug, PVSlug-i, of aqueous displacement fluid is in the range of 10-12 to 10-2 of the swept pore volume, PVR, of the layer(s) of reservoir rock; (c) the total injected pore volume of the slugs of aqueous displacement fluid is in the range of 10-8 to 10-1 of the swept pore volume, PVR, of the layer(s) of reservoir rock; (d) the injected pore volume of each individual slug of aqueous spacer fluid, PVSpacer-i, is in the range of 0.0001 to 0.1000 of the swept pore volume, PVR, of the layer(s) of reservoir rock; (e) the total injected pore volume of the slugs of aqueous spacer fluid is in the range of 0.9000000 to 0.9999999 of the swept pore volume, PVR, of the layer(s) of reservoir rock; (f) the reservoir rock has a dispersivity, α, in the range of 1 to 30% of the interwell distance between the injection well and production well; (g) the amount of additive delivered to the layer(s) of reservoir rock by the plurality of slugs of aqueous displacement fluid is equal to or greater than a predetermined minimum additive quantity (MAQ).

Classes IPC  ?

• E21B 43/20 - Déplacement par l'eau
• C09K 8/58 - Compositions pour les méthodes de récupération assistée pour l'extraction d'hydrocarbures, c. à d. pour améliorer la mobilité de l'huile, p.ex. fluides de déplacement

Abrégé

Methods of drilling earth formations may involve removing a portion of an underlying earth formation utilizing cutting elements of an earth-boring drill bit. A rotational speed of the drill string may be sensed utilizing a first sensor. A rate of penetration of the drill string during advancement of the earth-boring drill bit may be sensed utilizing a second sensor. An instantaneous average depth of cut of cutting elements of the earth-boring drill bit may be determined utilizing a control unit to calculate the instantaneous average depth of cut based on a sensed rotational speed of the drill string and a sensed speed of advancement of the drill string. The weight on the earth-boring drill bit may be increased utilizing the drawworks when the instantaneous average depth of cut is less than the predetermined minimum depth of cut.

Classes IPC  ?

• E21B 44/00 - Systèmes de commande automatique spécialement adaptés aux opérations de forage, c. à d. systèmes à fonctionnement autonome ayant pour rôle d'exécuter ou de modifier une opération de forage sans l'intervention d'un opérateur humain, p.ex. systèmes de ; Systèmes spécialement adaptés à la surveillance de plusieurs variables ou conditions de forage
• E21B 41/00 - Matériel ou accessoires non couverts par les groupes
• E21B 10/00 - Trépans

Abrégé

A method for selecting an aqueous displacement fluid comprising an aqueous solution of dissolved phosphate species includes obtaining reservoir parameters for a reservoir, receiving an input comprising a permitted loss of dissolved phosphate species resulting from mixing of the aqueous displacement fluid and resident water following injection of a selected pore volume of the aqueous displacement fluid, selecting an aqueous displacement fluid, and determining that a composition of the aqueous displacement fluid is within an operating envelope using the reservoir parameters and the permitted loss of dissolved phosphate species. The reservoir parameters comprise physical characteristics of the reservoir and chemical characteristics of the resident water. The operating envelope defines boundary conditions for one or more parameters of the composition of the aqueous displacement fluid to limit a loss of dissolved phosphate species upon injection into the reservoir to less than or equal to the permitted loss.

Classes IPC  ?

• C09K 8/58 - Compositions pour les méthodes de récupération assistée pour l'extraction d'hydrocarbures, c. à d. pour améliorer la mobilité de l'huile, p.ex. fluides de déplacement
• E21B 43/16 - Procédés de récupération assistée pour l'extraction d'hydrocarbures
• E21B 43/20 - Déplacement par l'eau

Abrégé

A method for recovering crude oil from a reservoir wherein the reservoir has a temperature in the range of 20 to 150°C and the formation water has a pH of less than 7.5 and a concentration of dissolved hydrogen sulfide of less than 10 mg/L, (0.29 mmol/L), the method comprising: injecting an aqueous displacement fluid into the reservoir and recovering crude oil from the reservoir characterized in that the aqueous displacement fluid has: (a) (i) at least one zinc salt, (ii) at least one chloride salt, and optionally, (iii) at least one bromide salt dissolved therein; (b) a concentration of dissolved zinc in the range of 100 to 3,750 mg/L, preferably, 175 to 3,750 mg/L, wherein the dissolved zinc is in the form of hydrated Zn2+ ions, one or more hydrated [ZnCl4-n]n-2 species wherein n is an integer selected from 0, 1, 2 and 3, and, optionally, one or more hydrated [ZnBr4-n]n-2 species wherein n is an integer selected from 0, 1, 2 and 3; (c) a mol% of bromide anions of from 0 to 10 mol% based on the total molar concentration of chloride and bromide anions; (d) a pH of less than 7.5; and (e) a mole fraction of the sum of the hydrated [ZnCl4-n]n-2 species of at least 0.4, preferably, at least 0.5, more preferably, at least 0.75, most preferably, at least 0.9 based on the total molar concentration of dissolved zinc species.

Classes IPC  ?

• C09K 8/58 - Compositions pour les méthodes de récupération assistée pour l'extraction d'hydrocarbures, c. à d. pour améliorer la mobilité de l'huile, p.ex. fluides de déplacement
• E21B 43/00 - Procédés ou dispositifs pour l'extraction de pétrole, de gaz, d'eau ou de matériaux solubles ou fusibles ou d'une suspension de matières minérales à partir de puits

Abrégé

The present invention relates to betainised crosslinked polymeric microparticles, a composition comprising the same as a temperature-sensitive dispersion in water and its use in a method of modifying the penneability to water of a thief zone of a subterranean petroleum reservoir. In an aspect, the present invention provides a process for reducing the permeability to water of a thief zone of a porous and permeable subterranean petroleum reservoir, said process comprising: injecting a composition comprising a dispersion of betainised crosslinked polymeric microparticles in an aqueous fluid down a well and into a thief zone, wherein the betainised crosslinked polymeric microparticles have a transition temperature which is at or below the maximum temperature encountered in the thief zone and greater than the maximum temperature encountered in the well, and wherein the betainised crosslinked polymeric microparticles are solvated by water, expand in size and optionally aggregate in the thief zone when they encounter a temperature greater than the transition temperature so as to reduce the permeability of the thief zone to water.

Classes IPC  ?

• C09K 8/575 - Compositions à base d'eau ou de solvants polaires contenant des composés organiques
• C09K 8/588 - Compositions pour les méthodes de récupération assistée pour l'extraction d'hydrocarbures, c. à d. pour améliorer la mobilité de l'huile, p.ex. fluides de déplacement caractérisées par l'utilisation de polymères spécifiques
• C08F 8/00 - Modification chimique par post-traitement
• C11D 1/90 - Bétaïnes

Abrégé

A method of operating a filtration unit comprising a filtration vessel containing at least one dead-end filtration element, the or each filtration element comprised of a plurality of hollow fibre microfiltration or ultrafiltration membranes wherein: during filtration, feed water containing suspended particulate material is fed simultaneously to the inside of the hollow fibres through both ends thereof and filtrate is removed from the outside of the hollow fibres through an outlet of the filtration element(s); and during back-washing, back-wash water is fed to outside of the hollow fibres through the outlet of the filtration element(s) and, in a first back-wash cycle, back-wash water containing entrained particulate material is discharged from the inside of the hollow fibres from one end thereof; and, in a second back-wash cycle, back-wash water containing entrained particulate material is discharged from the inside of the hollow fibres from the other end thereof; and wherein the first and second back-wash cycles may be performed in either order.

Classes IPC  ?

