Apparatus for Fitting to a Wellbore, Downhole Tool, Lubricator for Fitting to a Wellhead and Method of Transferring Power There is provided an apparatus 300 for fitting to a wellbore 12. The apparatus 300 comprises a battery-powered downhole tool 304 for deployment within the wellbore 12. The downhole tool 304 comprises a battery 332 for providing electrical power to one or more components 334 of the downhole tool 304. The apparatus 300 further comprises a lubricator 302 for fitting to a wellhead of the wellbore 12 via a valve system providing communication between the lubricator 302 and the wellbore 12, and for housing the downhole tool 304 when in a stowed position. The lubricator 302 comprises a transmitter for receiving electrical power from a remote power source, and for transferring received electrical power to a receiver. The downhole tool 304 comprises a receiver for providing electrical power to the battery 332, and for receiving electrical power from the transmitter. A method of transferring power from a transmitter of a lubricator 302 to a receiver of a downhole tool 304 is also provided.
A system and method of monitoring a tubular structure is provided. The method includes: a) sensing one or more parameters relating to the tubular structure at spaced apart positions along the length of the tubular structure using a sensor module array having a plurality of sensor modules disposed in a cable attached to the tubular structure, the plurality of sensor modules producing communication signals representative of the sensed parameter at each position along the length of the tubular structure; and b) using a control unit to communicate with the sensor modules in the array, including receiving communication signals representative of the sensed parameter at each position along the length of the tubular structure, and processing the communications signals to produce information relating to the sensed parameter at the positions along the length of the tubular structure.
A control system automatically operates a subsea well control device on detecting that a load in an Intervention Riser System (IRS) coupled to the subsea well control device has reached a threshold below a failure load of the IRS. The control system has a first control unit to detect that the load in the IRS has reached the threshold and a second control unit triggering actuation of the subsea well control device to cause it to move from a deactivated state to an activated state in which the subsea well control device provides a well control function. The first control unit is connected to and/or in communication with the second control unit and issues an activation command to the second control unit to cause it to trigger actuation of the subsea well control device. The first control unit is automatically issues the activation command to the second control unit upon detecting that the load in the IRS has reached the threshold, to trigger actuation of the subsea well control device prior to structural failure of an IRS or a component thereof occurring.
A separator for separating constituents of well fluid produced by a well is provided. The separator comprises: a vessel for receiving well fluid such that a first fluid constituent overlies a second fluid constituent within the vessel; a collection pipe having an opening for collecting a first fluid constituent from the vessel; and a positioner connected to the collection pipe for rotating the collection pipe about an axis to adjust a height of the opening within well fluid in the vessel. A method and system are also provided.
A control system for automatically operating a well control device located in a subsea blow-out preventer (BOP), has a first control unit configured to detect a signal indicative of a requirement to trigger actuation of a shear mechanism of the subsea BOP, to cause the shear mechanism to move from a deactivated state to an activated state in which it provides a well control function. A second control unit is adapted to be connected to the well control device, for triggering actuation of the well control device to cause it to move from a deactivated state to an activated state in which the well control device provides a well control function. The first control unit is connected to the second control unit and issues an activation command to the second control unit to cause it to trigger actuation of the well control device. The first control unit is configured to automatically issue the activation command to the second control unit on detecting issue of the signal indicative of a requirement to trigger actuation of the subsea BOP shear mechanism. The first control unit and the second control unit are configured so that the activation command is issued to the second control unit to trigger actuation of the well control device prior to actuation of the subsea BOP shear mechanism.
A well bore fluid sensor is provided that includes an inner plate, a plurality of outer plates, first and second cable fixtures, and an electronics module. The inner plate defines a sensor interior cavity. The outer plates include a first outer plate and a second outer plate. The electronics module includes a resonant circuit and a power supply and is in signal communication with the inner plate and at least one of the first and second cable fixtures. The inner plate, the first and second outer plates, and the first and second cable fixtures are coupled together to form a unitary structure. The inner plate is electrically insulated from the first and second outer plates, the first and second cable fixtures. The first and second outer plates are electrically insulated from one another. The inner plate is capacitively coupled to the first and second outer plates.
G01V 3/26 - 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 au moyen de champs magnétiques ou électriques produits ou modifiés par la formation terrestre environnante ou par les dispositifs de détection
E21B 49/08 - Prélèvement d'échantillons de fluides ou test des fluides dans les trous de forage ou dans les puits
G01N 27/08 - Recherche ou analyse des matériaux par l'emploi de moyens électriques, électrochimiques ou magnétiques en recherchant l'impédance en recherchant la résistance d'un liquide qui coule sans interruption
7.
METHOD AND APPARATUS FOR TRANSMITTING AN ELECTRICAL SIGNAL
A method of transmitting an electrical signal between a downhole device and a surface location, the method comprising: unwinding a flexible hose from a reel at the surface location and deploying the hose down a wellbore, wherein the downhole device is attached at a downhole end of the flexible hose; providing a conductive fluid inside the flexible hose as an electrical path; and transmitting the electrical signal through the conductive fluid from one of the downhole device and the surface location to the other of the downhole device and the surface location.
