A method of monitoring the performance of a multi-phase electric motor (13), wherein the electric motor comprises a plurality of stator windings (7, 8, 9) connected in a wye configuration to form a wye point. The method comprises measuring an electrical characteristic of the wye point in a time domain; based upon the measured electrical characteristic of the wye point in the time domain, determining an electrical characteristic of the wye point in the frequency domain; and deriving data indicative of at least one parameter of the performance of the electric motor based upon the determined electrical characteristic of the wye-point in the frequency domain.
H02K 11/35 - Dispositifs pour enregistrer ou transmettre la valeur des paramètres d’une machine, p.ex. puces de mémoire ou émetteurs radio pour le diagnostic
E21B 43/12 - Procédés ou appareils pour commander l'écoulement du fluide extrait vers ou dans les puits
G01R 23/16 - Analyse de spectre; Analyse de Fourier
The present disclosure is for a tool for measurement of phases in fluid in downhole applications. The tool includes a light coupler for providing a first light and for detecting a second light. The first light is provided to an optical interface and the second light is received from the optical interface. The optical interface is between the tool and the fluid. An optical path is provided that is integral or coupled to the optical interface. The optical path allows transmission of the first light into the fluid at the optical interface and also allows receiving the second light from the optical interface. The second light includes one or more light components disturbed by the fluid. A processor provides digital data associated with the measurement of phases in the fluid using optical data from at least the second light.
The present disclosure is for a tool for measurement of phases in fluid in downhole applications. The tool includes a light coupler for providing a first light and for detecting a second light. The first light is provided to an optical interface and the second light is received from the optical interface. The optical interface is between the tool and the fluid. An optical path is provided that is integral or coupled to the optical interface. The optical path allows transmission of the first light into the fluid at the optical interface and also allows receiving the second light from the optical interface. The second light includes one or more light components disturbed by the fluid. A processor provides digital data associated with the measurement of phases in the fluid using optical data from at least the second light.
Embodiments of the present disclosure include a system for driving an arm (60, 80, 82) radially outward from a work string axis including a pivot block (76A, 76B) coupled to the arm at a first coupling, the arm rotating about the first coupling in a first direction to move from a stored position to an expanded position, and about the first coupling in a second direction to move from the expanded position to the stored position. The system also includes a biasing member that drives movement of the arm in the first direction. The system further includes a chamber for storing the biasing member within a pivot block diameter when the arm is in the stored position.
E21B 47/00 - Relevés dans les trous de forage ou dans les puits
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
E21B 17/10 - Protecteurs contre l'usure; Dispositifs de centrage
G01V 11/00 - Prospection ou détection par des méthodes combinant des techniques spécifiées dans les groupes
5.
SENSOR BRACKET SYSTEM AND METHOD FOR A DOWNHOLE TOOL
Embodiments of the present disclosure include a system for positioning a sensor within a flow path of a wellbore annulus including a work string extending into the well bore annul us from a surface location. The system includes a moveable arm on the work string, the arm transitioning between a first radial location and a second radial location. The system further includes a bracket coupled to the arm, the bracket being pivotable about a pivot axis, wherein the bracket supports the sensor and transitions the sensor from a stored position to a deployed position.
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 23/00 - Appareils pour déplacer, mettre en place, verrouiller, libérer ou retirer, les outils, les packers ou autres éléments dans les trous de forage
Embodiments of the present disclosure include a sensor deployment system with a first bulkhead arranged at a first end of a downhole tool, a second bulkhead arranged at a second end of the downhole tool, opposite the first end, a first pivot block arranged proximate the first bulkhead, a second pivot block arranged proximate the second bulkhead, and an arm rotatably coupled to the first and second pivot blocks at opposite ends of the arm, wherein rotation of at least a portion of the arm drives at least a portion of the arm radially outward from an axis of the downhole tool.
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 23/00 - Appareils pour déplacer, mettre en place, verrouiller, libérer ou retirer, les outils, les packers ou autres éléments dans les trous de forage
Embodiments of the present disclosure include a system for positioning a sensor within a flow path of a wellbore annulus including a work string extending into the well bore annul us from a surface location. The system includes a moveable arm on the work string, the arm transitioning between a first radial location and a second radial location. The system further includes a bracket coupled to the arm, the bracket being pivotable about a pivot axis, wherein the bracket supports the sensor and transitions the sensor from a stored position to a deployed position.
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 23/00 - Appareils pour déplacer, mettre en place, verrouiller, libérer ou retirer, les outils, les packers ou autres éléments dans les trous de forage
Embodiments of the present disclosure include a deployment system including an actuator. The deployment system also includes an actuator arm coupled to the actuator. The deployment system further includes a crank rotatably coupled at a pivot point. The deployment system also includes a first link arm coupled to the actuator arm at a first end and the crank at a second end. The deployment system includes a second link arm coupled to the crank at a first end and a deployment arm at a second end, the second link arm transmitting rotational movement of the crank to the deployment arm.
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 41/00 - Matériel ou accessoires non couverts par les groupes
Embodiments of the present disclosure include a deployment system including an actuator. The deployment system also includes an actuator arm coupled to the actuator. The deployment system further includes a crank rotatably coupled at a pivot point. The deployment system also includes a first link arm coupled to the actuator arm at a first end and the crank at a second end. The deployment system includes a second link arm coupled to the crank at a first end and a deployment arm at a second end, the second link arm transmitting rotational movement of the crank to the deployment arm.
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 41/00 - Matériel ou accessoires non couverts par les groupes
Embodiments of the present disclosure include a sensor deployment system with a first bulkhead arranged at a first end of a downhole tool, a second bulkhead arranged at a second end of the downhole tool, opposite the first end, a first pivot block arranged proximate the first bulkhead, a second pivot block arranged proximate the second bulkhead, and an arm rotatably coupled to the first and second pivot blocks at opposite ends of the arm, wherein rotation of at least a portion of the arm drives at least a portion of the arm radially outward from an axis of the downhole tool.
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 23/00 - Appareils pour déplacer, mettre en place, verrouiller, libérer ou retirer, les outils, les packers ou autres éléments dans les trous de forage
11.
Sensor bracket positioned on a movable arm system and method
A system for positioning a sensor within a flow path of a wellbore annulus includes a work string extending into the wellbore annulus from a surface location. The system includes a movable arm on the work string, the arm transitioning between a first radial location and a second radial location. The system further includes a bracket coupled to the arm, the bracket being pivotable about a pivot axis, wherein the bracket supports the sensor and transitions the sensor from a stored position to a deployed position.
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 17/10 - Protecteurs contre l'usure; Dispositifs de centrage
12.
Sensor deployment using a movable arm system and method
A system for driving an arm radially outward from a work string axis includes a pivot block coupled to the arm at a first coupling, the arm rotating about the first coupling in a first direction to move from a stored position to an expanded position, and about the first coupling in a second direction to move from the expanded position to the stored position. The system also includes a biasing member that drives movement of the arm in the first direction. The system further includes a chamber for storing the biasing member within a pivot block diameter when the arm is in the stored position.