• B01D 61/14 - Ultrafiltration; Microfiltration
• B01D 61/18 - Appareils à cet effet
• B01D 63/02 - Modules à fibres creuses
• C02F 1/44 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par dialyse, osmose ou osmose inverse
• B01D 65/02 - Nettoyage ou stérilisation de membranes
• B01D 61/22 - Commande ou régulation

Abrégé

A system and method for acquiring and processing seismic data. A method for processing seismic data, includes receiving, by a seismic data processing system, signals representing seismic data recorded at a remote location; receiving, by the seismic data processing system, in conjunction with the signals, identification of a sensor via which the signals were acquired; retrieving, by the seismic data processing system, a sensor transfer function that corresponds to the sensor and relates the motion of the sensor to the signals; generating, by the seismic data processing system, based on the sensor transfer function and a reference transfer function, an inverse filter that when applied to the signals changes parameters of the signals to correspond to the reference transfer function; and applying, by the seismic data processing system, the inverse filter to the signals to conform the parameters of the signals to the reference transfer function.

Classes IPC  ?

• G01V 1/16 - Séismologie; Prospection ou détection sismique ou acoustique Éléments récepteurs de signaux sismiques; Aménagements ou adaptations des éléments récepteurs
• G01V 13/00 - Fabrication, étalonnage, nettoyage ou réparation des instruments ou dispositifs couverts par les groupes

Abrégé

The present invention provides microparticles having an average particle diameter in the range 0.05 to 10 microns and comprising a polymeric network of cross-linked co- polymers, which co-polymers comprise: a) a polymer backbone including structural units derived from a monomer having a CO2-philic functional group, one or more cross-linking structural units derived from a hydrolytically labile cross-linking monomer and one or more cross-linking structural units derived from a non-labile cross-linking monomer; and b) one or more oligomer chains including structural units derived from a monomer having a CO2-philic functional group, which oligomer chains are pendant from the polymer backbone and/or are grafted onto an end group of the polymer backbone. Also provided is a composition comprising said microparticles dispersed in a continuous phase comprising dense carbon dioxide. Such a composition may be injected into a subterranean oil-bearing formation where the microparticles are modified under the conditions of the formation so as to improve oil recovery from the formation..

Classes IPC  ?

• C09K 8/516 - Compositions pour le plâtrage des parois de trous de forage, c. à d. compositions pour la consolidation temporaire des parois des trous de forage caractérisées par leur forme ou par la forme de leurs composants, p.ex. matériaux encapsulés
• C08F 2/16 - Polymérisation en milieu non solvant en milieu aqueux
• C09K 8/588 - Compositions pour les méthodes de récupération assistée pour l'extraction d'hydrocarbures, c. à d. pour améliorer la mobilité de l'huile, p.ex. fluides de déplacement caractérisées par l'utilisation de polymères spécifiques
• C09K 8/594 - Compositions utilisées en combinaison avec du gaz injecté

Abrégé

A method of detecting sand inflow into a wellbore is disclosed. The method can include obtaining a sample data set, detecting a broadband signal within the sample data set, comparing the broadband signal with a signal reference, determining that the broadband signal meets or exceeds the signal reference, and determining the presence of sand inflow into the wellbore based on determining that the broadband signal meets or exceeds the signal reference. The sample data set can be a sample of an acoustic signal originating within a wellbore comprising a fluid, and the broadband signal at least includes a portion of the sample data set at frequencies above 0,5 kHz.

Classes IPC  ?

• E21B 47/10 - Localisation des fuites, intrusions ou mouvements du fluide

Abrégé

A method of detecting an event within a wellbore includes obtaining a sample data set, determining a plurality of frequency domain features of the sample data set, comparing the plurality of frequency domain features with an event signature, determining that the plurality of frequency domain features matches the thresholds, ranges, or both of the event signature, and determining the presence of the event within the wellbore based on determining that the plurality of frequency domain features match the thresholds, ranges, or both of the event signature. The sample data set is a sample of an acoustic signal originating within a wellbore comprising a fluid, and the sample data set is representative of the acoustic signal across a frequency spectrum. The event signature comprises a plurality of thresholds, ranges, or both corresponding to the plurality of frequency domain features.

Classes IPC  ?

• E21B 47/10 - Localisation des fuites, intrusions ou mouvements du fluide

Abrégé

Method for detecting incremental oil production from an oil-bearing reservoir (3) that is penetrated by at least one injection well (10) and at least one production well (1a-d), the process comprising: taking a baseline sample of the oil and analyzing the baseline sample of oil to establish a baseline compositional signature for the oxygen-containing organic compounds in the oil; commencing a low salinity waterflood by injecting a low salinity water into the reservoir from the injection well; recovering oil from the production well; taking post-flood samples of the oil produced from the production well over time; analyzing the post-flood samples of oil to establish post-flood compositional signatures for the oxygen-containing organic compounds in the oil; and identifying a difference between one or more of the post-flood compositional signatures for the oxygen-containing organic compounds in the oil and the baseline compositional signature for the oxygen-containing organic compounds in the oil that is characteristic of incremental oil released by the low salinity waterflood.

Classes IPC  ?

• E21B 43/20 - Déplacement par l'eau
• C09K 8/58 - Compositions pour les méthodes de récupération assistée pour l'extraction d'hydrocarbures, c. à d. pour améliorer la mobilité de l'huile, p.ex. fluides de déplacement

Abrégé

A method comprises: receiving data indicative of outputs of first and second seismic sensors, said outputs including components corresponding to the detection by the first and second seismic sensors of first and second seismic signals, wherein a direction of propagation of the first seismic signal was from the first seismic sensor towards the second seismic sensor, and a direction of propagation of the second seismic signal was from the second seismic sensor towards the first seismic sensor; identifying, relative to a first clock in the first seismic sensor, a first time associated with a time of arrival of the first seismic signal at the first seismic sensor, and a second time associated with a time of arrival of the second seismic signal at the first seismic sensor; identifying, relative to a second clock in the second seismic sensor, a third time associated with a time of arrival of the first seismic signal at the second seismic sensor, and a fourth time associated with a time of arrival of the second seismic signal at the second seismic sensor; and determining an offset of the first clock relative to the second clock using the first, second, third and fourth times.

Classes IPC  ?

• G01V 1/26 - Dispositifs d'émission de signaux de référence, p.ex. indiquant le moment de tirer un coup de mine

Abrégé

A subsurface flow control apparatus comprises: a fluid flow passage configured to engage a packer in a well bore, the fluid flow passage being capable of permitting fluids to flow through the packer, wherein the fluid flow passage comprises a pump intake coupling adapted to couple to an intake of a pump for drawing fluid from the fluid flow passage into said pump intake and out of a pump discharge of the pump; a control valve arranged to control the flow of fluid through the fluid flow passage; and a controller arranged to control the control valve based on the fluid pressure, P2, in the fluid flow passage between the control valve and the pump intake coupling, and based on the fluid pressure, P1, at said pump discharge.

Classes IPC  ?

• E21B 34/08 - Aménagements des vannes pour les trous de forage ou pour les puits dans les puits sensibles à l'écoulement ou à la pression du fluide obtenu
• E21B 34/10 - Aménagements des vannes pour les trous de forage ou pour les puits dans les puits actionnés par un fluide de commande provenant de l'extérieur du trou de forage
• E21B 43/12 - Procédés ou appareils pour commander l'écoulement du fluide extrait vers ou dans les puits

Abrégé

A process for reducing the permeability to water of a thief zone of a subterranean hydrocarbon reservoir, said process comprising injecting an injection fluid down a well and into a thief zone. The injection fluid comprises a dispersion of particles in water, which particles are capable of flocculating at a critical flocculation temperature (CFT) which is at or below the maximum temperature encountered in the thief zone and greater than the maximum temperature encountered in the well, and which particles comprise a carbon allotrope selected from graphene, carbon nanotubes, fullerenes and graphite, having adsorbed at its surface: (a) a non-ionic surfactant, and/or (b) a two-headed surfactant, and (c) optionally an ionic surfactant. The particles flocculate in the thief zone so as to reduce the permeability of the thief zone to water.