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
8.
SYSTEM FOR REMOVING SOLIDS FROM A SEPARATOR AND METHOD THEREFOR
A system for removing sedimentary solids from a separator is provided. The separator is for separating components of well fluid produced by a well. The system comprises an inlet for receiving motive fluid; a nozzle configured to introduce the motive fluid to the sedimentary solids in the separator, thereby fluidizing the sedimentary solids; and an outlet configured to allow the fluidized solids to exit the separator. The motive fluid comprises well fluid produced from the well. A separator, method for removing sedimentary solids from a separator, and method of removing solids from well fluid produced by a well are also provided.
A controller for use with a remote downhole tool is provided. The controller comprises a processor and a transmitter for transmission of control signals to the remote downhole tool. The controller is configured for use at surface or uphole of the remote downhole tool to control transmission of data from the remote downhole tool. The controller is configured to transmit a control signal to the remote downhole tool to configure the remote downhole tool for transmission of data from the remote downhole tool according to a schedule or on demand. A communication system for use in a downhole environment is also provided. Methods of managing data transmission of a remote downhole tool are also provided.
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
An apparatus for fitting to a wellbore, the apparatus comprising: a self-propelled downhole tool for deployment within the wellbore, and configured to propel itself along at least part of a length of the wellbore; and a lubricator for fitting to a wellhead of the wellbore via a valve system providing communication between the lubricator and the wellbore, and for housing the self-propelled downhole tool when in a stowed position, wherein the lubricator comprises an input port for receiving data from a remote unit, the input port being in electrical communication with the self-propelled downhole tool when in the stowed position, and wherein the received data comprises instructions for operating the self-propelled downhole tool, and associated self-propelled downhole tool, lubricator and method.
E21B 23/00 - Appareils pour déplacer, mettre en place, verrouiller, libérer ou retirer, les outils, les packers ou autres éléments dans les trous de forage
E21B 33/068 - Têtes de puits; Leur mise en place comportant des dispositions pour introduire des objets dans les puits ou pour les en retirer, ou pour y introduire des fluides
11.
WIRELESS COMMUNICATIONS WITH DOWNHOLE DEVICES USING COIL HOSE
An apparatus for providing communication with a downhole device positioned within a wellbore is provided. The apparatus comprises a flexible hose configured to be run into the wellbore during a well intervention process and to provide a fluid communication path from surface into the wellbore. The flexible hose comprises at least one communication medium forming at least part of an outer wall thereof. The apparatus further comprises a downhole device for positioning within the wellbore and coupled to the communication medium for transference of a signal between the downhole device and the communication medium; and a surface communication unit for communicating data to the downhole device and/or receiving data from the downhole device, wherein the surface communication unit is coupled to the communication medium for transference of a signal between the surface communication unit and the communication medium.
E21B 7/00 - Procédés ou matériels particuliers pour le forage
E21B 17/20 - Tubes de forage flexibles ou articulés
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
12.
TUBING ASSEMBLY FOR USE IN WELLBORE AND METHOD OF RUNNING TUBING IN A WELLBORE
A tubing assembly for use in a wellbore is provided. The tubing assembly comprises: tubing configured to be run in a wellbore to recover downhole fluid from a formation; and at least one gauge positioned at least partially inside the tubing. The gauge is configured to detect a parameter inside the tubing.
E21B 47/017 - Protection des instruments de mesure
E21B 47/06 - Mesure de la température ou de la pression
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
13.
APPARATUS FOR USE IN A DOWNHOLE TOOL AND METHOD OF OPERATING SAME
An apparatus for use in a downhole tool is provided. The apparatus comprises a membrane configured to isolate an internal environment of the downhole tool from one or more further environments, internal and/or external to the downhole tool; and an electrical element configured to conduct an electrical current. The electrical element is positioned with respect to the membrane such that energy generated by the electrical current passing through the electrical element is incident on the membrane. The membrane is configured to be weakened and/or ruptured when the energy is incident thereon to allow fluid communication between the internal environment and the further environment.
A valve assembly (100) is disclosed, for controlling fluid communication along a well tubular (10). The valve assembly comprises: a hydraulically operated valve (40, 42) comprising a valve member (41, 43) which is movable between open and closed positions, and a hydraulic actuator (148) associated with the valve member for moving the valve member between these positions; a control system (146) for selectively controlling the flow of hydraulic fluid to and from the actuator, to operate the valve; a vent chamber (84) operatively connectable to the actuator, for selectively receiving hydraulic fluid exhausted from the actuator when the valve member is moved to its closed position; and a vent conduit (172) operatively connectable to the actuator, for selectively receiving hydraulic fluid exhausted from the actuator when the valve member is moved to its closed position, the vent conduit being exposed to fluid external to the valve assembly at the prevailing external pressure. The control system has a first valve closing state in which the vent chamber is isolated from the actuator and fluid exhausted from the actuator during movement of the valve member to its closed position is vented to an exterior of the valve assembly through the vent conduit. The control system has a second valve closing state in which fluid exhausted from the actuator during movement of the valve member to its closed position is vented into the vent chamber. The control system is configurable in a selected one of the first and second valve closing states according to an operating requirement of the valve. A control assembly for a valve, and a method of operating the valve assembly, are also disclosed.