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 23/14 - Appareils pour déplacer, mettre en place, verrouiller, libérer ou retirer, les outils, les packers ou autres éléments dans les trous de forage pour déplacer un câble ou un outil manoeuvré par câble, p.ex. pour les opérations de diagraphie ou de perforation dans les puits déviés
Embodiments of the present disclosure include a deployment system including an actuator. The deployment system also includes an actuator arm coupled to the actuator. The deployment system further includes a crank rotatably coupled at a pivot point. The deployment system also includes a first link arm coupled to the actuator arm at a first end and the crank at a second end. The deployment system includes a second link arm coupled to the crank at a first end and a deployment arm at a second end, the second link arm transmitting rotational movement of the crank to the deployment arm.
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
F16H 21/44 - Transmissions ne comportant essentiellement que des tringles ou des leviers, avec ou sans glissières tout mouvement étant dans un seul plan ou dans des plans parallèles pour convertir un mouvement oscillant en mouvement alternatif et vice versa ou pour transmettre ces mouvements
14.
Sensor deployment system and method using a movable arm with a telescoping section
A sensor deployment system includes a first bulkhead arranged at a first end of a downhole tool, a second bulkhead arranged at a second end of the downhole tool, opposite the first end, a first pivot block arranged proximate the first bulkhead, a second pivot block arranged proximate the second bulkhead, and an arm rotatably coupled to the first and second pivot blocks at opposite ends of the arm. Rotation of at least a portion of the arm drives at least a portion of the arm radially outward from an axis of the downhole tool.
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 17/10 - Protecteurs contre l'usure; Dispositifs de centrage
E21B 49/08 - Prélèvement d'échantillons de fluides ou test des fluides dans les trous de forage ou dans les puits
15.
METHODS AND SYSTEMS FOR MONITORING THE PERFORMANCE OF ELECTRIC MOTORS
A method of monitoring the performance of a multi-phase electric motor (13), wherein the electric motor comprises a plurality of stator windings (7, 8, 9) connected in a wye configuration to form a wye point. The method comprises measuring an electrical characteristic of the wye point in a time domain; based upon the measured electrical characteristic of the wye point in the time domain, determining an electrical characteristic of the wye point in the frequency domain; and deriving data indicative of at least one parameter of the performance of the electric motor based upon the determined electrical characteristic of the wye-point in the frequency domain.
A method of monitoring the performance of a multi-phase electric motor (13), wherein the electric motor comprises a plurality of stator windings (7, 8, 9) connected in a wye configuration to form a wye point. The method comprises measuring an electrical characteristic of the wye point in a time domain; based upon the measured electrical characteristic of the wye point in the time domain, determining an electrical characteristic of the wye point in the frequency domain; and deriving data indicative of at least one parameter of the performance of the electric motor based upon the determined electrical characteristic of the wye-point in the frequency domain.
A sensor for measuring a property comprises: a radiation source, a detector and a sensing element. The radiation source is operable to produce a radiation beam. The detector is provided with a detecting surface for receiving radiation and outputting a signal in dependence on the received radiation. An aperture extends through the detector from the detecting surface to an opposed surface. The sensing element is operable to receive radiation and to reflect at least a portion of the radiation so as to form a reflected radiation beam, one or more properties of the reflected radiation beam being dependent on one or more properties to be measured. The radiation source and the sensing element are disposed on opposite sides of the detector such that the radiation source is arranged to direct the radiation beam through the aperture to the sensing element and the sensing element is arranged to direct the reflected radiation beam to the detecting surface of the detector.
E21B 49/08 - Prélèvement d'échantillons de fluides ou test des fluides dans les trous de forage ou dans les puits
G01N 21/85 - Analyse des fluides ou solides granulés en mouvement
G01N 21/359 - 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 infrarouge en utilisant la lumière de l'infrarouge proche
A sensor for measuring a property comprises: a radiation source, a detector and a sensing element. The radiation source is operable to produce a radiation beam. The detector is provided with a detecting surface for receiving radiation and outputting a signal in dependence on the received radiation. An aperture extends through the detector from the detecting surface to an opposed surface. The sensing element is operable to receive radiation and to reflect at least a portion of the radiation so as to form a reflected radiation beam, one or more properties of the reflected radiation beam being dependent on one or more properties to be measured. The radiation source and the sensing element are disposed on opposite sides of the detector such that the radiation source is arranged to direct the radiation beam through the aperture to the sensing element and the sensing element is arranged to direct the reflected radiation beam to the detecting surface of the detector.
E21B 49/08 - Prélèvement d'échantillons de fluides ou test des fluides dans les trous de forage ou dans les puits
G01N 21/85 - Analyse des fluides ou solides granulés en mouvement
G01N 21/359 - 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 infrarouge en utilisant la lumière de l'infrarouge proche
A downhole tool (10) operatively associated with a downhole pump (P) for use in artificial lift applications comprises a body (12) having a throughbore (14) forming an axial flow passage and a plurality of lateral ports (16) forming a lateral flow passage, a valve seat (18) for co-operating with a valve member (22) and a sleeve member (20). In use, the downhole tool (10) is run into a borehole, such as an oil and/or gas production well borehole (B), as part of a tubing string (S), the downhole tool (10) being configured to permit selective axial passage of fluid through the downhole tool (10) while lateral passage of fluid is prevented, the downhole tool (10) being operable to move from the first, closed, configuration to the second, open, configuration in response to the activation event to divert fluid through the lateral flow passage into an annulus (A) between the downhole tool (10) and the borehole (B).
E21B 21/10 - Aménagements des vannes dans les systèmes de circulation des fluides de forage
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 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
20.
DOWNHOLE TOOL HAVING AN AXIAL PASSAGE AND A LATERAL FLUID PASSAGE BEING OPENED / CLOSED
A downhole tool (10) operatively associated with a downhole pump (P) for use in artificial lift applications comprises a body (12) having a throughbore (14) forming an axial flow passage and a plurality of lateral ports (16) forming a lateral flow passage, a valve seat (18) for co-operating with a valve member (22) and a sleeve member (20). In use, the downhole tool (10) is run into a borehole, such as an oil and/or gas production well borehole (B), as part of a tubing string (S), the downhole tool (10) being configured to permit selective axial passage of fluid through the downhole tool (10) while lateral passage of fluid is prevented, the downhole tool (10) being operable to move from the first, closed, configuration to the second, open, configuration in response to the activation event to divert fluid through the lateral flow passage into an annulus (A) between the downhole tool (10) and the borehole (B).
E21B 21/10 - Aménagements des vannes dans les systèmes de circulation des fluides de forage
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 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
A mechanism for securing a series of fiber optic cable connectors includes a base that has several connector recesses and a lid that is removably attached to the base. The mechanism may be used to ruggedly connect a series of fiber optic cables in a downhole instrument where space is limited, with the ability to break each of the series of fiber optic cables individually.