Classes IPC  ?

• C09K 8/60 - Compositions pour activer la production en agissant sur la formation souterraine
• E21B 43/25 - Procédés pour activer la production

Abrégé

A method for recovering crude oil from a reservoir that is penetrated by at least one injection well (14) and at least one production well (16) wherein the reservoir comprises one or more first carbonate rock layers (4) and one or more second carbonate rock layers (2, 6) each having crude oil and a resident water present within the pore space thereof, the one or more second carbonate rock layers being adjacent to at least one of the first carbonate rock layers, there being either no barrier or a semipermeable barrier to water at the interface between the second and first carbonate rock layers, the one or more first carbonate rock layers having a relatively high water-soluble sulfate mineral content and the one or more second carbonate rock layers having a relatively low water-soluble sulfate mineral content, the method comprising: isolating the second carbonate rock layers from direct hydraulic communication with the injection well; injecting an injection water having a total dissolved solids (TDS) content lower than the TDS content of the resident water from the injection well into the first carbonate rock layer(s) thereby forming a sulfate enriched aqueous displacement fluid through dissolution of water-soluble sulfate minerals from the first carbonate rock layer(s) into the injection water wherein the sulfate enriched aqueous displacement fluid flows through the first carbonate rock layer(s) and from the first carbonate rock layer(s) into and through the second carbonate rock layer(s) thereby displacing oil towards the production well.

Classes IPC  ?

• E21B 43/20 - Déplacement par l'eau

Abrégé

A seismic survey apparatus comprising a body, a proof mass, at least one sensor arranged to detect movement of the proof mass relative to the body, electronic circuitry connected to the at least one sensor, the electronic circuitry being configured to receive and process an output of the sensor, and a power supply arranged to provide electrical power to the electronic circuitry with the power supply being an integral part of the proof mass.

Classes IPC  ?

• G01V 1/18 - Eléments récepteurs, p.ex. sismomètre, géophone
• G01P 15/09 - Mesure de l'accélération; Mesure de la décélération; Mesure des chocs, c. à d. d'une variation brusque de l'accélération en ayant recours aux forces d'inertie avec conversion en valeurs électriques ou magnétiques au moyen de capteurs piézo-électriques
• G01H 11/08 - Mesure des vibrations mécaniques ou des ondes ultrasonores, sonores ou infrasonores par détection des changements dans les propriétés électriques ou magnétiques par des moyens électriques utilisant des dispositifs piézo-électriques

Abrégé

Cross-linked polymeric microparticles having a volume average particle size diameter of from about 0.05 to about 10 μιη and comprising from about 0.01 to about 5 mol% of one or more hydrolytically labile, crystallisable cross-linking structural units based on the total structural unit content of the polymeric microparticles and wherein the cross-linking structural units are derived from one or more hydrolytically labile, crystallisable cross-linking monomers having a number average molecular weight in the range of from about 1,500 to about 40,000 Daltons and comprise at least one polyester chain having at least five -RC(0)0- ester groups in a linear arrangement wherein the R groups each represent an alkanediyl group or a substituted alkanediyl group and wherein the cross-linking monomers have at least two sites of ethylenic unsaturation. The microparticles also comprise structural units derived from a hydrophilic monomer. When a dispersion of the microparticles in an aqueous fluid is injected into a hydrocarbon-bearing formation, the labile cross-linking structural units hydrolyze thereby releasing free polymer chains that are soluble or dispersible in the aqueous fluid such that a viscosified aqueous solution is generated within the formation,

Classes IPC  ?

• C09K 8/588 - Compositions pour les méthodes de récupération assistée pour l'extraction d'hydrocarbures, c. à d. pour améliorer la mobilité de l'huile, p.ex. fluides de déplacement caractérisées par l'utilisation de polymères spécifiques
• C08F 2/20 - Polymérisation en suspension utilisant des agents de dispersion macromoléculaires

Abrégé

A computer- implemented method and corresponding system for determining the concentration of one or more scale inhibiting polymers in a fluid received from one or more porous and permeable hydrocarbon-bearing rock formations is provided. Each polymer comprises a different chemical marker and the fluid comprises a plurality of commingled said scale inhibiting polymers. The method comprises receiving first input data representing a measured absorption spectrum, within a predetermined wavelength range, of the commingled scale inhibiting polymers, wherein the measured absorption spectrum is measured using a detector after chromatographic separation of the fluid; receiving second input data representing reference absorption spectra, the reference absorption spectra comprising: a) an absorption spectrum, over the predetermined wavelength range, of each of the scale inhibiting polymers; and b) baseline reference absorption spectra of other chemicals having absorbance values within the predetermined wavelength range that are expected to be present in the fluid; inputting the first and second input data into a computer program; and operating the computer program. The computer program is operated to, at each of a plurality of discrete time steps over an elution time for the separation, determine a factor for each reference absorption spectrum that results in a modelled spectrum comprising a best-fit linear combination of the second input data to the first input data. For each scale inhibiting polymer, the computer program also operates to use the factors corresponding to the absorption spectrum of said scale inhibiting polymer that have been determined for a predetermined number of said discrete time steps to determine an indication of the concentration of the scale inhibiting polymer.

Classes IPC  ?

• C09K 8/528 - Compositions pour éviter, limiter ou éliminer les dépôts, p.ex. pour le nettoyage les dépôts inorganiques, p.ex. sulfates ou carbonates
• G01N 21/33 - Couleur; Propriétés spectrales, c. à d. comparaison de l'effet du matériau sur la lumière pour plusieurs longueurs d'ondes ou plusieurs bandes de longueurs d'ondes différentes en recherchant l'effet relatif du matériau pour les longueurs d'ondes caractéristiques d'éléments ou de molécules spécifiques, p.ex. spectrométrie d'absorption atomique en utilisant la lumière ultraviolette

Abrégé

A method for recovering crude oil from a reservoir that is penetrated by at least one injection well, the method comprising: injecting an aqueous displacement fluid comprising a solution of a zinc salt in an aqueous base fluid into the reservoir from the injection well wherein the aqueous base fluid has a total dissolved solids (TDS) concentration in the range of 200 to 250,000 ppmv (parts per million based on the volume of the aqueous base fluid), and a viscosity in the range of 1.00 to 2.00 centipoise (cP) at standard temperature and pressure; and wherein the aqueous displacement fluid has a dissolved zinc concentration in the range of 10 to 3,750 ppmv.

Classes IPC  ?

• C09K 8/58 - Compositions pour les méthodes de récupération assistée pour l'extraction d'hydrocarbures, c. à d. pour améliorer la mobilité de l'huile, p.ex. fluides de déplacement

Abrégé

In accordance with aspects of the present disclosure, a computer-implemented method for predicting a material deterioration state of a pipeline is disclosed. The computer-implemented method can be stored on a tangible and non-transitory computer readable medium and arranged to be executed by one or more processors that cause the one or more processors to receive data related to the pipeline, create a mathematical model of pipeline wall corrosion and use the mathematical model to determine sections of pipeline that should be physically inspected.

Classes IPC  ?

• G06N 7/00 - Agencements informatiques fondés sur des modèles mathématiques spécifiques
• F17D 5/06 - Prévention, interception ou localisation des pertes utilisant des moyens électriques ou acoustiques
• G06N 3/00 - Agencements informatiques fondés sur des modèles biologiques
• F17D 5/02 - Prévention, interception ou localisation des pertes

Abrégé

A monitoring system for monitoring the operation of a relief system is provided. The relief system is connected to one or more sources configured to deliver fluid into the relief system and the sources each comprise one or more source sensors for measuring one or more parameters associated with a respective source. The monitoring system is configured to access data storage arranged to store a first set of one or more sources that have previously been identified as delivering fluid into the relief system. The monitoring system comprises a data receiver arranged to receive substantially real-time measurement data from the source sensors and a processor. The processor is configured to a) determine a second set of sources currently delivering fluid into the relief system based on the received source sensor measurement data, b) access the data storage whereby to determine whether said second set of sources matches the first set of sources, and c) generate a relief system operation assessment based on the determination. A computer-implemented method for monitoring the operation of a relief system is also provided.