A downhole electrical power generation device is provided. The device comprises at least one magnetic element; an electrically conductive element; and a member configured to be positioned within downhole fluid and to vibrate when the downhole fluid flows across a surface of the member. One of the magnetic element and electrically conductive element is positioned on the member. The other of the magnetic element and electrically conductive element is configured to be positioned such that the electrically conductive element is located in a magnetic field produced by the at least one magnetic element to generate electrical power on vibration of the member. A method of generating electrical power downhole is further provided. The method comprises: positioning one of at least one magnetic element and an electrically conductive element on a member of a downhole power generation device; positioning the other of the magnetic element and electrically conductive element such that the electrically conductive element is located in a magnetic field produced by the at least one magnetic element; positioning the member in a flow of downhole fluid the member vibrating when the downhole fluid flows across a surface of the member; and generating electrical power in the electrically conductive element on vibration of the member in fluid flow.
Valve assemblies are disclosed which may have a use in the oil and gas exploration and production industry. One disclosed valve assembly (24a) comprises: a housing (40a) having a bore (41a); a valve member (44a) arranged within the housing which is movable relative to the bore between an open position (Fig. 3) in which communication along the bore is permitted, and a closed position (Fig. 4) in which communication is restricted, the valve member comprising a cutting feature (56a) and a sealing surface (80); a cutting component (42a) arranged within the housing which cooperates with the cutting feature when the valve member is moved to the closed position; a first seal element (84) arranged within the housing and providing a first seal relative to the sealing surface, to seal the valve member relative to the housing; and a second seal element (88) arranged within the housing and providing a second seal relative to the sealing surface, to seal the valve member relative to the housing. The second seal element is movable relative to the housing bore between a first position (Fig. 3) in which it is out of sealing contact with the sealing surface and a second position (Fig. 5) in which it is in sealing contact with the sealing surface. A corresponding method of controlling communication along a bore of a housing is also disclosed.
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
17.
TOOL FOR USE IN WELL TUBING AND METHOD OF USING SAME
A tool for use in well tubing is provided. The tool substantially spans a diameter of well tubing. Alternatively or in addition the tool extends longitudinally in well tubing and has radially adjacent batteries. A method of using the tool in well tubing is further provided. The method comprises transferring a signal from the tool to another tool.
E21B 47/00 - Relevés dans les trous de forage ou dans les puits
E21B 47/125 - 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 utilisant la terre comme conducteur électrique
E21B 47/13 - 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
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 47/06 - Mesure de la température ou de la pression
18.
APPARATUS AND METHOD FOR CONTACTING AN OPEN HOLE SURFACE
An apparatus and method for contacting an open hole surface are provided. The apparatus comprises an expandable portion surrounded by a contact portion configured to contact an open hole surface. The method comprises expanding an expandable portion surrounded by a contact portion to create contact between the contact portion and an open hole surface.
E21B 47/125 - 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 utilisant la terre comme conducteur électrique
A well bore instrument system is disclosed. The well bore instrument systems includes a cable for conveying control signals and data signals; sensors positioned along the cable; and a controller operable to send control signals to the sensors and receive sensor data signals from the sensors via the cable. The controller is configured to transmit the control signals to the sensors at a control signal bit rate, wherein a sensor of the sensors is configured to receive the control signals and transmit sensor data signals to the controller at a sensor data bit rate, and wherein the sensor data bit rate is greater than the control signal bit rate.
E21B 47/06 - Mesure de la température ou de la pression
E21B 47/13 - 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
20.
SUBSURFACE SAFETY VALVE AND METHOD OF OPERATING A SUBSURFACE SAFETY VALVE
A subsurface safety valve is provided. The subsurface safety valve comprises an assembly configured to convert rotary motion from an electrically controlled drive into linear motion of a member, the member configured to actuate a valve.
A hydraulic protection system (46) for preventing collapse of a hydraulic line (38). The system comprises a pressure sensing assembly (50) which is arranged to monitor a pressure differential between fluid external to the hydraulic line and fluid contained within the hydraulic line; and a pressure compensation assembly (52) which is adapted to be coupled to the hydraulic line and which is exposed to the fluid external to the hydraulic line. The pressure compensation assembly (52) is operable to employ the pressure of the fluid external to the hydraulic line to increase the pressure of the fluid contained within the hydraulic line and thereby compensate for the loss. The system is arranged so that the pressure compensation assembly (52) is operated when the pressure differential monitored by the pressure sensing assembly (50) reaches a predetermined level, which is below a collapse pressure of the hydraulic line.