G02B 6/38 - Moyens de couplage mécaniques ayant des moyens d'assemblage fibre à fibre
G02B 6/00 - OPTIQUE ÉLÉMENTS, SYSTÈMES OU APPAREILS OPTIQUES - Détails de structure de dispositions comprenant des guides de lumière et d'autres éléments optiques, p.ex. des moyens de couplage
A mechanism for securing a fibre optic cable connector includes a base that has a connector recess and a lid that is removably attached to the base. The mechanism may be used to connect a first fibre optic cable with a second fibre optic cable in a downhole instrument or in a deployment cable connected to the downhole instrument.
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
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 peak hold circuit configured for use in a downhole sensor includes a long tail pair circuit, a correction circuit, and a current mirror circuit. The current mirror circuit includes two current mirrors connected to a long tail pair formed by a first transistor and a second transistor. The current mirror also includes a first resistor and a second resistor connected to a third transistor. The first transistor is connected to a correction transistor of the correction circuit. The value of the first resistor is selected to be essentially equal to the same value as the second resistor so that when the long tail pair is balanced, the current flowing through a collector of the second transistor is equal to the current flowing through the first transistor, causing the correction transistor to switch off.
E21B 47/00 - Relevés dans les trous de forage ou dans les puits
E21B 49/08 - Prélèvement d'échantillons de fluides ou test des fluides dans les trous de forage 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
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
G11C 27/02 - Moyens d'échantillonnage et de mémorisation
G01V 11/00 - Prospection ou détection par des méthodes combinant des techniques spécifiées dans les groupes
E21B 47/06 - Mesure de la température ou de la pression
24.
METHOD FOR DETERMINING ELEMENTAL CONCENTRATIONS IN SPECTRAL GAMMA RAY LOGGING
A method for determining the concentrations of elements within a geologic formation includes the use of an inversion algorithm that seeks to minimize a cost function (F). The method includes the use of an iterative process 200 that updates the calculated concentrations of each element at each iteration using the gradient of the cost function (F). If the method returns a negative value for any of the elemental concentrations, the corresponding derivative is set to zero and the iterative process continues. The iteration is terminated if the difference between the model and measurement becomes suitably small or if a predetermined threshold number of iterations have been taken. The results of the determination of the elemental concentrations are displayed on a computer.
G01V 5/10 - Prospection ou détection au moyen de radiations nucléaires, p.ex. de la radioactivité naturelle ou provoquée spécialement adaptée au carottage en utilisant des sources de radiation nucléaire primaire ou des rayons X en utilisant des sources de neutrons
25.
SENSITIVE DC CURRENT IMBALANCE DETECTOR AND CALIBRATION METHOD
A current leakage detector (100) is configured for detecting current leakage between a power source and a load. The current leakage detector (100) includes a first sensing coil (122) and a second sensing coil (124) positioned opposite the first sensing coil (122). The current leakage detector (100) further includes a magnetic field sensor (126) proximate the first sensing coil (122) and the second sensing coil (124) and the magnetic field sensor has a response range. The current leakage detector also includes a bias circuit (132) configured to adjust the response range of the magnetic field sensor. A method for detecting current leakage includes the steps of providing a first sensing coil (122) and a second sensing coil (124). The method continues with the steps of providing a magnetic field sensor in proximity to the first and second sensing coils and providing a bias circuit. The method continues with the step of utilizing the bias circuit to place the response of the magnetic field sensor within a preferred response range.
G01R 15/20 - Adaptations fournissant une isolation en tension ou en courant, p.ex. adaptations pour les réseaux à haute tension ou à courant fort utilisant des dispositifs galvano-magnétiques, p.ex. des dispositifs à effet Hall
G01R 31/02 - Essai des appareils, des lignes ou des composants électriques pour y déceler la présence de courts-circuits, de discontinuités, de fuites ou de connexions incorrectes de lignes
H02H 3/33 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion sensibles à un angle de déphasage entre tensions ou courants comprenant la comparaison des valeurs de tension ou de courant en des points correspondants des différents conducteurs d'un même système, p.ex. de courants dans des conducteurs d'aller et retour utilisant des transformateurs sommateurs de courant
A gauge system and method for monitoring well pressure at temperatures in excess of 300° C. used in permanent monitoring of oil and gas wellbores. The gauge system includes an analog output transducer and a long cable which is an extruded mineral insulated multi-core cable with a seam welded corrosion resistant metal outer sheath. The transducer is enclosed in a pressure tight corrosion resistant housing and the housing is pressure sealed to the metal outer sheath. The method includes applying signal conditioning and processing to the measurements to compensate for characteristics of the transducer, the cable and the environment and thereby provide continuous monitoring of the wellbore.
E21B 47/06 - Mesure de la température ou de la pression
G01L 7/00 - Mesure de la pression permanente ou quasi permanente d’un fluide ou d’un matériau solide fluent par des éléments mécaniques ou hydrauliques sensibles à la pression
G01L 19/00 - MESURE DES FORCES, DES CONTRAINTES, DES COUPLES, DU TRAVAIL, DE LA PUISSANCE MÉCANIQUE, DU RENDEMENT MÉCANIQUE OU DE LA PRESSION DES FLUIDES - Détails ou accessoires des appareils pour la mesure de la pression permanente ou quasi permanente d'un milieu fluent dans la mesure où ces détails ou accessoires ne sont pas particuliers à des types particuliers de manomètres
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
G01L 19/04 - Moyens pour compenser les effets des variations de température
A data communications system and method for transmitting data over a string between a surface location and a sub-surface location in a well bore in which a load varying device at the sub-surface varies the mechanical load on the string to be indicative of the data and a load measuring apparatus at surface monitors the mechanical load on the string and decodes the data. Data transmission is described from a pump assembly through a sucker rod string. Embodiments of load varying devices using electrical generators, friction rollers and hydraulic and pneumatic brakes 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
E21B 47/16 - 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 le long du train de tiges ou du tubage
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
28.
Multi-component fluid determination in a well bore
A fluid measurement system and method for determining component mixtures flowing in a conduit such as an oil well. The system includes a sensor wire for location in a well bore; a signal generator for injecting a high frequency signal along the wire; a data acquisition unit to record first reflected signals received from the wire; a system criteria unit to maintain a data set relevant to the system, and a processor unit operable to act upon the first reflected signals and the data set to establish an output indicative of component fluid within the well bore from which the mixture of fluids flowing within the well bore can be determined. An iterative process can be used with waveguide and probabilistic models.
G01V 3/18 - 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
A three phase power system provided with a data communications system and associated method of data transmission for transmitting data over a three phase power system between a surface and a sub-surface location for an arrangement such as an oil field electrical submersible pump, the data communications system comprising a cabled connection from a surface system to a sub-surface system; a power module coupled to the cabled connection via a tuned circuit tuned to a first frequency, a data signal module coupled to the cabled connection via a tuned circuit tuned to a second frequency, independently of the coupled power module so as to minimize interference between the power signal module and data signal module during operation.