Classes IPC  ?

• F23N 5/02 - Systèmes de commande de la combustion utilisant des dispositifs sensibles aux variations thermiques ou à la dilatation thermique d'un agent
• F23N 5/18 - Systèmes de commande de la combustion utilisant des détecteurs sensibles au débit de l'écoulement de l'air ou du combustible
• F23N 5/24 - Systèmes prévenant le développement de conditions anormales ou indésirables, c. à d. dispositifs de sécurité
• F23G 7/08 - Procédés ou appareils, p.ex. incinérateurs, spécialement adaptés à la combustion de déchets particuliers ou de combustibles pauvres, p.ex. des produits chimiques de gaz d'évacuation ou de gaz nocifs, p.ex. de gaz d'échappement utilisant des torchères, p.ex. dans des cheminées

Abrégé

According to the present invention there is provided an apparatus for radiographic inspection of an underwater object comprising: an x-ray source for generating an x-ray beam for directing at an object under inspection; and a power supply, for supplying electrical power to the x-ray source; wherein the x-ray source comprises a circular-path particle accelerator, which circular-path particle accelerator comprises a circular-path particle chamber and an electromagnetic accelerator for accelerating electrons within the chamber, and the power supply comprises at least one solid state capacitor for providing an alternating discharge current to drive the electromagnetic accelerator in the x-ray source. There is also provided a method for the radiographic inspection of an underwater object.

Classes IPC  ?

• G01N 23/04 - Recherche ou analyse des matériaux par l'utilisation de rayonnement [ondes ou particules], p.ex. rayons X ou neutrons, non couvertes par les groupes , ou en transmettant la radiation à travers le matériau et formant des images des matériaux

Abrégé

Multiple sensors in a wellbore can be utilized in a high density sweep analysis. In particular, annular pressures, recorded by the multiple sensors as the sweep is circulated, can be utilized to analyze the performance of a high density sweep. The high density sweep analysis can be used to create a prediction of the impact of circulating a high density sweep. The high density sweep analysis can calculate the position of the high density sweep in the well during the circulation by utilizing the multiple sensors and derive information about the presence of solids in the well, their likely location and whether or not the wellbore is clean prior to tripping out of the well.

Classes IPC  ?

• E21B 47/06 - Mesure de la température ou de la pression
• E21B 47/08 - Mesure du diamètre ou des dimensions correspondantes des trous de forage

Abrégé

Multiple sensors on a drill string can be utilized to perform equivalent circulation density (ECD) analysis. By utilizing multiple ones of the sensors, the pressure drop in each section of the wellbore can be classified. Additionally, the inclusion of multiple sensors in the drill string allows a wellbore to be sectioned into intervals bounded by any two sensors. Pressure events occurring in a single section of the wellbore bounded by any two sensors can be isolated and analyzed. The isolation can be achieved by subtracting the pressure measured on the shallower sensor from that measured on the deeper sensor.

Classes IPC  ?

• E21B 21/08 - Commande ou surveillance de la pression ou de l'écoulement du fluide de forage, p.ex. remplissage automatique des trous de forage, commande automatique de la pression au fond
• E21B 47/06 - Mesure de la température ou de la pression

Abrégé

A method of controlling scale formation in an oil production operation, the method comprising the steps of: (a) introducing a solution or dispersion of a scale inhibiting polymer comprising: (i) a plurality of polymer units including a scale inhibiting moiety, and (ii) at least one polymer unit including a tagging moiety, wherein the tagging moiety can be detected electrochemically, into an oil-bearing formation; (b) producing oil and aqueous fluids from the oil-bearing formation; (c) periodically or continuously measuring the concentration of scale inhibiting polymer in the produced aqueous fluids by electrochemical detection of the tagging moiety of the scale inhibiting polymer; and (d) introducing further scale inhibiting polymer into the oil-bearing formation when the measured concentration of scale inhibiting polymer in step (c) falls below a pre-determined minimum value.

Classes IPC  ?

• C02F 5/14 - Traitement de l'eau avec des produits chimiques complexants ou des agents solubilisants pour l'adoucissement, la prévention ou l'élimination de l'entartrage, p.ex. par addition d'agents séquestrants en utilisant des substances organiques contenant du phosphore
• C02F 5/12 - Traitement de l'eau avec des produits chimiques complexants ou des agents solubilisants pour l'adoucissement, la prévention ou l'élimination de l'entartrage, p.ex. par addition d'agents séquestrants en utilisant des substances organiques contenant de l'azote
• C02F 1/00 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout
• C02F 1/68 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par addition de substances spécifiées, pour améliorer l'eau potable, p.ex. par addition d'oligo-éléments
• C02F 103/10 - Nature de l'eau, des eaux résiduaires ou des eaux ou boues d'égout à traiter provenant de carrières ou d'activités minières

Abrégé

A computer-implemented method for determining an amount of hydrocarbon fluid present in a rock of a hydrocarbon-producing reservoir is provided. The rock comprises organic matter and porous and permeable inorganic matter. The method comprises the steps of receiving data relating to chemical and kinetic properties of the organic matter, rock lithology data, rock thickness and reservoir temperature and pressure data, inputting the received data into a computer-implemented model, and operating the model. The model operates to a) simulate hydrocarbon fluid generation in the rock based on the input data and thereby determine an amount of generated hydrocarbon fluid, b) generate predicted data, and c) determine a total amount of hydrocarbon fluid present in the rock based on the predicted data. The generated predicted data is indicative of i) an amount of the generated hydrocarbon fluid adsorbed onto a surface of the organic matter within the rock, ii) an amount of the generated hydrocarbon fluid present in the pores of the organic matter by determining the porosity of the organic matter, based on the chemical and kinetic properties of the organic matter, and iii) an amount of the generated hydrocarbon fluid present in the pores of the inorganic matter by determining the porosity of the inorganic matter, based on the rock lithology data. A corresponding system, a computer program and a computer readable medium are also provided.

Classes IPC  ?

• G01V 1/50 - Analyse des données
• E21B 49/00 - Test pour déterminer la nature des parois des trous de forage; Essais de couches; Procédés ou appareils pour prélever des échantillons du terrain ou de fluides en provenance des puits, spécialement adaptés au forage du sol ou aux puits

Abrégé

A system for producing hydrocarbons from a subsea wellbore includes a primary conductor extending into the seabed. In addition, the system includes a wellhead disposed at an upper end of the primary conductor. Further, the system includes a multi bore tubing hanger seated in the wellhead. Still further, the system includes a production tree mounted to the wellhead. The production tree includes a spool body and a production spool extending radially from the spool body. The production spool has an end comprising a connector. Moreover, the system includes a rotatable production guide base coupled to the primary conductor and configured to rotate about the wellhead. The production guide base includes a rigid alignment spool. The alignment spool has a first end releasably coupled to the production spool, a second end comprising a second connector, and non-linear deviation positioned between the first end and the second end.

Classes IPC  ?

• E21B 33/038 - Connecteurs utilisés sur les têtes de puits, p.ex. pour relier l'obturateur anti-éruption et la colonne montante dans l'eau
• E21B 33/047 - Têtes de tubage; Suspension des tubages ou des colonnes de production dans les têtes de puits pour colonnes de production multiples

Abrégé

Methods and systems for using survival modeling methods with pipeline inspection data to determine causal factors for corrosion under insulation comprise determining a first corrosion condition of a pipeline joint at a first time; determining a second corrosion condition of the pipeline joint at a second, subsequent time; determining joint attributes, pipeline attributes, and location attributes associated with the pipeline joint; and repeating the process for a plurality of pipeline joints in one or more pipelines. This information is fed into a multiple regression and survival analysis process that determines regression coefficients reflecting the estimated degrees to which various factors contribute to corrosion under insulation. The survival analysis also determines one or more survival models capable of predicting when a given pipeline joint is likely to transition from a first corrosion state to a different second corrosion state, given values for its various attributes.