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
E21B 21/10 - Aménagements des vannes dans les systèmes de circulation des fluides de forage
F16K 17/06 - Soupapes ou clapets de sûreté; Soupapes ou clapets d'équilibrage fermant sur insuffisance de pression d'un côté actionnés par ressort avec dispositions particulières pour régler la pression d'ouverture
22.
POWER AND TELEMETRY SYSTEMS FOR A DOWNHOLE INSTRUMENT
A downhole instrument system for permitting continued operation a downhole instrument after one or more failure modes is provided. The downhole instrument system comprises: an electrical power supply in electrical communication with the downhole instrument via an electrical power connection comprising one or more lengths of electrical cable and one or more electrical cable terminations; a load monitor configured to monitor a load on the electrical power supply, wherein the monitored load is dependent on one or more failure modes related to the electrical power connection; and a power controller configured to control the electrical power supplied to the downhole instrument based on the monitored load.
E21B 43/12 - Procédés ou appareils pour commander l'écoulement du fluide extrait vers ou dans les puits
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
In described examples, there are methods and systems for communicating data signals in wells. The methods and systems may facilitate communication of data signals, for example, from an open-hole section of a well, or in a well having a discontinuous metallic well structure.
E21B 23/06 - Appareils pour déplacer, mettre en place, verrouiller, libérer ou retirer, les outils, les packers ou autres éléments dans les trous de forage pour le montage des packers
E21B 47/13 - 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
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 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 47/14 - 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 utilisant des ondes acoustiques
A transmitter for use in downhole telemetry and/or control is provided. The transmitter comprises a mixer; modulator; and signal generation apparatus configured to generate a frequency modulated signal. The mixer is configured to generate an output signal based on the frequency modulated signal. A frequency spectrum of the output signal comprises upper and lower sidebands disposed about a suppressed or reduced frequency of the frequency modulated signal. The modulator is operable to modulate an input signal onto the output signal. A telemetry system and associated methods are also provided.
E21B 47/13 - 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
H04L 27/04 - Circuits de modulation; Circuits émetteurs
A gauge apparatus comprises a body member, one or more gauge arms biased outwardly from the body member for engagement with a wall of the elongated space, and one or more deformable regions. The gauge apparatus is configured so that a variation in an outward extension of each gauge arm from the body member induces a change in strain in a corresponding one of the one or more deformable regions. A gauge system comprises the gauge apparatus and an optical fibre attached to the gauge apparatus so that a strain in each deformable region of the gauge apparatus is transferred to a corresponding sensor portion of the optical fibre. The gauge system may be used for making real-time measurements of a geometry of an elongated space such as a wellbore of an oil and gas well.
A connector is described, comprising a housing comprising an internal volume, a port in the housing for receiving a conduit and providing access to the internal volume, a sealing arrangement for sealing the internal volume in the housing and a seal integrity test system comprising a sensor coupled to the housing. The seal integrity test system is configured to provide a measurement based on the pressure inside the internal volume of the housing to establish the integrity of the sealing arrangement.
G01M 3/32 - Examen de l'étanchéité des structures ou ouvrages vis-à-vis d'un fluide par utilisation d'un fluide ou en faisant le vide par mesure du taux de perte ou de gain d'un fluide, p.ex. avec des dispositifs réagissant à la pression, avec des indicateurs de débit pour récipients, p.ex. radiateurs
E21B 47/117 - Détection de fuites, p.ex. du tubage, par test de pression
G01M 3/36 - Examen de l'étanchéité des structures ou ouvrages vis-à-vis d'un fluide par utilisation d'un fluide ou en faisant le vide par détection des variations dans les dimensions de la structure à tester
A method and system of opportunistic communication in a well structure are provided. The method comprises identifying at a first location an existing signal propagating in a section of the well structure between the first location and a second location; modifying that existing signal so as to encode information at the first location for opportunistic communication of that information to the second location; and receiving the modified signal at the second location and decoding the signal so as to retrieve the information.
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
E21B 41/02 - Lutte contre la corrosion sur place dans les trous de forage ou dans les puits
E21B 47/14 - 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 utilisant des ondes acoustiques
H04B 3/54 - Systèmes de transmission par lignes de réseau de distribution d'énergie
28.
METHODOLOGY FOR ANALYSIS OF VALVE DYNAMIC CLOSURE PERFORMANCE
A method for calculating a valve closure time includes performing a computational fluid dynamics model simulation of the valve. The method also includes performing multiple functional performance analysis model simulations of the valve based on the computational fluid dynamics model simulation of the valve to calculate the valve closure time. The functional performance analysis model simulations are based on a numerical solution of a second order differential equation according to an equation of motion given by: (I), where mL is a mass of translating components, y(t) is a piston displacement at a given time t, Ft is a force on the valve due to fluid flow, ?µ is a friction force, FD is a hydraulic damping force on the piston, FD is a spring force, FPPA is a hydraulic piston pressure assist force, FBPA is a hydraulic bore pressure assist force, and FG is a force due to gravity.
