Embodiments herein generally relate to methods and systems for downhole sensing. In at least one example, the system for downhole wireless sensing comprises: a power supply electrically connected to a conductive portion of a well, and configured to provide input electric current through the conductive portion; a wireless sensor unit electrically connected to the conductive portion to receive the input electric current, the wireless sensor unit connecting to an output ground node and configured to transmit an output sensor signal through the output ground node; a ground signal receiver for detecting an electromagnetic signal, travelling through ground, corresponding to the output sensor signal; and at least one processor coupled to the ground signal receiver for receiving the detected output sensor signal.
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
G01D 5/08 - Moyens mécaniques pour le transfert de la grandeur de sortie d'un organe sensibleMoyens 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 déterminéTransducteurs non spécialement adaptés à une variable particulière utilisant des moyens mécaniques réduisant les effets de frottement, p. ex. par application de vibrations
Disclosed are methods and systems for relieving strain of an optical fiber installed in a conduit downhole, wherein the conduit is purged with a purge gas to relieve mechanical strain of the fiber.
Disclosed are methods and systems for relieving strain of an optical fiber installed in a conduit downhole, wherein the conduit is purged with a purge gas to relieve mechanical strain of the fiber.
A system and method for calibrating a distributed temperature sensing (DTS) system having a fiber optic receiver coupled to an optical fiber, includes fiber Bragg gratings (FBGs) integrally formed within the optical fiber, and a processor configured to compute a temperature datum for a location of each FBG based on signals generated by the fiber optic receiver in response to light reflections from the FBG; and adjusting a computed temperature data profile along the optical fiber segment, based on the computed temperature datum for each location of an FBG.
G01K 11/3206 - 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 en des endroits distincts de la fibre, p. ex. utilisant la diffusion de Bragg
5.
DISTRIBUTED TEMPERATURE SENSING SYSTEM WITH FIBER BRAGG GRATINGS
A system and method for calibrating a distributed temperature sensing (DTS) system having a fiber optic receiver coupled to an optical fiber, includes fiber Bragg gratings (FBGs) integrally formed within the optical fiber, and a processor configured to compute a temperature datum for a location of each FBG based on signals generated by the fiber optic receiver in response to light reflections from the FBG; and adjusting a computed temperature data profile along the optical fiber segment, based on the computed temperature datum for each location of an FBG.
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
G01K 11/3206 - 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 en des endroits distincts de la fibre, p. ex. utilisant la diffusion de Bragg
A vibrating wire piezometer pressure sensor system has (a) a vibrating wire connected to a pressure diaphragm; (b) a first electromagnetic coil (EMC) associated with the vibrating wire; (c) a second EMC associated with the vibrating wire; wherein the first EMC and the second EMC are wired in series and in parallel to a signal processor for converting an electrical signal to a pressure measurement.
G01L 9/00 - Mesure de la pression permanente, ou quasi permanente d’un fluide ou d’un matériau solide fluent par des éléments électriques ou magnétiques sensibles à la pressionTransmission ou indication par des moyens électriques ou magnétiques du déplacement des éléments mécaniques sensibles à la pression, utilisés pour mesurer la pression permanente ou quasi permanente d’un fluide ou d’un matériau solide fluent
A vibrating wire piezometer pressure sensor system has (a) a vibrating wire connected to a pressure diaphragm; (b)a first electromagnetic coil (EMC) associated with the vibrating wire; (c) a second EMC associated with the vibrating wire; wherein the first EMC and the second EMC are wired in series and in parallel to a signal processor for converting an electrical signal to a pressure measurement.