Classes IPC  ?

• G06Q 10/06 - Ressources, gestion de tâches, des ressources humaines ou de projets; Planification d’entreprise ou d’organisation; Modélisation d’entreprise ou d’organisation

Abrégé

In accordance with aspects of the present disclosure, a computer-implemented method for predicting a material deterioration of a coupon inserted into the well line system is disclosed. The computer-implemented method can be stored on a tangible and non-transitory computer readable medium and arranged to be executed by one or more processors that cause the one or more processors to receive data related to the well line system; determine one or more predictors of material deterioration of a coupon based on the data; and predict a material deterioration of the coupon inserted into the well line system based on a mathematical model of the material deterioration using the one or more predictors.

Classes IPC  ?

• G01N 17/00 - Recherche de la résistance des matériaux aux intempéries, à la corrosion ou à la lumière
• F17D 5/00 - Protection ou surveillance des installations

Abrégé

In accordance with aspects of the present disclosure, techniques for predicting, classifying, preventing, and remedying drilling fluid circulation loss events are disclosed. Tools for gathering relevant data are disclosed, and techniques for interpreting the resultant data as giving rise to an actual or potential drilling fluid lost circulation event are also disclosed.

Classes IPC  ?

• E21B 21/00 - Procédés ou appareils pour nettoyer les trous de forage par jet de fluide, p.ex. en utilisant l'air d'échappement du moteur

Abrégé

A method of recovering oil from a subterranean oil-bearing reservoir uses an injection fluid comprising a viscosifying polymer in a low salinity water. The reservoir is penetrated by one or more injection wells and by one or more production wells. The method comprises injecting the injection fluid into at least one of the injection wells in a slug size in the range of 0.4 to 1.5 pore volumes (PV).

Classes IPC  ?

• C09K 8/58 - Compositions pour les méthodes de récupération assistée pour l'extraction d'hydrocarbures, c. à d. pour améliorer la mobilité de l'huile, p.ex. fluides de déplacement
• E21B 43/16 - Procédés de récupération assistée pour l'extraction d'hydrocarbures
• E21B 43/20 - Déplacement par l'eau

Abrégé

A computer-implemented method and a system are provided for determining the relative positions of a wellbore and an object, the wellbore being represented by a first ellipse and the object being represented by a second ellipse. The first ellipse represents the positional uncertainty of the wellbore and the second ellipse represents the positional uncertainty of the object. The method comprises the steps of: receiving input data relating to a measured or estimated position of the wellbore and the object, the position of the wellbore having a first set of parameters defining the first ellipse, and the position of the object having a second set of parameters defining the second ellipse; calculating an expansion factor representing an amount by which one, or both, of the first ellipse and the second ellipse can be expanded with respect to one or both of respective first and second sets of elliptical parameters so that the first and second ellipses osculate, wherein calculating the expansion factor involves determining and solving a quartic equation that is based on the geometry of the ellipses; and determining, based on the calculated expansion factor, position data indicative of the relative positions of the wellbore and the object.

Classes IPC  ?

• E21B 47/022 - Détermination de l'inclinaison ou de la direction du trou de forage, p.ex. à l'aide de géomagnétisme

Abrégé

Method for estimating the tilt of a layer of a reservoir by measuring the temperature of fluid in a production well at one or more locations (37A, 37B, 37C, 37D, 37E) within the production well at a plurality of points in time. The method comprises: receiving temperature data from the measuring devices, the temperature data being indicative of a temperature of fluid (38, 40) entering the production well; identifying a trend indicative of a change in temperature with time; identifying a velocity of fluid within the layer in a direction of flow of fluid within the layer; using the identified trend and the identified velocity to determine an estimate of the change in temperature by distance for the fluid, the distance being in a direction of flow of fluid within the layer; identifying a geothermal gradient indicative of a change with depth in the temperature of rock within and surrounding the reservoir; and determining a measure of the tilt of a layer in the reservoir based on the estimated change in temperature by distance and the geothermal gradient.

Classes IPC  ?

• E21B 47/026 - Détermination de l'inclinaison ou de la direction dans les couches pénétrées

Abrégé

There is provided a computer-implemented method for estimating flow of fluid into a production well extending into a reservoir comprising fluid, the well comprising a central tubing and an annulus surrounding the central tubing. The annulus is connected to the reservoir so as to receive fluid at one or more inflow locations. The central tubing has at least one inlet, arranged to allow fluid to flow from the annulus into the central tubing, and is located downstream of the one or more inflow locations. The production well further comprises one or more devices arranged to measure a temperature of fluid within the annulus at a plurality of points along the length of the annulus. The method comprises: receiving temperature data from the one or more devices indicative of a temperature of fluid at a plurality of points along the length of the annulus; identifying a change in temperature of fluid flowing within the annulus on the basis of the received temperature data at the plurality of points; using a model to estimate heat transfer from the central tubing to fluid flowing within the annulus, said model being configured such that the heat transfer is assumed to be substantially constant along the length of the tubing; and estimating a rate at which fluid flows into the annulus from the reservoir at a first inflow location on the basis of the identified change in temperature between the points and the estimated heat transfer.

Classes IPC  ?

• G01F 1/688 - Dispositions de structure; Montage des éléments, p.ex. relativement à l'écoulement de fluide utilisant un élément de chauffage, de refroidissement ou de détection d'un type particulier
• G01F 1/74 - Dispositifs pour la mesure du débit d'un matériau fluide ou du débit d'un matériau solide fluent en suspension dans un autre fluide

Abrégé

Computerized method and system for deriving a statistical reservoir model of associations between injecting wells and producing wells. Potential injector events at which injection flow rate changes are interactively identified from time series measurement data of flow rates at the wells in a production field, with confirmation that some response to those injector events appears at producing wells. Gradient analysis is applied to cumulative production time series of the producing wells, to identify points in time at which the gradient of cumulative production changes by more than a threshold value. The identified potential producer events are spread in time and again thresholded. An automated association program rank orders injector-producer associations according to strength of the association. A capacitance-resistivity reservoir model is evaluated, using the flow rate measurement data, for the highest-ranked injector-producer associations. Additional associations are added to subsequent iterations of the reservoir model, until improvement in the uncertainty in the evaluated model parameters is not statistically significant.

Classes IPC  ?

• E21B 43/20 - Déplacement par l'eau

Abrégé

A member is moved within a well bore in a plurality of cycles, each cycle comprising holding the member in slips, releasing the slips, moving the member within the well bore and applying the slips. The hook load is measured at multiple points during each of these cycles and the plurality of measured values are used to identify data indicative of the forces on the member within the well bore.

Classes IPC  ?

• E21B 47/00 - Relevés dans les trous de forage ou dans les puits

Abrégé

The invention relates to the use of a mono-, di- or tri-glyceride of citric acid, or a derivative thereof, as a clathrate hydrate adhesion reducer in a surface coating composition. The mono-, di- or tri glyceride of citric acid is preferably a mono-glyceride in which the fatty acid is a monocarboxylic acid having a branched or unbranched, saturated or unsaturated, aliphatic chain comprising between 12 and 20 carbon atoms, particularly oleic, linoleic, stearic or erucic acid. The surface coating composition can be used to coat at least part of a surface of an assembly for use in hydrocarbon production, transportation, storage or processing.

Classes IPC  ?