G06F 30/28 - Optimisation, vérification ou simulation de l’objet conçu utilisant la dynamique des fluides, p.ex. les équations de Navier-Stokes ou la dynamique des fluides numérique [DFN]
An apparatus for controlling communication of data in a communications network within a well environment. The apparatus comprises a computer processor configured to undertake a method. The method comprises analysing previously recorded well parameter data recorded in the and/or one or more further well environments; determining, based on the analysed well parameter data, a communication protocol for a node of the communications network; and uploading the determined communication protocol to the node. When deployed in the well environment, the node is configured to transmit and/or receive communications signals to/from one or more further nodes in the communications network using the determined communication protocol.
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
A downhole injector apparatus for injecting a taggant into a wellbore comprises an injector nozzle outlet and a taggant reservoir in fluid communication with the injector nozzle outlet and configured to hold the taggant to be injected. The apparatus further comprises a pressure wave generator configured to apply a pressure wave within the reservoir to expel the taggant from the reservoir through the injector nozzle outlet.
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
A subsea test tree assembly (40) is disclosed which comprises at least one subsea test tree or SSTT (70, 72), the SSTT comprising a valve (74, 76) having at least one of a cutting function and a sealing function, the valve being movable between an open position and a closed position via hydraulic fluid supplied to the valve through control lines (78, 80; 82, 84); and a control system (86) comprising a source of hydraulic fluid (88), the control system being arranged to supply hydraulic fluid from the source of hydraulic fluid to the valve of the at least one SSTT on detecting that the control lines have been sheared, to automatically move the valve to the closed position. A method of controlling a well using an SSTT assembly is also disclosed.
A wax cutter tool for removing wax from an internal wall of an oil well tubing, the wax cutter tool comprising: a central wax cutter tool body, the central wax cutter tool body being configured to be attached to an elongate member for deployment down an oil well tubing; and one or more wax cutter elements extending radially outwards from the central wax cutter tool body, the one or more wax cutter elements having an outer working surface for engaging the internal wall of the oil well tubing in use, the outer working surface of the one or more wax cutter elements defining an outer diameter of the wax cutter tool, wherein the one or more wax cutter elements are flexible thereby allowing compression of the one or more cutter elements in use when deployed within the oil well tubing such that the outer diameter of the outer working surface of the one or more wax cutter elements is reduced to match an inner diameter of the oil well tubing when inserted into the oil well tubing to remove wax from the inner wall of the oil well tubing.
A downhole gauge device for use in a well is described. The downhole gauge device comprising: one or more electrical systems including at least one measurement means for obtaining measurement data and a data transmitting means configured to transmit measurement data to a receiving station; a first power supply configured to supply a first amount of power to any of the one or more electrical systems; a second power supply configured to supply a second amount of power that is greater than the first amount of power to any of the one or more electrical systems; and means for selectively enabling one or both of the first and second power supply.
There are described devices and methods for use, for example, with signalling in a well, e.g. using a well structure of the well. Such signalling may include the communication of power and/or data signals. The devices and methods used may assist with efficient and/or effective communication of such signals. In some examples, there is described deployable devices and methods, e.g. a deployable device for signalling contact in a well, and methods associated therewith.
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 17/10 - Protecteurs contre l'usure; Dispositifs de centrage
The present disclosure describes a subsea well installation (10) including an Xmas tree (12) coupled to a wellhead (14). A guide frame (30) is located at a lower region of the Xmas tree (12). A flush and cap tool (FACT) adaptor (24) is mounted on an upper region of the Xmas tree (12). A tension arrangement (34) extends between the guide frame (30) and the FACT adaptor (24), to apply a compressive force through the Xmas tree (12).
An autonomous intervention system (10) configured to perform an intervention operation in a wellbore (12) comprises a tool housing (20) having a tool storage compartment (21) configured to house an intervention tool (18). A valve arrangement (22) permits selective communication of tools and fluid between the tool housing (20) and the wellbore (12). The intervention system (10) is configured to move in response to an activation event between a tool storage configuration in which the tool housing (20) is isolated from the wellbore (12) by the valve arrangement (22) and an activated configuration in which the valve arrangement (22) is open and the tool housing (20) communicates with the wellbore (12) to permit deployment of the intervention tool (18) by a tool deployment arrangement (30).
E21B 33/072 - Têtes de puits; Leur mise en place comportant des dispositions pour introduire des objets dans les puits ou pour les en retirer, ou pour y introduire des fluides pour les outils manœuvrés par câbles
E21B 33/076 - Têtes de puits; Leur mise en place comportant des dispositions pour introduire des objets dans les puits ou pour les en retirer, ou pour y introduire des fluides spécialement adaptés aux installations sous l'eau
A valve seat (42a) for a valve (24) is disclosed, the valve seat facilitating cutting of a body (82) located within the seat. The valve seat comprises a sealing surface (76) for sealing with a valve member (44) and an annular cutting component (78) comprising a plurality of cutting teeth (80). The cutting teeth (80) are spaced apart along a circumference of the cutting component (78) and each define an elongate crest (100). A valve (24) is also disclosed which comprises a housing (40) having a bore (41), a valve member (44) and the valve seat (42a). The valve seat (42a) is arranged within the housing (40) in communication with the housing bore (41). The valve member (44) is movable relative to the housing (40) between an open position and a closed position.