G01V 3/00 - Prospection ou détection électrique ou magnétique; Mesure des caractéristiques du champ magnétique de la terre, p.ex. de la déclinaison ou de la déviation
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
H04B 3/54 - Systèmes de transmission par lignes de réseau de distribution d'énergie
E21B 43/12 - Procédés ou appareils pour commander l'écoulement du fluide extrait vers ou dans les puits
A peak hold circuit configured for use in a downhole sensor includes a long tail pair circuit, a correction circuit, and a current mirror circuit. The current mirror circuit includes two current mirrors connected to a long tail pair formed by a first transistor and a second transistor. The current mirror also includes a first resistor and a second resistor connected to a third transistor. The first transistor is connected to a correction transistor of the correction circuit. The value of the first resistor is selected to be essentially equal to the same value as the second resistor so that when the long tail pair is balanced, the current flowing through a collector of the second transistor is equal to the current flowing through the first transistor, causing the correction transistor to switch off.
A peak hold circuit configured for use in a downhole sensor includes a long tail pair circuit, a correction circuit, and a current mirror circuit. The current mirror circuit includes two current mirrors connected to a long tail pair formed by a first transistor and a second transistor. The current mirror also includes a first resistor and a second resistor connected to a third transistor. The first transistor is connected to a correction transistor of the correction circuit. The value of the first resistor is selected to be essentially equal to the same value as the second resistor so that when the long tail pair is balanced, the current flowing through a collector of the second transistor is equal to the current flowing through the first transistor, causing the correction transistor to switch off.
A system and method for transmitting data over a three phase power system between a surface and a sub-surface location. A first power supply providing a first AC power signal and a second power supply providing a second AC power signal are at the surface. A first powered module and a second powered module which provides a data communications signal are at the sub-surface. A cable connection is provided between the surface and the sub-surface to transmit the power and data communication signals. The data communications signal provides an indication of power applied to the second powered module and a power signal is varied in response to the applied power. The invention finds specific application monitoring down hole equipment such as an electrical submersible pump in a wellbore.
G01V 3/00 - Prospection ou détection électrique ou magnétique; Mesure des caractéristiques du champ magnétique de la terre, p.ex. de la déclinaison ou de la déviation
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
H04B 3/54 - Systèmes de transmission par lignes de réseau de distribution d'énergie
E21B 43/12 - Procédés ou appareils pour commander l'écoulement du fluide extrait vers ou dans les puits
A data communications system and associated method of data transmission for transmitting data over a three phase power system between a surface and a sub-surface location for an arrangement such as an oil field electrical submersible pump, on each of the three conductors of a three phase cabled connection with an isolation mechanism operable to isolate any given conductor when a fault associated with that conductor is detected. With the system providing a separate AC signal and data transfer on each conductor isolation can be achieved while enabling continued operation.
G01V 3/00 - Prospection ou détection électrique ou magnétique; Mesure des caractéristiques du champ magnétique de la terre, p.ex. de la déclinaison ou de la déviation
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
H04B 3/54 - Systèmes de transmission par lignes de réseau de distribution d'énergie
E21B 43/12 - Procédés ou appareils pour commander l'écoulement du fluide extrait vers ou dans les puits
A multiphase flowmeter (10) and method of determining the proportions of two or more fluids flowing and also the flow rate of each of the fluids present in a harsh environment of multiphase fluid flow through a conduit at a well. One or more sensors (16) are mounted in the fluid flow to monitor a sensed area (22), with each sensor including electrical means in the form of a fluid identifier probe and temperature means in the form of a thermal fluid velocity heat loss sensor. An electronic circuit is present, the electronic circuit forming a resonant circuit (54) with the fluid identifier probe. A processor (24) is used to calculate the proportions of fluids present in the sensed area from the electrical property and the flow rate from the temperature differential. Spot measurements are achieved by making the sensed area substantially smaller than a cross-sectional area of the conduit.
A differential pressure-operated blanking completion tool for use at a Y- Block with an electrical submergible pump (ESP) in oil or other wells. The tool has a body having an inlet and first and second outlets, the outlets being arranged in parallel and opposite the inlet; a support member located between the outlets; a sealing element mounted on the support member and rotatable with respect to the support member, the element including a substantially spherical surface; and wherein the support member is pivoted between the outlets to bring a fresh sealing surface into contact with either outlet and thereby selectively seal the respective outlet and prevent fluid flow therethrough.
A differential pressure-operated blanking completion tool for use at a Y- Block with an electrical submergible pump (ESP) in oil or other wells. The tool has a body having an inlet and first and second outlets, the outlets being arranged in parallel and opposite the inlet; a support member located between the outlets; a sealing element mounted on the support member and rotatable with respect to the support member, the element including a substantially spherical surface; and wherein the support member is pivoted between the outlets to bring a fresh sealing surface into contact with either outlet and thereby selectively seal the respective outlet and prevent fluid flow therethrough.
A data communications system and method for transmitting data over a string between a surface location and a sub-surface location in a well bore in which a load varying device at the sub-surface varies the mechanical load on the string to be indicative of the data and a load measuring apparatus at surface monitors the mechanical load on the string and decodes the data. Data transmission is described from a pump assembly through a sucker rod string. Embodiments of load varying devices using electrical generators, friction rollers and hydraulic and pneumatic brakes 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
E21B 47/16 - 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 le long du train de tiges ou du tubage
E21B 47/00 - Relevés dans les trous de forage ou dans les puits
E21B 43/12 - Procédés ou appareils pour commander l'écoulement du fluide extrait vers ou dans les puits
38.
MULTI-COMPONENT FLUID DETERMINATION IN A WELL BORE
A fluid measurement system and method for determining component mixtures flowing in a conduit such as an oil well. The system includes a sensor wire (24) for location in a well bore (12); a signal generator (68) for injecting a high frequency signal along the wire (24); a data acquisition unit (72) to record first reflected signals received from the wire; a system criteria unit to maintain a data set relevant to the system, and a processor unit (66) operable to act upon the first reflected signals and the data set to establish an output indicative of component fluid within the well bore from which the mixture of fluids flowing within the well bore can be determined. An iterative process can be used with waveguide and probabilistic models.
A fluid measurement system (10, 110, 210) and method of fluid mix determination over a sampling length (25) in a well bore (12). A pulse generator is run in the well bore from which is suspended a cable (24) with two conductors having a length equal to the sampling length. A high frequency pulse is injected along the cable and from the detected response average propagation velocities over the various reflections are used to determine the mixture of fluids. Embodiments are described which improve the determination such as using a cable with sections of alternating impedance, helically wound cable, providing multiple signal generators, incorporating a mathematical model, analyzing the analog signal response, providing a reference cable and incorporating an optical distributed temperature sensor.