• F16L 58/04 - Revêtements caractérisés par les matériaux utilisés
• F17D 1/16 - Amélioration du transfert des liquides ou exécution du transfert de produits visqueux par modification de leur viscosité

Abrégé

The invention provides a pump comprising a pump inlet, a pump outlet, at least two threaded rotors and a pressure controlled valve, the pressure controlled valve being capable of controlling re-circulation of fluid from the pump outlet to the pump inlet. The pressure controlled valve can be a control valve. The invention also provides a multiple stage pump assembly comprising at least two pumps arranged in series, wherein at least one of the pumps is the aforementioned pump.

Classes IPC  ?

• F04C 28/12 - Commande, surveillance ou dispositions de sécurité pour les pompes ou les installations de pompage spécialement adaptées pour les fluides compressibles caractérisées par la modification des positions de l'ouverture de l'admission ou de l'échappement par rapport à la chambre de travail utilisant des tiroirs
• F04C 28/26 - Commande, surveillance ou dispositions de sécurité pour les pompes ou les installations de pompage spécialement adaptées pour les fluides compressibles caractérisées par l'utilisation des soupapes pour commander la pression ou le débit, p.ex. soupapes de décharge utilisant des canaux de dérivation
• F04C 14/02 - Commande, surveillance ou dispositions de sécurité pour "machines" ou pompes ou installations de pompage spécialement adaptées pour plusieurs "machines" ou pompes connectées en série ou en parallèle
• F04C 28/02 - Commande, surveillance ou dispositions de sécurité pour les pompes ou les installations de pompage spécialement adaptées pour les fluides compressibles spécialement adaptées pour plusieurs pompes connectées en série ou en parallèle
• F04C 18/16 - Pompes à piston rotatif spécialement adaptées pour les fluides compressibles du type à engrènement extérieur, c. à d. avec un engagement des organes coopérants semblable à celui d'engrenages dentés d'un autre type qu'à axe interne avec des pistons rotatifs dentés à dents hélicoïdales, p.ex. du type ayant la forme d'un chevron, du type à vis

Abrégé

Methods, apparatuses and computer readable instructions for determining the effectiveness of, and for performing, a low salinity waterflood. An ion diffusion distance value is determined based on the rate of diffusion of ions within the rock of a reservoir and the residency time of floodwater within the reservoir. The thickness of the layers of the reservoir are compared to this ion diffusion value to determine the effectiveness of performing a low salinity waterflood and also to enable the effective control of a waterflood and to assist in the determination of locations of wells.

Classes IPC  ?

• E21B 43/20 - Déplacement par l'eau

Abrégé

A drilling mud comprising a base fluid in the form of a water-in-oil emulsion comprising droplets of a brine phase dispersed in a continuous oil phase wherein the brine phase has a dissolved salt concentration of at least 2.5 weight % and the emulsion is stabilized with (i) a first polymeric emulsifier that is a block or graft copolymer of the general formula (A-COO)mB, wherein m is an integer of at least 2, A is a polymeric component having a molecular weight of at least 500 and is the residue of an oil-soluble complex mono-carboxylic acid and (ii) a second polymeric emulsifier that is a graft copolymer of a polyvinylpyrrolidone polymer and an alpha olefin selected from the group consisting of C14 to C20 alphaolefins and mixtures thereof and wherein structural units derived from vinylpyrrolidone are present in the graft copolymer in an amount in the range of 40 to 60 mole%.

Classes IPC  ?

• C09K 8/36 - Compositions de forage non aqueuses, p.ex. à base d'huile Émulsions eau-dans-l'huile

Abrégé

Sensor and communications systems are disclosed for communicating measurements from subsea equipment, such as at an offshore well, to the surface. A sensor for a physical parameter, such as pressure or temperature at a blowout preventer, capping stack, or conduit in communication with the same, is electrically connected to a subsea acoustic transponder. An acoustic communications device, for example an acoustic transducer and transceiver electronics deployed on a remotely-operated vehicle, interrogates the acoustic transponder with an acoustic signal, in response to which the acoustic transponder transmits an acoustic signal encoded with the measurement. The acquired measurement data are then communicated to a redundant network at the surface. The sensor and acoustic transponder systems can be installed after an event at the subsea equipment, such as blowout of the well.

Classes IPC  ?

• E21B 43/01 - Procédés ou dispositifs pour l'extraction de pétrole, de gaz, d'eau ou de matériaux solubles ou fusibles ou d'une suspension de matières minérales à partir de puits spécialement adaptés à l'extraction à partir d'installations sous l'eau

Abrégé

A subsea pressure relief valve (10) includes a water-filled nozzle (12) fluidly connected to a hydrocarbon distribution manifold (208). A valve body (14) is connected to the distribution manifold, with an outlet (90) of the nozzle coincident with an interior water-filled chamber (44) of the valve body. A first seal element (30) is removably seated against the nozzle outlet and an arm (18) is hinged to the body and configured to apply a force along a seal axis (87) and bias the first seal element into sealing engagement with the nozzle outlet until hydrocarbon pressure exceeds a sealing pressure of the applied force and unseats the first seal element from the nozzle outlet such that excess hydrocarbons exit through an outlet (45) of the valve body. A weight (19a, 19b) is disposed on the arm at a distance from the seal axis.

Classes IPC  ?

• E21B 33/035 - Têtes de puits; Leur mise en place spécialement adaptées aux installations sous l'eau
• E21B 34/04 - Aménagements des vannes pour les trous de forage ou pour les puits dans les têtes de puits dans les têtes de puits situées sous l'eau
• E21B 41/00 - Matériel ou accessoires non couverts par les groupes
• F16K 17/12 - Soupapes ou clapets de sûreté; Soupapes ou clapets d'équilibrage fermant sur insuffisance de pression d'un côté actionnés par poids

Abrégé

A method for capping a subsea wellbore comprises (a) identifying a subsea landing site on the BOP or LMRP for connection of a capping stack. In addition, the method comprises (b) preparing the subsea landing site for connection of the capping stack. Further, the method comprises (c) installing a capping stack on to the subsea landing site. Still further, the method comprises (d) shutting in the wellbore with the capping stack after (c).

Classes IPC  ?

• E21B 33/038 - Connecteurs utilisés sur les têtes de puits, p.ex. pour relier l'obturateur anti-éruption et la colonne montante dans l'eau
• E21B 33/064 - Obturateurs anti-éruption spécialement adaptés aux têtes de puits sous l'eau

Abrégé

A system for flare burning of a combustible gas comprising a plurality (30,31,32,33) of sonic flare stacks arranged at a site, each sonic flare stack comprising a sonic flare tip (3, 5), wherein the sonic flare tips are angled inwardly and upwardly such that, during flare burning, flames (17, 18) from the sonic tips intersect.

Classes IPC  ?

• F23G 7/08 - Procédés ou appareils, p.ex. incinérateurs, spécialement adaptés à la combustion de déchets particuliers ou de combustibles pauvres, p.ex. des produits chimiques de gaz d'évacuation ou de gaz nocifs, p.ex. de gaz d'échappement utilisant des torchères, p.ex. dans des cheminées
• E21B 41/00 - Matériel ou accessoires non couverts par les groupes

Abrégé

A method of strengthening subterranean formation by drilling and completing a wellbore penetrating at least one unconsolidated or weakly consolidated formation, the method comprising: (a) drilling at least one interval of the wellbore that penetrates the unconsolidated or weakly consolidated formation using a drilling mud comprising a base fluid comprising an aqueous phase containing up to 25% weight by volume (%w/v) of a water soluble silicate, wherein the drilling mud has an acid-soluble particulate bridging solid suspended therein that is formed from a salt of a multivalent cation, wherein the salt of the multivalent cation is capable of providing dissolved multivalent cations when in the presence of an acid; (b) subsequently introducing a breaker fluid containing an acid and/or an acid precursor into the wellbore; (c) allowing the breaker fluid to soak in the interval that penetrates the unconsolidated or weakly consolidated formation for a predetermined period and strengthening formation by reacting with silicate now present in formation; and (d) removing the breaker fluid.

Classes IPC  ?