A perforating gun, perforating gun system, and method for producing the same is provided. The perforating gun includes a body and at least one cavity liner. The body has an axial length extending between a first axial end and a second axial end, and an outer radial surface extending between the first and second axial ends, an inner bore, and at least one shaped charge cavity disposed in the outer radial surface. The at least one shaped charge cavity is in fluid communication with the inner bore. The at least one cavity liner is disposed in the shaped charge cavity and is configured to retain an explosive material within the shaped charge cavity.
A fluid control system, comprising an apparatus comprising a first and second fluid port, first and second control lines, a valve arrangement being configurable between a first state in which the first fluid port is in fluid communication with the first control line and the second fluid port is in fluid communication with the second control line, wherein the apparatus is switchable between first and second configurations responsive to pressure differentials between the first and second control lines, and a second state in which the second fluid port is in fluid communication with a pressurized line and the first fluid port is in fluid communication with a vent arrangement to thereby configure the apparatus into the second configuration, and a control arrangement for reconfiguring the valve arrangement between the first and second states in response to an actuation signal.
In described examples, there are systems and methods for deployment in proximity to an abandoned well. The systems and methods may allow use of data collected from an abandoned well, in which a sensor is positioned in the open hole section, or a well having a discontinuous metallic well structure. In some examples, there is described a communication system that is configured to be deployed in an abandoned well having a discontinuous metallic well structure that may be severed below a ground region.
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
In described examples, there are systems and methods for deployment in proximity to an abandoned well. The systems and methods may help monitor conditions at an abandoned well and/or help communicate with downhole communicate devices. In some examples, there is described a communication system that is configured to be deployed in proximity to an abandoned well having a metallic well structure severed below a ground region. The system may comprise a plurality of receivers configured to be deployed at the ground region in proximity to the abandoned well, and configured to receive data signals from the metallic well structure of the abandoned well via the ground region. The system may comprise a processing unit, in communication with the receivers, and configured to receive and process data signals from the receivers.
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
42.
WELL BARRIER INTEGRITY MONITORING SYSTEMS AND METHODS
Methods and apparatus for determining the condition of a barrier (130) in a well infrastructure (100, 110). In some examples, sensor data that has been derived from a sensor arrangement at a barrier (130) positioned at a location in a well infrastructure (100, 110) in received. That sensor data may be associated with measured conditions at the barrier (130), such as pressure and/or temperature. Composition data derived from measurements of fluid composition within the well (100) may also be received. Such composition data may be indicative of the location at which fluid has been in the well (100). Analysing such received sensor data and composition data may help determine the condition of the barrier (130). In some examples, there is described well (100) apparatus comprising a barrier (130) for zonal isolation, a sensor arrangement configured to monitor conditions at the location of the barrier (130); and one or more tracer elements (310) configured to interact with fluid at the location of the barrier (130) so as to impart identifiable properties to the composition of fluid.
Measurement system and methods with landing string systems. Some examples describe a system having a measurement device (110) with mechanical sensors (130), which can be used to observe mechanical conditions associated with a landing string (10). Further, data-storage devices (150) are considered, which are in communication with the measurement devices, and allow storage, from time to time, of data associated with the observed mechanical conditions. Further, a power assembly (160) may be used to provide power to the data-storage device for at least an expected time of service of the system.
A ball valve comprises a housing, a ball seat (42) arranged in the housing and a ball member (44) mounted within the housing and being rotatable relative to the ball seat between open and closed positions. The ball seat and ball member define respective through bores, and the ball member comprises a sealing surface, a bore surface and a truncated leading edge surface (56a) extending between the sealing surface and the bore surface, the truncated leading edge surface being configured to cut a body extending at least partially through the valve upon closure of the ball member. The ball member may comprise a relief region (180a) proximate the leading edge surface.
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 33/043 - Têtes de tubage; Suspension des tubages ou des colonnes de production dans les têtes de puits spécialement adaptées aux têtes de puits sous l'eau
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
A landing string comprises a valve having a valve member mounted within a flow path extending through the landing string, and a valve control system for use in operating the valve to move the valve member between open and closed positions to control flow along the flow path. The valve control system is reconfigurable between a first configuration in which the valve is operated or controlled under a fail-as-is (FAI) mode of operation, and a second configuration in which the valve is operated or controlled under a fail-close (FC) mode of operation..