G01V 3/18 - 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
E21B 47/10 - Localisation des fuites, intrusions ou mouvements du fluide
E21B 47/00 - Relevés dans les trous de forage ou dans les puits
E21B 49/08 - Prélèvement d'échantillons de fluides ou test des fluides dans les trous de forage ou dans les puits
A gauge system and method for monitoring well pressure at temperatures in excess of 300° C. used in permanent monitoring of oil and gas wellbores. The gauge system includes an analogue output transducer and a long cable which is an extruded mineral insulated multi-core cable with a seam welded corrosion resistant metal outer sheath. The transducer is enclosed in a pressure tight corrosion resistant housing and the housing is pressure sealed to the metal outer sheath. The method includes applying signal conditioning and processing to the measurements to compensate for characteristics of the transducer, the cable and the environment and thereby provide continuous monitoring of the wellbore.
G01L 7/00 - Mesure de la pression permanente ou quasi permanente d’un fluide ou d’un matériau solide fluent par des éléments mécaniques ou hydrauliques sensibles à la pression
E21B 47/06 - Mesure de la température ou de la pression
G01L 19/00 - MESURE DES FORCES, DES CONTRAINTES, DES COUPLES, DU TRAVAIL, DE LA PUISSANCE MÉCANIQUE, DU RENDEMENT MÉCANIQUE OU DE LA PRESSION DES FLUIDES - Détails ou accessoires des appareils pour la mesure de la pression permanente ou quasi permanente d'un milieu fluent dans la mesure où ces détails ou accessoires ne sont pas particuliers à des types particuliers de manomètres
A three phase power system provided with a data communications system and associated method of data transmission for transmitting data over a three phase power system between a surface and a sub-surface location for an arrangement such as an oil field electrical submersible pump, the data communications system comprising a cabled connection from a surface system to a sub- surface system; a power module coupled to the cabled connection via a tuned circuit tuned to a first frequency, a data signal module coupled to the cabled connection via a tuned circuit tuned to a second frequency, independently of the coupled power module so as to minimise interference between the power signal module and data signal module during operation.
A data communications system and associated method of data transmission for transmitting data over a three phase power system between a surface and a sub-surface location for an arrangement such as an oil field electrical submersible pump, on each of the three conductors of a three phase cabled connection with an isolation mechanism operable to isolate any given conductor when a fault associated with that conductor is detected. With the system providing a separate AC signal and data transfer on each conductor isolation can be achieved whilst enabling continued operation.
A method of high frequency data transmission for transmitting data over a three phase power system between a surface and a subsurface location, method using a first data transmit frequency and a second data transmit frequency, the data transmit frequencies being numerically distinct to each other and the data is transmitted on at least the second transmit frequency with a time delay between transmissions at each of the transmit frequencies to provide an uncorrupted data signal without interference. The invention finds specific application monitoring down hole equipment such as an electrical submersible pump in a wellbore.
A system and method for transmitting data over a three phase power system between a surface and a sub-surface location. A first power supply providing a first AC power signal and a second power supply providing a second AC power signal are at the surface. A first powered module and a second powered module which provides a data communications signal are at the sub-surface. A cable connection is provided between the surface and the sub-surface to transmit the power and data communication signals. The data communications signal provides an indication of power applied to the second powered module and a power signal is varied in response to the applied power. The invention finds specific application monitoring down hole equipment such as an electrical submersible pump in a wellbore.
A system and method for transmitting data over a three phase power system between a surface and a sub-surface location. A first power supply providing a first AC power signal and a second power supply providing a second AC power signal are at the surface. A first powered module and a second powered module which provides a data communications signal are at the sub-surface. A cable connection is provided between the surface and the sub-surface to transmit the power and data communication signals. The data communications signal provides an indication of power applied to the second powered module and a power signal is varied in response to the applied power. The invention finds specific application monitoring down hole equipment such as an electrical submersible pump in a wellbore.
A three phase power system provided with a data communications system and associated method of data transmission for transmitting data over a three phase power system between a surface and a sub-surface location for an arrangement such as an oil field electrical submersible pump, the data communications system comprising a cabled connection from a surface system to a sub- surface system; a power module coupled to the cabled connection via a tuned circuit tuned to a first frequency, a data signal module coupled to the cabled connection via a tuned circuit tuned to a second frequency, independently of the coupled power module so as to minimise interference between the power signal module and data signal module during operation.
A data communications system and associated method of data transmission for transmitting data over a three phase power system between a surface and a sub-surface location for an arrangement such as an oil field electrical submersible pump, on each of the three conductors of a three phase cabled connection with an isolation mechanism operable to isolate any given conductor when a fault associated with that conductor is detected. With the system providing a separate AC signal and data transfer on each conductor isolation can be achieved whilst enabling continued operation.
A fluid measurement system and method for determining distributed measurement of a fluid type and a fluid velocity in a wellbore, pipeline or other conduit in which fluid is moving. Measurement is made by immersing one or more cables having sequential sampling sections in the fluid and monitoring a cooling effect across a cable on the sampling sections and the response to injection of a high frequency pulse each sampling section. A probabilistic model is then used to determine the distributed velocity and fluid types along the conduit.
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
G01N 25/18 - Recherche ou analyse des matériaux par l'utilisation de moyens thermiques en recherchant la conductivité thermique
E21B 47/00 - Relevés dans les trous de forage ou dans les puits
E21B 47/10 - Localisation des fuites, intrusions ou mouvements du fluide
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 25/00 - Test ou étalonnage des appareils pour la mesure du volume, du débit volumétrique ou du niveau des liquides, ou des appareils pour compter par volume
G01N 27/02 - Recherche ou analyse des matériaux par l'emploi de moyens électriques, électrochimiques ou magnétiques en recherchant l'impédance
G01D 5/26 - Moyens mécaniques pour le transfert de la grandeur de sortie d'un organe sensible; Moyens pour convertir la grandeur de sortie d'un organe sensible en une autre variable, lorsque la forme ou la nature de l'organe sensible n'imposent pas un moyen de conversion déterminé; Transducteurs non spécialement adaptés à une variable particulière utilisant des moyens optiques, c. à d. utilisant de la lumière infrarouge, visible ou ultraviolette
G01K 11/32 - Mesure de la température basée sur les variations physiques ou chimiques, n'entrant pas dans les groupes , , ou utilisant des changements dans la transmittance, la diffusion ou la luminescence dans les fibres optiques
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
G01R 27/26 - Mesure de l'inductance ou de la capacitance; Mesure du facteur de qualité, p.ex. en utilisant la méthode par résonance; Mesure de facteur de pertes; Mesure des constantes diélectriques
A fluid measurement system (10, 110, 210) and method of fluid mix determination over a sampling length (25) in a well bore (12). A pulse generator is run in the well bore from which is suspended a cable (24) with two conductors having a length equal to the sampling length. A high frequency pulse is injected along the cable and from the detected response average propagation velocities over the various reflections are used to determine the mixture of fluids. Embodiments are described which improve the determination such as using a cable with sections of alternating impedance, helically wound cable, providing multiple signal generators, incorporating a mathematical model, analysing the analogue signal response, providing a reference cable and incorporating an optical distributed temperature sensor.