• C09K 8/04 - Compositions aqueuses pour le forage des puits
• C09K 8/26 - Compositions aqueuses pour le forage des puits Émulsions huile-dans-l'eau
• C09K 8/57 - Compositions à base d'eau ou de solvants polaires

Abrégé

A free-standing riser system connects a subsea source to a surface structure. The system includes a concentric free-standing riser comprising inner and outer risers defining an annulus there between. A lower end of the riser is fiuidly coupled to the subsea source through a lower riser assembly (LRA) and one or more subsea flexible conduits. An upper end of the riser is connected to a buoyancy assembly and the surface structure through an upper riser assembly (URA) and one or more upper flexible conduits, the riser also mechanically connected to a buoyancy assembly that applies upward tension to the riser. The riser may be insulated for flow assurance, either by a flow assurance fluid in the annulus, insulation of the outside of the outer riser, or both. The system may include a hydrate inhibition system and/or a subsea dispersant system. The surface structure may be dynamically positioned.

Classes IPC  ?

• E21B 33/038 - Connecteurs utilisés sur les têtes de puits, p.ex. pour relier l'obturateur anti-éruption et la colonne montante dans l'eau
• E21B 36/00 - Aménagements pour le chauffage, le refroidissement, l'isolation, dans les trous de forage ou dans les puits, p.ex. pour être utilisés dans les zones de permagel
• E21B 43/013 - Raccordement d'une colonne de production à une tête de puits sous l'eau
• E02D 27/04 - Fondations superficielles dans l'eau ou sur sables mouvants
• E21B 17/01 - Colonnes montantes pour têtes de puits immergées

Abrégé

A system for autonomously supplying a chemical dispersant to a subsea hydrocarbon discharge site which comprises a subsea storage vessel configured to store the chemical dispersant subsea is described herein. The storage vessel includes a dispersant outlet in fluid communication with the subsea hydrocarbon discharge site.

Classes IPC  ?

• E21B 43/01 - Procédés ou dispositifs pour l'extraction de pétrole, de gaz, d'eau ou de matériaux solubles ou fusibles ou d'une suspension de matières minérales à partir de puits spécialement adaptés à l'extraction à partir d'installations sous l'eau
• B65D 88/78 - Grands réceptacles pour utilisation dans ou sous l'eau

Abrégé

An apparatus for sampling well production fluids comprises a vessel having an inner chamber. In addition, the apparatus comprises a hydrocarbon fluids outlet conduit in fluid communication with the inner chamber. Further, the apparatus comprises a well fluids inlet conduit coaxially disposed within the hydrocarbon fluids outlet conduit and in fluid communication with the inner chamber. The well fluids inlet conduit has a first portion extending from the vessel and a second portion extending into the inner chamber. The second portion of the well fluids inlet conduit includes a plurality of openings configured to direct the well production fluids radially outward from the well fluids inlet conduit. Still further, the apparatus comprises a sample fluids outlet in fluid communication with the inner chamber.

Classes IPC  ?

• B01D 17/02 - Séparation de liquides non miscibles
• E21B 49/08 - Prélèvement d'échantillons de fluides ou test des fluides dans les trous de forage ou dans les puits
• G01N 1/10 - Dispositifs pour prélever des échantillons à l'état liquide ou fluide
• G01N 33/18 - Eau
• G01N 33/24 - Matériaux de la terre
• E21B 43/34 - Aménagements pour séparer les matériaux produits par le puits

Abrégé

The invention relates to an apparatus for simultaneously injecting fluids into a plurality of samples of porous media, comprising: a plurality of holders for the samples of porous media, each holder comprising a sleeve and first and second platens, the first platen having an inlet for an injection fluid and the second platen having an outlet for a produced fluid, and the samples of porous media being arranged, in use, in each of the holders such that the first platen and second platen of each holder contact a first and second end of the sample of porous medium respectively, the inlet of each first platen being in fluid communication with an injection line for injecting fluid into the sample of porous medium arranged in the holder, the outlet of each second platen being in fluid communication with a dedicated effluent line for removing fluid produced from the sample of porous medium arranged in the holder, on-line and/or off-line analytic.al means for analyzing the fluids injected into each of the samples of porous media, on-line and/or off-line means for analyzing the fluids removed from each of the samples of porous media. A method of simultaneously injecting injection fluid into the samples of porous media is also provided.

Classes IPC  ?

• E21B 43/20 - Déplacement par l'eau
• G01N 33/24 - Matériaux de la terre
• G01N 15/08 - Recherche de la perméabilité, du volume des pores ou de l'aire superficielle des matériaux poreux

Abrégé

A control line protector for use with a tubing string, e.g. production tubing having at least one control line on an outer surface thereof is disclosed. The control line protector comprises a sleeve having a cylindrical rigid outer wall, the sleeve being locatable around the tubing string and the at least one control line, and a polymeric sealing element disposed, in use, between an inner surface of the outer wall of the sleeve and the tubing string, operable to substantially seal the space between the outer wall of the sleeve and the tubing string.

Classes IPC  ?

• E21B 17/10 - Protecteurs contre l'usure; Dispositifs de centrage

Abrégé

A method for detecting the presence of an acid gas in a formation fluid from a subterranean formation comprises (a) lowering a coring assembly (100) into a wellbore (12). The coring assembly including an outer core barrel (110) and an inner core barrel (150) disposed within the outer core barrel. The inner core barrel has an upper end (110a), a lower end (110b) opposite the upper end, and a core sample chamber extending axially from the lower end. In addition, the method comprises (b) capturing a core sample (195) from the subterranean formation within the sample chamber. Further, the method comprises (c) raising the coring assembly to the surface after (b). Still further the method comprises (d) contacting a formation fluid in the sample chamber with at least one detector (200) during (c). Moreover, the method comprises (e) detecting the presence of a formation acid gas in the formation fluid with the at least one detector during (c).

Classes IPC  ?

• E21B 25/00 - Appareils pour recueillir ou retirer des carottes intactes, p.ex. tubes carottiers, extracteurs de carottes
• E21B 47/01 - Dispositifs pour supporter des instruments de mesure sur des trépans, des tubes, des tiges ou des câbles de forage; Protection des instruments de mesure dans les trous de forage contre la chaleur, les chocs, la pression ou similaire
• E21B 47/10 - Localisation des fuites, intrusions ou mouvements du fluide

Abrégé

A method for predicting the effect of microbes injected into an oil-bearing reservoir, the oil-bearing reservoir being capable of being represented by a first computer-generated grid comprising a first plurality of grid blocks, is provided. Measurement data representing the effect of injecting the microbes into a multiple coreflood apparatus is received. The multiple coreflood apparatus comprises at least first and second material samples indicative of a rock formation associated with said oil-bearing reservoir, the first and second samples being capable of being represented by a second computer-generated grid comprising a second plurality of grid blocks, the first and second samples being representative of different regions of the reservoir and being connected such that microbes injected into the first sample are able to flow to the second sample. Selected data of the received measurement data is input into a computer-implemented reservoir model configured to simulate said effect of microbe injection in relation to the second grid. The reservoir model is executed to generate reservoir model data indicative of the effect of injecting the microbes into the multiple coreflood apparatus. Parameters of the reservoir model are adjusted by matching the reservoir model data against the measurement data, in order to calibrate the reservoir model. The calibrated reservoir model is then executed for the first grid to predict the effect of injecting the microbes into the reservoir. A corresponding system, and a method and apparatus for generating data indicative of the effect of injecting microbes into an oil-bearing reservoir, are also provided.

Classes IPC  ?