G01L 9/00 - Mesure de la pression permanente, ou quasi permanente d’un fluide ou d’un matériau solide fluent par des éléments électriques ou magnétiques sensibles à la pressionTransmission ou indication par des moyens électriques ou magnétiques du déplacement des éléments mécaniques sensibles à la pression, utilisés pour mesurer la pression permanente ou quasi permanente d’un fluide ou d’un matériau solide fluent
ABSTRACTA thermistor cable is fomied from a tubing and a plurality of thermistor conductors bundled within the tubing, wherein each thennistor conductor forms a junction with a shared thermistor conductor to form a thennistor junction, and each thermistor junction is attached to a support cable in a thermistor bundle. The cable is formed by pulling the thermistor bundleinto the tubing.17Date Recue/Date Received 2020-12-02
H10N 10/17 - Dispositifs thermoélectriques comportant une jonction de matériaux différents, c.-à-d. dispositifs présentant l'effet Seebeck ou l'effet Peltier fonctionnant exclusivement par les effets Peltier ou Seebeck caractérisés par la structure ou la configuration de la cellule ou du thermocouple constituant le dispositif
09 - Appareils et instruments scientifiques et électriques
37 - Services de construction; extraction minière; installation et réparation
42 - Services scientifiques, technologiques et industriels, recherche et conception
Produits et services
(1) Downhole instrumentation used for reservoir monitoring in oil and gas, namely software and sensors used to monitor, measure, record and transmit temperature, pressure, flow and strain data. (1) Installation of automated electric flow control valves used for oil and gas wells; Field service work in the oil and gas industry, namely, repair and maintenance of oil and gas drilling equipment.
(2) Remote monitoring of automated electric flow control valves used for oil and gas wells; Engineering consulting services in the filed of oil and gas; Engineering project management in the field of oil and gas; Engineering services for oil and gas analysis and surveying.
09 - Appareils et instruments scientifiques et électriques
37 - Services de construction; extraction minière; installation et réparation
42 - Services scientifiques, technologiques et industriels, recherche et conception
Produits et services
Oil and gas downhole instrumentation used for reservoir monitoring Field service work in the oil and gas industry, namely, repair and maintenance of oil and gas drilling equipment Engineering services in the oil and gas industry
09 - Appareils et instruments scientifiques et électriques
37 - Services de construction; extraction minière; installation et réparation
42 - Services scientifiques, technologiques et industriels, recherche et conception
Produits et services
(1) Downhole instrumentation used for reservoir monitoring in oil and gas, namely software and sensors used to monitor, measure, record and transmit temperature, pressure, flow and strain data. (1) Installation of automated electric flow control valves used for oil and gas wells; Field service work in the oil and gas industry, namely, repair and maintenance of oil and gas drilling equipment.
(2) Remote monitoring of automated electric flow control valves used for oil and gas wells; Engineering consulting services in the filed of oil and gas; Engineering project management in the field of oil and gas; Engineering services for oil and gas analysis and surveying.
A themiocouple cable is formed from a tubing and a plurality of thermocouple conductors bundled within the tubing, wherein each thermocouple conductor forms a junction with a shared thermocouple conductor to form a thermocouple junction, and each themiocouple junction is attached to a support cable in a themiocouple bundle. The cable is fomied by pulling the thermocouple bundle into the tubing.
G01K 7/02 - Mesure de la température basée sur l'utilisation d'éléments électriques ou magnétiques directement sensibles à la chaleur utilisant des éléments thermo-électriques, p. ex. des thermocouples
A thermocouple cable is formed from a tubing and a plurality of thermocouple conductors bundled within the tubing, wherein each thermocouple conductor forms a junction with a shared thermocouple conductor to form a thermocouple junction, and each thermocouple junction is attached to a support cable in a thermocouple bundle. The cable is formed by pulling the thermocouple bundle into the tubing.
G01K 7/02 - Mesure de la température basée sur l'utilisation d'éléments électriques ou magnétiques directement sensibles à la chaleur utilisant des éléments thermo-électriques, p. ex. des thermocouples
H01B 7/00 - Conducteurs ou câbles isolés caractérisés par la forme
H01B 13/22 - GainageBlindageÉcransApplication de couches de protection d'un autre genre
H01B 13/32 - Remplissage ou revêtement avec un matériau imperméable
A method of conveying a fiber optic cable through a conduit having an inside diameter involves connecting an interior pig assembly to a far end of the fiber optic cable, the interior pig assembly having an outside diameter smaller than the conduit inside diameter, and inserting the interior pig assembly into the conduit. To convey the fiber optic cable through the conduit, the interior pig assembly may be ferromagnetic, and an exterior assembly including a magnet outside the conduit may be used to pull the interior pig assembly pig through the conduit. In addition or alternatively, a gas may be injected into the conduit to push the pig assembly through the conduit.