An energy storage system is disclosed. The energy storage system comprises an energy storage device configured to operate above ambient temperature, and a thermal insulator at least partially surrounding the energy storage device, wherein heat losses from one or more other devices are received within the thermal insulator to provide heat energy to the energy storage device. Utilizing heat losses from one or more other devices, such as associated electronic components, enables the energy storage device to be maintained at its elevated operational temperature for longer providing extended battery life. In the application of wireline logging, this results in more data log available per trip in a well.
H01M 8/04 - Dispositions auxiliaires, p.ex. pour la commande de la pression ou pour la circulation des fluides
E21B 41/00 - Matériel ou accessoires non couverts par les groupes
H01M 6/36 - PROCÉDÉS OU MOYENS POUR LA CONVERSION DIRECTE DE L'ÉNERGIE CHIMIQUE EN ÉNERGIE ÉLECTRIQUE, p.ex. BATTERIES Éléments primaires; Leur fabrication Éléments à action différée contenant un électrolyte et rendus opérationnels par des moyens physiques, p.ex. éléments thermiques
G01V 11/00 - Prospection ou détection par des méthodes combinant des techniques spécifiées dans les groupes
H01M 14/00 - Générateurs électrochimiques de courant ou de tension non prévus dans les groupes ; Leur fabrication
H01M 10/653 - Moyens de commande de la température associés de façon structurelle avec les éléments caractérisés par des matériaux électriquement isolants ou thermiquement conducteurs
H01M 10/667 - Relations d'échange de chaleur entre les éléments et d'autres systèmes, p.ex. chauffage central ou piles à combustibles le système étant un composant électronique, p.ex. un UCT, un inverseur ou un condensateur
H01M 10/658 - Moyens de commande de la température associés de façon structurelle avec les éléments par isolation ou protection thermique
H01M 10/39 - Accumulateurs non prévus dans les groupes fonctionnant à haute température
H01M 6/34 - PROCÉDÉS OU MOYENS POUR LA CONVERSION DIRECTE DE L'ÉNERGIE CHIMIQUE EN ÉNERGIE ÉLECTRIQUE, p.ex. BATTERIES Éléments primaires; Leur fabrication Éléments à action différée activés par une addition externe d'électrolyte ou de composants d'un électrolyte Éléments à immersion, p.ex. éléments à eau de mer
An energy storage system is disclosed. The energy storage system comprises an energy storage device arranged to operate above ambient temperature; a thermal insulator at least partially surrounding the energy storage device; and wherein heat losses from one or more other devices are received within the thermal insulator to provide heat energy to the energy storage device. Utilising heat losses from one or more other devices, such as associated electronic components, enables the energy storage device to be maintained at its elevated operational temperature for longer providing extended battery life. In the application of wireline logging, this results in more data log available per trip in a well.
H01M 10/659 - Moyens de commande de la température associés de façon structurelle avec les éléments par stockage de la chaleur ou chaleur tampon, p.ex. capacité calorifique, changements ou transitions de phase liquide-solide
F28D 20/00 - Appareils ou ensembles fonctionnels d'accumulation de chaleur en général; Appareils échangeurs de chaleur de régénération non couverts par les groupes ou
H01M 8/14 - PROCÉDÉS OU MOYENS POUR LA CONVERSION DIRECTE DE L'ÉNERGIE CHIMIQUE EN ÉNERGIE ÉLECTRIQUE, p.ex. BATTERIES Éléments à combustible; Leur fabrication Éléments à combustible avec électrolytes fondus
H01M 10/39 - Accumulateurs non prévus dans les groupes fonctionnant à haute température
F25B 27/02 - Machines, installations ou systèmes utilisant des sources d'énergie particulières utilisant la chaleur perdue, p.ex. chaleur dégagée par des moteurs à combustion interne
H01G 9/00 - Condensateurs électrolytiques, redresseurs électrolytiques, détecteurs électrolytiques, dispositifs de commutation électrolytiques, dispositifs électrolytiques photosensibles ou sensibles à la température; Procédés pour leur fabrication
52.
Method and apparatus for measuring borehole mud resistivity
Apparatuses, methods for manufacturing an apparatus and methods for measuring a fluid resistivity are provided. An apparatus for measuring a fluid resistivity includes a fluid column defining structure, two current injecting electrodes, voltage measurement electrodes, and two additional electrodes. The fluid column defining structure is configured to allow a fluid, whose resistivity is to be measured, to fill a fluid column inside the fluid column defining structure. The two current injecting electrodes are configured to inject a known current into the fluid column. The voltage measurement electrodes are configured to measure a voltage across a measurement column included in the fluid column. The two additional electrodes disposed inside the fluid column defining structure, outside of the positions of the two current injecting electrodes in the longitudinal direction are electrically connected to each other.
G01V 3/18 - 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
A load cell for a downhole load measuring tool is provided. The load cell comprises a plurality of strain gauges arranged in a balanced array, wherein the array of strain gauges is provided in fluid which, in use, is at substantially the same pressure as the surrounding downhole fluid.
G01L 1/22 - Mesure des forces ou des contraintes, en général en faisant usage des cellules électrocinétiques, c. à d. des cellules contenant un liquide, dans lesquelles un potentiel électrique est produit ou modifié par l'application d'une contrainte en utilisant des jauges de contrainte à résistance
Presented are systems and methods for dampening vibrations transmitted to a sensor assembly based on well drilling operations. Vibration isolators are distributed around a sensor assembly and retained in their desired location. The sensor assembly and retained vibration isolators are inserted in a shrinkable thin-walled tube and the thin-walled tube is shrunk to constrict the inner surface of the thin-walled tube, and the retained vibration isolators against the outer surface of the sensor assembly. Additionally, the constricted thin-walled tube restrains a wiring harness associated with the sensor assembly in a wire well traversing the axial direction of the sensor assembly.
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
55.
Canted helix collapsible flowmeter and method of measuring a fluid flow
Flowmeters and methods of measuring a fluid flow or manufacturing flowmeters are presented. A flowmeter has a tool body and one or more spinner arms configured to extend with a first end away from the tool body and a second end joined to the tool body, when deployed to measure a fluid flow. Each spinner arm includes a helical blade configured to rotate due to a fluid flowing substantially parallel to a longitudinal axis of the tool body, around a rotation axis between the first end and the second end.
G01F 1/28 - 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 utilisant des effets mécaniques par détection des effets dynamiques de l’écoulement par débitmètre à force d'entraînement, p.ex. du type à palette ou à poussée
G01F 1/05 - 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 utilisant des effets mécaniques
E21B 47/10 - Localisation des fuites, intrusions ou mouvements du fluide
56.
Multifunction downhole release tool mechanism with lost motion
Presented is a system and method for disconnecting a plurality of wireline tools from a string of wireline tools while maintaining operation of the wireline tools remaining with the string of wireline tools. The disconnection is non-destructive and allows a reconnection of the disconnected tools after retrieval from the well. The system also enables testing of the disconnection mechanism before deploying the wireline tool string into the well.