• E21B 43/16 - Procédés de récupération assistée pour l'extraction d'hydrocarbures
• E21B 49/00 - Test pour déterminer la nature des parois des trous de forage; Essais de couches; Procédés ou appareils pour prélever des échantillons du terrain ou de fluides en provenance des puits, spécialement adaptés au forage du sol ou aux puits
• C09K 8/582 - Compositions pour les méthodes de récupération assistée pour l'extraction d'hydrocarbures, c. à d. pour améliorer la mobilité de l'huile, p.ex. fluides de déplacement caractérisées par l'utilisation de bactéries

Abrégé

A marine seismic source comprises a housing (201) having a central axis (205), an open end (201a), and a closed end opposite the open end (201b). In addition, the seismic source includes a piston (210) extending coaxially through the open end of the housing. The piston is adapted to axially reciprocate relative to the housing. Further, the piston has a first end (210a) distal the housing and a second end (210b) disposed within the housing.

Classes IPC  ?

• G01V 1/155 - Production d'énergie sismique en utilisant des moyens d'entraînement mécaniques utilisant des masses en mouvement alternatif

Abrégé

A process of producing an injection water stream of controlled salinity and controlled sulfate anion content that is suitable for injection into an oil bearing formation of an oil reservoir, the process comprising the steps of: (a) feeding a source water having a total dissolved solids content in the range of 20,000 to 45,000 ppm and a sulfate anion concentration in the range of 1,000 to 4,000 ppm, preferably, 1,500 ppm to 4,000 ppm to a desalination plant that comprises a plurality of reverse osmosis (RO) membrane units and a plurality of nanofiltration (NF) membrane units wherein the source water is pressurised to a pressure in the range of 350 to 1250 psi absolute, and dividing the source water to provide a feed water for the RO membrane units (hereinafter "RO feed water") and a feed water for the NF membrane units (hereinafter "NF feed water"); (b) if necessary, increasing the pressure of the RO feed water to a value in the range of 900 to 1250 psi absolute before introducing the RO feed water to the RO membrane units and withdrawing an RO permeate and an RO retentate from the RO membrane units wherein the RO membrane units are operated in either a single-pass, single-stage mode or in a single-pass, two-stage mode and wherein the recovery of RO permeate is in the range of (35) to 75% by volume, preferably, 35 to 60% by volume based on the volume of the RO feed water that is fed to the RO membrane units such that the RO permeate has a total dissolved solids contents of less than 250 ppm, and a sulfate anion concentration of less than 3 ppm; (c) if necessary, reducing the pressure of the NF feed water to a value in the range of 350 to 450 psi absolute before introducing the NF feed water to the NF membrane units and withdrawing an NF permeate and an NF retentate from the NF membrane units wherein the NF membrane units are operated in a single-pass, single-stage mode and wherein the NF membrane units are operated with a recovery of NF permeate in the range of 35 to 60% by volume based on the volume of the NF feed water that is fed to the NF membrane units such that the NF permeate has a total dissolved solids content in the range of 15,000 to 40,000 ppm, preferably, 15,000 to 35,000 ppm, and a sulfate anion concentration of less than 40 ppm, preferably less than 30 ppm; and (d) mixing at least a portion of the RO permeate and at least a portion of the NF permeate in a ratio in the range of 2: 1 to 40: 1, preferably, 4: 1 to 27:1, in particular, 10: 1 to 25: 1 to provide an injection water having a total dissolved solids content in the range of 500 to 5,000 ppm, and a sulfate anion concentration of less than 7.5 ppm, preferably, less than (5) ppm, more preferably less than 3 ppm.

Classes IPC  ?

• C02F 1/44 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par dialyse, osmose ou osmose inverse
• B01D 63/12 - Modules à membranes enroulées en spirale comprenant plusieurs ensembles enroulés en spirale
• B01D 61/02 - Osmose inverse; Hyperfiltration

Abrégé

A method of comparing a secondary oil recovery process with a tertiary oil recovery process, the secondary oil recovery process and the tertiary oil recovery process being applied to a substantially fluid- saturated porous medium containing an oil phase and an aqueous phase, the method comprising using relaxation time measurements in the calculation of a wettability index modification factor for the oil phase or the aqueous phase, thereby comparing the tertiary oil recovery process with the secondary oil recovery process.

Classes IPC  ?

• G01V 3/32 - Prospection ou détection électrique ou magnétique; Mesure des caractéristiques du champ magnétique de la terre, p.ex. de la déclinaison ou de la déviation spécialement adaptée au carottage fonctionnant par résonance magnétique électronique ou nucléaire

Abrégé

Automated monitoring and management of well tests of hydrocarbon wells in a production field. Routing of the output of a well to a flow meter, separated from the output from other wells in the field is detected by a computer system such as a server (8). Measurement data including the flow as measured by the flow meter, and also other measurements such as temperatures and pressures contemporaneous with the flow meter measurements, are acquired by the computer system; a stable period is identified, over which the flow test measurement data are considered valid. Upon completion of a specified duration or upon a change in the flow environment, the computer system notifies the user of the completion of the flow test. The flow test results can be used to modify predictive well models, with the modification dependent on validation by the user. The system can also plan and schedule future flow tests.

Classes IPC  ?

• E21B 49/00 - Test pour déterminer la nature des parois des trous de forage; Essais de couches; Procédés ou appareils pour prélever des échantillons du terrain ou de fluides en provenance des puits, spécialement adaptés au forage du sol ou aux puits

Abrégé

A method and system for estimating reservoir pressure in a hydrocarbon reservoir from downhole pressure measurements of producing wells is disclosed. Pressure measurements are obtained from wells in the production field over time, and communicated to a server that applies the pressure measurements for a well to a model of that well. The server operates the model using the pressure measurements to determine an operating mode of the well. Upon detection of a change in operating mode indicative of an abrupt change in flow at the well, such as corresponding to a shut-in event, additional downhole pressure measurement data is acquired until a steady-state condition is reached. The pressure measurements are used to determine a reservoir pressure, which is transmitted to a responsible reservoir engineer or other user. Modification of the determined reservoir pressure value by the user can be received, and the stored reservoir pressure and well model are updated accordingly.

Classes IPC  ?

• E21B 43/12 - Procédés ou appareils pour commander l'écoulement du fluide extrait vers ou dans les puits
• E21B 49/00 - Test pour déterminer la nature des parois des trous de forage; Essais de couches; Procédés ou appareils pour prélever des échantillons du terrain ou de fluides en provenance des puits, spécialement adaptés au forage du sol ou aux puits

Abrégé

A gravel pack composition comprising i) a water-in-oil emulsion comprising: a) an organic continuous phase comprising 0.1 to 5 vol% of the emulsion of non-ionic or cationic surfactant and 0.25 to 3 vol% of the emulsion of sorbitan ester; b) a dispersed aqueous phase comprising 0.05 to 3 vol% of the emulsion of a partial ester of a polyol with at least one C6 to C22 fatty acid and at least one of an acid, acid precursor, and a chelating agent; and c) a density control agent; and ii) gravel. The fluid can display a delayed break of up to about 72 hours to enable clean-up of mud cake.

Classes IPC  ?

• E21B 43/04 - Réalisation de filtres à graviers
• C09K 8/50 - Compositions pour le plâtrage des parois de trous de forage, c. à d. compositions pour la consolidation temporaire des parois des trous de forage

Abrégé

A method of disintegrating, removing or reducing a blockage in a flowline using a remotely controlled tool, wherein there is a fluid in situ within the flowline adjacent or in the vicinity of the blockage and wherein the remotely controlled tool comprises a fluid intake means in fluid communication with a jet formation means, the method comprising: actuating the fluid intake means to draw at least a portion of the in situ fluid into the tool; and actuating the jet formation means to expel one or more jets comprising the fluid from the tool such that the or each jet is incident upon the blockage.

Classes IPC  ?

• B08B 9/049 - Nettoyage de conduites ou de tubes ou des systèmes de conduites ou de tubes Élimination des bouchons utilisant des dispositifs de nettoyage introduits dans et déplacés le long des tubes les dispositifs de nettoyage comportant des moyens autopropulseurs pour se déplacer dans les tubes
• F16L 55/28 - Caractéristiques de structure