A ball valve apparatus comprises a housing (62) defining a housing inlet (78) and a housing outlet (80) and a valve cartridge (64) mounted within the housing and defining a cartridge flow path extending between a cartridge inlet (74) and a cartridge outlet (76), wherein the cartridge inlet is arranged in fluid communication with the housing inlet and the cartridge outlet is arranged in fluid communication with the housing outlet. A ball valve member (96) is mounted within the valve cartridge and is rotatable to selectively open and close the cartridge flow path. A leak chamber (70) is defined between the housing and the cartridge for containing fluid leakage from the valve cartridge. A subsea system with a stress joint (28), a light weight intervention system (10) with an emergency disconnect (36) connector and a method for deploying a subsea system are moreover claimed.
E21B 43/013 - Raccordement d'une colonne de production à une tête de puits sous l'eau
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 33/076 - Têtes de puits; Leur mise en place comportant des dispositions pour introduire des objets dans les puits ou pour les en retirer, ou pour y introduire des fluides spécialement adaptés 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
A connection arrangement for use in establishing a connection with an object comprises a body and a connection member comprising a plurality of dogs each pivotally arranged relative to the body about a pivot axis and including an engagement feature, wherein the dogs are pivotal between an engaged configuration in which the engagement feature is engaged with the object to provide a connection thereto, and a disengaged configuration in which the engagement feature is disengaged from the object. The connection arrangement further includes an actuator member, wherein the dogs and actuator member define a pair of complementary actuation surfaces which cooperate when the actuator member moves from a first to a second direction to cause the plurality of dogs to pivot from the engaged configuration towards the disengaged configuration. A first actuation surface on the actuator member includes a first cam and a second cam which are in continuous contact with a second actuation surface on the plurality of dogs. Three points of contact between each dog, its respective pivot axis and the first and second cams, are formed and arranged to fix the position of each dog relative to a given position of the actuator member, at least until the engagement feature has engaged with the object.
A valve assembly for wellbore, downhole or intervention operations, such as for subsea wellbore operations comprises a rotatable valve member having a passage formed therein. The valve assembly is reconfigurable between a first configuration in which the passage is aligned or alignable with a first conduit, and a second configuration in which the passage is misaligned or misalignable with the first conduit, so as to cut or sever and/or clamp apparatus present in the valve member passage prior to reconfiguration. The assembly is configured to apply a maximum cutting force at a particular phase or stage of the reconfiguration.
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
A well installation communication system comprising downhole metallic structure (2), a downhole communication unit (3), and a surface communication unit (4) arranged for electrical signal communication with the downhole communication unit via a signal channel. The signal channel comprises a portion of the downhole metallic structure (2), a portion of cable (5) running within the downhole metallic structure away from said portion of the downhole metallic structure towards the surface and a connection device (6). The connection device (6) is in the signal channel between the portion of metallic structure (2) and the portion of cable (5). The connection device is removeably deployed in the metallic structure, is electrically disconnectably and reconnectably connected to the metallic structure and has a connector portion to which an end of the cable is mechanically and electrically connected.
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
A Lateral bore communication system where data signals are transmitted across the break in conductive path between a main bore (3) and a lateral bore (3') using a downhole structure section (5) which has an electrode (52) provided around a tubing portion (51) and separated therefrom by an insulating layer (53).
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
A downhole signalling system for electrical signalling in a well installation having metallic structure in which the metallic structure is used as a signal channel. At least one magnetic material toroid (51) is provided around downhole metallic tubing (13) of the metallic structure and located between transmitting and receiving locations (43). A winding (52) is wound around the magnetic material toroid (51), and connected to a cable (53) which runs alongside the metallic tubing (13) away from the toroid (51) to replace the metallic structure as the signal channel for part of its length with the toroid (51) and winding (52) serving to transfer signals between the cable (53) and the metallic structure (12,13).
E21B 47/13 - 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
G01V 3/34 - Transmission de données aux appareils d'enregistrement ou de traitement; Enregistrement de données
52.
ELECTRICAL POWER AND/OR ELECTRICAL SIGNAL TRANSMISSION
Downhole water level detecting apparatus for detecting the level of water in a formation in the region of a well installation. The detecting apparatus comprises a transmitter (21) for applying electrical signals to a signalling loop at a first location. The signalling loop comprises downhole metallic structure of the well installation (1) and an earth return. The detecting apparatus also includes a detector (31) for monitoring electrical signals in the signalling loop, and an evaluation unit (32) arranged for determining a level of water in the formation relative to the downhole metallic structure in dependence on the monitored signals.
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
G01V 3/20 - 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 propagation de courant électrique
A valve assembly (2) which is configured to be coupled to a tubing string comprises a housing (8) defining a housing flow path (9) for communicating with the tubing string, and a barrier member (14) located in the housing (8) and configurable between a normally-closed position in which the barrier member (14) restricts access through the housing flow path (9), and an open position in which access is permitted through the housing flow path (9). The valve assembly (2) also comprises a bypass arrangement reconfigurable between an open state in which the bypass arrangement defines a bypass flow path that communicates with the housing flow path (9) on opposite sides of the barrier member (14) to permit fluid to bypass the barrier member and thereby fill the tubing string, and a closed state in which fluid is prevented from bypassing the barrier member to thereby permit press urization of the tubing string.