E21B 23/14 - Appareils pour déplacer, mettre en place, verrouiller, libérer ou retirer, les outils, les packers ou autres éléments dans les trous de forage pour déplacer un câble ou un outil manoeuvré par câble, p.ex. pour les opérations de diagraphie ou de perforation dans les puits déviés
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
57.
MULTIFUNCTION DOWNHOLE RELEASE TOOL MECHANISM WITH LOST MOTION
Presented is a system and method for disconnecting a plurality of wireline tools from a string of wireline tools while maintaining operation of the wireline tools remaining with the string of wireline tools. The disconnection is non-destructive and allows a reconnection of the disconnected tools after retrieval from the well. The system also enables testing of the disconnection mechanism before deploying the wireline tool string into the well.
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
A gauge system and method for monitoring well pressure at temperatures in excess of 300° C used in permanent monitoring of oil and gas wellbores. The gauge system includes an analogue output transducer and a long cable which is an extruded mineral insulated multi-core cable with a seam welded corrosion resistant metal outer sheath. The transducer is enclosed in a pressure tight corrosion resistant housing and the housing is pressure sealed to the metal outer sheath. The method includes applying signal conditioning and processing to the measurements to compensate for characteristics of the transducer, the cable and the environment and thereby provide continuous monitoring of the wellbore.
Device and method for performing distributed fluid velocity measurement. An elongate device comprising along its length, a heated core (200), at least one outer layer (240) around the core, the outside surface of the outer layer (240) defining an outside surface of the device, and a distributed temperature sensor (230) located between the heated core (200) and the outside surface of the device. The method immerses the device in one or more fluids along its length, measures the ambient temperature of the fluids at points along it's length, heats the heated core (200) for a predetermined heating period and measures the temperature again at the same points. Using pre-installed knowledge the device can obtain distributed and/or point fluid velocity measurements.
E21B 47/06 - Mesure de la température ou de la pression
E21B 47/10 - Localisation des fuites, intrusions ou mouvements du fluide
G01P 5/10 - 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 des variables thermiques
60.
IMPROVED METHOD OF DETERMINING A PHASE CHANGE IN A RESERVOIR
Method and apparatus to determine the relative and/or absolute position of a phase change in a fluid reservoir comprising hydrocarbons by providing a first wire in a borehole within the reservoir; providing a reference system to the first wire in the borehole; transmitting an electromagnetic signal through the first wire; detecting a detected response to the electromagnetic signal from the first wire; generating a reference response from the reference system; using the reference response to correct the detected response; and determining the phase change position using data from the corrected response. Reference systems in the form of a second wire; a transmission line and an electronic equivalent circuit simulation model; and an electrical model of the first wire and borehole, are described.
G01V 3/30 - 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 d'ondes électromagnétiques
A pressure balancing device for a transducer is provided. The pressure balancing device comprises: a pressure transmission device having a cross-sectional area and arranged, in use, to be exposed to a fluid; and a fluid chamber having a hollow shaft, the fluid chamber being arranged to be acted on by the pressure transmission device; wherein the cross-sectional area of the hollow shaft is less than the cross-sectional area of the pressure transmission device.
A pressure balancing device for a transducer is described. The pressure balancing device has a pressure transmission device such as a piston, bladder, diaphragm or bellows for example arranged, in use, to be exposed to a fluid such as a downhole well fluid. A fluid chamber having a hollow shaft is arranged to be acted on by the pressure transmission device. The cross-sectional area of the hollow shaft is arranged to be less than that of the pressure transmission device to reduce resistance forces. The hollow shaft may be a load transmission shaft which may be connected to a load sensor.
G01D 3/028 - Dispositions pour la mesure prévues pour les objets particuliers indiqués dans les sous-groupes du présent groupe pour atténuer les influences indésirables, p.ex. température, pression
E21B 47/06 - Mesure de la température ou de la pression
G01L 1/26 - Mesures auxiliaires prises, ou dispositifs utilisés en liaison avec le mesurage des forces, p.ex. pour empêcher l'influence des composantes transversales de la force, pour empêcher la surcharge
G01L 19/06 - Moyens pour empêcher la surcharge ou l'influence délétère du milieu à mesurer sur le dispositif de mesure ou vice versa
A load cell for a downhole load measuring tool is described. The load cell comprises a plurality of strain gauges arranged in a balanced array such as a Wheatstone Bridge. The array of strain gauges is provided in fluid which, in use, is at the same pressure as the surrounding downhole fluid. As the balanced array is at the same pressure as the surrounding fluid, there is no requirement to pressure calibrate the load cell. The load cell is preferably arranged to measure shear strain across the load cell.
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
An apparatus for determining the concentration of a conductive fluid present in a fluid filled bore hole is described. Such apparatus are known as water hold-up meters and are frequently used in oil, gas and water filled bore holes. In bore hole applications, data bandwidth between a down hole device and the surface can be limited, while determining water hold-up based on down hole measurements can be data intensive. A technique is proposed for calculating the water hold up that requires less data to be transmitted between the down hole device and the surface.
G01V 3/18 - 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
G01V 3/34 - Transmission de données aux appareils d'enregistrement ou de traitement; Enregistrement de données
G01V 3/38 - Traitement de données, p.ex. pour l'analyse, pour l'interprétation ou pour la correction
G06F 3/00 - Dispositions d'entrée pour le transfert de données destinées à être traitées sous une forme maniable par le calculateur; Dispositions de sortie pour le transfert de données de l'unité de traitement à l'unité de sortie, p.ex. dispositions d'interface
E21B 47/10 - Localisation des fuites, intrusions ou mouvements du fluide
G01N 27/07 - Structure des récipients de mesure; Electrodes pour ces récipients
A method of transmitting power and/or data between downhole equipment and a surface through a circuit including an alternating current (AC) powered motor and its associated power cable for powering the downhole equipment is disclosed, where the data is transmitted at frequencies outside the normal operating ranges that are thought acceptable. Associated circuitry and apparatus for performing the method are disclosed.
G01V 3/00 - Prospection ou détection électrique ou magnétique; Mesure des caractéristiques du champ magnétique de la terre, p.ex. de la déclinaison ou de la déviation
A modulator is disclosed for creating a pressure pulse in a fluid-filled well. The modulator comprises a tool body on which a plurality of extendable arms are mounted. The arms may be retracted into a stowed position substantially adjacent the tool body, or may be extended to meet the wall of the borehole. The arms are preferably resilient bowsprings that may be flexed outwards from the tool by means of an actuator pushing on at least one end of the springs. A flexible valve sleeve or bag is suspended between the arms and cooperates with a valve mounted adjacent the sleeve on the tool body. The valve sleeve creates a fluid-flow path through the valve, and in operation, the valve closes one end of the valve sleeve to create the pressure pulse. Sealing of the valve sleeve against the wall of the well is a result of the fluid pressure inflating the sleeve against the well wall. As a result, sealing takes place over an extended area of the bag and is dynamically responsive to changes in fluid flow or pressure.