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 34/14 - Aménagements des vannes pour les trous de forage ou pour les puits dans les puits actionnés par le mouvement des outils, p.ex. obturateurs à manchons actionnés par des pistons ou par des outils à câble
Downhole electrical power generation apparatus and methods using stored pressurised gas and/or ambient down-hole pressure. One example apparatus comprises first and second fluid receiving chambers (21a, 21b), a fluid communication path (24a) for allowing flow of fluid from the first chamber (21a) via the fluid communication path (24a) to the second chamber (21b) and a turbine generator (26) disposed so that fluid flowing from the first chamber via the fluid communication path to the second chamber operates the turbine generator (26) to generate electrical power.
Flowline electrical impedance generation means (5) for generating a local electrical impedance in a metallic tubing portion of a flowline (21). Such means (5) may be used in place of insulation joints in various systems. The impedance generation means (5) is tuned or tuneable to achieve maximum impedance at chosen frequencies - ie frequencies which it is desired to block.
A well installation comprising metallic structure including downhole metallic tubing (11, 12) for conveying product towards the surface, a sub surface safety valve (2) disposed in the downhole metallic tubing for interrupting flow of product towards the surface when closed and allowing flow of product towards the surface when open. Also provided are valve control means (3) disposed downhole and arranged for detecting electrical signals in the downhole metallic tubing and for holding the valve open whilst receiving an electrical signal, and surface signalling means (4) for applying an electrical signal to metallic structure of the well for transmission via the downhole metallic tubing towards the valve control means so as to hold the valve open. The system can be made more robust by ensuring that the control means (3) will only hold the valve open whilst receiving a signal of given characteristics to help prevent stray currents erroneously holding the valve open. This signal selective aspect of the system may be implemented using a tuned impedance generation means (32).
E21B 34/06 - Aménagements des vannes pour les trous de forage ou pour les puits dans les puits
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
Methods of and apparatus for a downhole communication in a well. The well has a metallic structure which includes an insulated metallic, fluid carrying, control line. The method comprises the steps of applying signals to the control line at a first location and extracting the signals from the control line at a second location: There is also provided a downhole communication system for use in a well having a metallic structure. The metallic structure includes an insulated metallic, fluid carrying, control line. The system comprises means for applying signals to the control line at a first location and means for extracting the signals from the control line at a second location. The control line acts as a signal channel. Other methods and apparatus making use of control line carrying no fluid and/or the metallic shielding of cable having insulated metallic shield are also described.
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
Methods and systems for communicating with downhole locations and transmitting power to downhole locations. Use is made of a cable (3) passing someway down into the well. This cable (3) may be connected to a downhole sensor (2) and may be used primarily for communicating with that sensor (2), but also used in the current techniques. Electrical connection is achieved between the cable (3) and the metallic structure of the well to allow signals to be transferred between the communications tool (5) and the surface (4) via the cable (3).
A downhole signal receiving system where a pair of setting devices (51) are used to electrically connect with downhole structure and are connected to one another by a bulk conductor (52). Signals are extracted by using a detecting means (53) that does not interrupt the conduction path. The tool provides a low impedance conduction path along which signals from the surrounding structure can flow to facilitate detection.
A conductive slickline cable for use in oil wells is described which comprises a matrix material, preferably PEEK, a plurality of electrical conductors embedded in the maxtrix material with each electrical conductor being insulated by an imide. The cable has an outer protective coating of PEEK and an overall diameter less than 4mm, and preferably the same diameter as slickline cable, 3.175mm. The cable has a number of advantages being load bearing and being windable onto conventional slickline reels, as well as being offering electrical and power communication downhole.
A method of downhole data communication in a well in which there is a flow of product from the formation towards the surface, the data communication taking place between two locations in the flow path, at least one of which is downhole in the well, and the method comprising the steps of controlling a flow rate of the product at a first of the two locations in dependence on data to be transmitted; detecting, at the second of the two locations, the effect of said controlling of the flow rate of the product at the first location; using the results of the detecting step to extract the data transmitted; and keeping the nominal flow rate at the first location at a state for at least a minimum period chosen to allow this change in state to propagate to the second location.
E21B 47/18 - 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 utilisant des ondes acoustiques à travers le fluide du puits
A data communication technique for use in producing wells. Signals are transmitted through the product (p) by varying and monitoring flow rate at respective ends of the communication channel. At low data rates robust communication can be provided.
E21B 47/20 - 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 utilisant des ondes acoustiques à travers le fluide du puits par modulation dans la boue de forage, p.ex. par modulation continue
E21B 34/06 - Aménagements des vannes pour les trous de forage ou pour les puits dans les puits
E21B 43/12 - Procédés ou appareils pour commander l'écoulement du fluide extrait vers ou dans les puits
brevets