A modulator is disclosed for creating a pressure pulse in a fluid-filled well. The modulator comprises a tool body on which a plurality of extendable arms (6) are mounted. The arms (6) may be retracted into a stowed position substantially adjacent the tool body, or may be extended to meet the wall of the borehole (2). The arms (6) are preferably resilient bowsprings that may be flexed outwards from the tool by means of an actuator pushing on at least one end of the springs. A flexible valve sleeve (5) or bag is suspended between the arms (6) and cooperates with a valve (4) mounted adjacent the sleeve on the tool body. The valve sleeve (5) creates a fluid-flow path through the valve (4), and in operation, the valve (4) closes one end of the valve sleeve (5) to create the pressure pulse. Sealing of the valve sleeve against the wall of the well is a result of the fluid pressure inflating the sleeve against the well wall. As a result, sealing takes place over an extended area of the bag and is dynamically responsive to changes in fluid flow or pressure.
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
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
68.
Method and apparatus for determining the permeability of earth formations
A method and apparatus for determining the fluid permeability of an earth formation is described. An instrument comprising an acoustic source and acoustic and electrokinetic sensors is located in a borehole at a site of interest. The acoustic source is fired and the resulting variations in pressure and electric field generated are measured and recorded. The Biot equation, and an equation for the streaming potential coupled to fluid displacement terms, is solved using finite element analysis to give an expected pressure waveform and electrokinetic waveform based on estimated earth formation properties. By comparison of the measured waveforms and those calculated from the equations, the actual permeability of the earth formation can be deduced.
G01V 1/40 - Séismologie; Prospection ou détection sismique ou acoustique spécialement adaptées au carottage
G01V 3/18 - 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
G01V 3/00 - Prospection ou détection électrique ou magnétique; Mesure des caractéristiques du champ magnétique de la terre, p.ex. de la déclinaison ou de la déviation
G01V 9/00 - Prospection ou détection par des procédés non prévus dans les groupes
E21B 47/00 - Relevés dans les trous de forage ou dans les puits
69.
APPARATUS FOR DETERMINING THE CONCENTRATION OF A CONDUCTIVE FLUID PRESENT IN A FLUID FILLED BOREHOLE
An apparatus for determining the concentration of a conductive fluid present in a fluid filled bore hole is described. Such apparatus are known as water hold-up meters and are frequently used in oil, gas and water filled bore holes. In bore hole applications, data bandwidth between a down hole device and the surface can be limited, while determining water hold-up based on down hole measurements can be data intensive. A technique is proposed for calculating the water hold up that requires less data to be transmitted between the down hole device and the surface.
A method of transmitting power and/or data between downhole equipment and a surface through a circuit including an alternating current (AC) powered motor and itsassociated power cable for powering the downhole equipmentis disclosed, where the data is transmitted atfrequencies outside the normal operating ranges that are thought acceptable. Associated circuitry and apparatus for performing the method are disclosed.
A method of transmitting power and/or data between downhole equipment and a surface through a circuit including an alternating current (AC) powered motor and itsassociated power cable for powering the downhole equipmentis disclosed, where the data is transmitted atfrequencies outside the normal operating ranges that are thought acceptable. Associated circuitry and apparatus for performing the method are disclosed.
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
72.
IMPROVEMENTS IN OR RELATING TO ESP COMPLETION SYSTEMS
A completion system (34) for use with electrical submergible pumps (ESP) has an assembly (36) including a tubular body (41), incorporating an auto-blanking valve (50) with radial outlets (58) in a retrievable insert (38) alignable with radial ports (75) in an inner moveable valve sleeve (76) surrounding part of a throughbore (46), wherein, dependent upon fluid flow pressure acting upon a valve poppet (81) on the sleeve, radial outlets (58) of the shunt valve can be aligned with the radial outlets (45) of the body such that if the ESP is switched off, the shunt valve operates to pass fluid from the production tubing out of the body into the well bore.
E21B 43/12 - Procédés ou appareils pour commander l'écoulement du fluide extrait vers ou dans les puits
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 23/14 - Appareils pour déplacer, mettre en place, verrouiller, libérer ou retirer, les outils, les packers ou autres éléments dans les trous de forage pour déplacer un câble ou un outil manoeuvré par câble, p.ex. pour les opérations de diagraphie ou de perforation dans les puits déviés
Completion system (120) has an auto-flow crossover assembly (10), with a plurality of selectable electrical submergible pumps (ESP) (114, 116), e.g. As a dual primary and back-up ESP system, the assembly including a tubular body (38), within which is an annulus (44) housing a shunt valve (50) with radial outlets (58) alignable with radial inner ports (75) in an inner moveable valve sleeve (76) surrounding part of a throughbore (46), wherein, dependent upon pump selection, and fluid pressure acting upon a valve poppet (81) on the sleeve to lift same from a valve seat (60), the radial ports (58, 75) will be aligned or not permitting alternative flow path configurations in which even with both pumps turned off at least one pump is protected from fouling with detritus, and during switch over between ESPs the auto-crossover system protects the 'off' pump.
E21B 43/12 - Procédés ou appareils pour commander l'écoulement du fluide extrait vers ou dans les puits
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
74.
METHOD AND APPARATUS FOR DETERMINING THE PERMEABILITY OF EARTH FORMATIONS
A Method and apparatus for determining the fluid permeability of an earth formation is described. An instrument (6) comprising an acoustic source (14, 16) and acoustic (18) and electrokinetic sensors (20) is located in a borehole (4) at a site of interest. The acoustic source is fired and the resulting variations in pressure and electric field generated are measured and recorded. The Biot equation, and an equation for the streaming potential coupled to fluid displacement terms, is solved using finite element analysis to give an expected pressure waveform and electrokinetic waveform based on estimated earth formation properties. By comparison of the measured waveforms and those calculated from the equations, the actual permeability of the earth formation can be deduced.
09 - Appareils et instruments scientifiques et électriques
37 - Services de construction; extraction minière; installation et réparation
Produits et services
Machines and machine tools for use in the construction, maintenance, repair and inspection of oil and gas wells and pipelines; centralisers, knuckle joints and swivels for use in the construction, maintenance, repair and inspection of oil and gas wells and pipelines. Scientific, surveying, electric, measuring, signaling and checking apparatus and instruments for use in the construction, maintenance, repair and inspection of oil and gas wells and pipelines; cameras, video apparatus, telemetry apparatus, data acquisition software, data processing equipment and logging apparatus including pressure, temperature, fluid density, flow rate and radiation measuring apparatus, all for use in the construction, maintenance, repair and inspection of oil and gas wells and pipelines. Services relating to the construction, maintenance, repair and inspection of oil and gas wells and pipelines; rental of apparatus relating to the construction, maintenance, repair and inspection of oil and gas wells and pipelines.
09 - Appareils et instruments scientifiques et électriques
Produits et services
Computer hardware and software for use in recording and analyzing data from wells; electronic apparatus for recording and analyzing data from wells, namely, video cameras, calipers, and electronic sensors
