Abstract: Aspects of the present disclosure relate to a valve control system. The valve control system may include a transmitter and a plurality of valve controllers that each have a receiver. Each valve controller of the plurality of valve controllers is configured to control a respective valve of a plurality of valves. In some embodiments, the transmitter may transmit an electromagnetic signal that includes an encoded message to be decoded by a processor of each valve controller of the plurality of valve controllers. In some examples, the encoded message may include a synchronization message, an instruction message, an error correction message, an encryption message, or any combination thereof that enables the plurality of valve controllers to adjust the plurality of valves to respective target positions.

Abstract: A centralizer operable to connect with and centralize a downhole tool within a tubular string within a wellbore and to facilitate reception of electromagnetic signals transmitted through the Earth. The centralizer has a body, a first contacting member electrically connected to the body and extending radially away from the body such that the first contacting member contacts an inner surface of the tubular string to electrically connect the tubular string to the body, and a second contacting member electrically insulated from the body and extending radially away from the body such that the second contacting member contacts the inner surface of the tubular string to centralize at least a portion of the body within the tubular string.

Abstract: A centralizer operable to connect with and centralize a downhole tool within a tubular string within a wellbore and to facilitate reception of electromagnetic signals transmitted through the Earth. The centralizer has a body, a first contacting member electrically connected to the body and extending radially away from the body such that the first contacting member contacts an inner surface of the tubular string to electrically connect the tubular string to the body, and a second contacting member electrically insulated from the body and extending radially away from the body such that the second contacting member contacts the inner surface of the tubular string to centralize at least a portion of the body within the tubular string.

Abstract: Aspects of the present disclosure relate to a valve control system. The valve control system may include a transmitter and a plurality of valve controllers that each have a receiver. Each valve controller of the plurality of valve controllers is configured to control a respective valve of a plurality of valves. In some embodiments, the transmitter may transmit an electromagnetic signal that includes an encoded message to be decoded by a processor of each valve controller of the plurality of valve controllers. In some examples, the encoded message may include a synchronization message, an instruction message, an error correction message, an encryption message, or any combination thereof that enables the plurality of valve controllers to adjust the plurality of valves to respective target positions.

Abstract: The disclosure relates to a method for monitoring the performances of a cable for carrying a downhole assembly in a wellbore, the cable comprising at least a conductive core and an insulating outer layer, comprising: measuring a downlink telemetry signal, transmitted from a surface control module to the downhole assembly, and/or an uplink telemetry signal, transmitted from the downhole assembly to the surface control module; representing the downlink and/or uplink telemetry signals as a function of a parameter representative of a depth of the downhole assembly, analyzing a variation of the telemetry signal as a function of the parameter in view of an electrical model of an installation including the cable and the downhole assembly disposed in the wellbore, determining location of anomalies of the cable based on the analysis.

Abstract: Apparatus and methods for triggering a downhole tool. The tool string may have an electrical power source and a trigger tool that may be configured for receiving electrical power from the electrical power source and outputting different forms of electrical power each being different from the form of electrical power received from the electrical power source. Each form of electrical power output by the trigger tool may initiate operation of a corresponding one of different electro-mechanical tools connectable within the downhole tool string. A trigger command is transmitted from the surface equipment to the trigger tool to cause the trigger tool to output electrical power having a form corresponding to the electro-mechanical tool connected within the tool string to thereby initiate operation of such electro-mechanical tool.

Abstract: The disclosure relates to a method for monitoring the performances of a cable for carrying a downhole assembly in a wellbore, the cable comprising at least a conductive core and an insulating outer layer, comprising: measuring a downlink telemetry signal, transmitted from a surface control module to the downhole assembly, and/or an uplink telemetry signal, transmitted from the downhole assembly to the surface control module; representing the downlink and/or uplink telemetry signals as a function of a parameter representative of a depth of the downhole assembly, analyzing a variation of the telemetry signal as a function of the parameter in view of an electrical model of an installation including the cable and the downhole assembly disposed in the wellbore, determining location of anomalies of the cable based on the analysis.

Abstract: An installation for intervention in a well, comprises a lower assembly comprising a neutron generator and a power source electrically connected to the neutron generator; a surface assembly comprising one or more safety devices, each safety device being either in a safe state or an unsafe state; and a communication module that connects the lower and surface assemblies. The surface assembly also comprises a surface transmitting device for transmitting data to the downhole assembly via the communication module including a first transmitter for transmitting an activating command, where the first transmitter transmits the activating command only if each of the safety device is in a safe state, and a second transmitter for transmitting a stopping command, where the second transmitter transmits the stopping command if one of the safety device is in an unsafe state.

Abstract: An installation for intervention in a well, comprises a lower assembly comprising a neutron generator and a power source electrically connected to the neutron generator; a surface assembly comprising one or more safety devices, each safety device being either in a safe state or an unsafe state; and a communication module that connects the lower and surface assemblies. The surface assembly also comprises a surface transmitting device for transmitting data to the downhole assembly via the communication module including a first transmitter for transmitting an activating command, where the first transmitter transmits the activating command only if each of the safety device is in a safe state, and a second transmitter for transmitting a stopping command, where the second transmitter transmits the stopping command if one of the safety device is in an unsafe state.

Abstract: A method for conveying an interventional tool downhole in a substantially self-piloting fashion. The method includes moving the tool in the well while using a communicative conveyance line coupled to a winch at the oilfield surface. Thus, real-time readings regarding downhole tool speed, line tension, etc. may be analyzed at surface and utilized to adjust the moving of the tool in an ongoing feedback loop. As a result, the adjustments are made based on true circumstances downhole as opposed to surface-based readings which may otherwise be less accurate. Therefore, efficiency of the operations may be maximized, operator time freed and the likelihood of catastrophic line based failures reduced.

Abstract: This device includes a cable (32) having a smooth outer surface (40). The cable (32) includes a central conductor (42) and an annular outer sheath (44). The outer sheath (44) includes a polymer matrix (56) and mechanical reinforcing fibers (58, 60) embedded in the polymer matrix (56). The central conductor (42) includes a solid cylindrical metal core (48) having a smooth outer surface (52), a breaking strength greater than 300 daN and a lineic electrical resistance greater than 30 mohms/m.

Abstract: Tension meter (82) for measuring a mechanical tension (F1) along a longitudinal direction (L) between a first element (84) and a second element (80) deployed in a well containing a fluid (50) having a fluid pressure, the tension meter comprising:—a bar (108) comprising a first portion (152), a second portion (154), and a measurement portion (156), and—a hollow member (110) defining a first chamber (169) surrounding the measurement portion, the bar being free to expand within the hollow member under the mechanical tension (F1) to be measured. The measurement portion includes at least one strain gauge (172). The tension meter includes first sealing elements for keeping the first chamber at a first chamber pressure, the measurement portion being subject to a compression force (F2) due to a difference between the fluid pressure and the first chamber pressure.

Abstract: The head (80) comprises an upper portion for attaching and connecting to a cable (32) and a lower attaching portion for electrically connecting to a control and transmission module (82) of a tool to be lowered in the well. The head (80) comprises a hollow outer enclosure (94) and a mechanical connection assembly. The mechanical connection assembly comprises an attaching member (114) and a liner (116) defining an inner lumen (121) to receive the attaching member (114) and the lower end of the cable (32) The connecting head (80) defines a first downhole electrical path (70) able to extend from a lower segment (126) of the cable to a first connector of the control and transmission module (82), the first downhole electrical path (70) being completely electrically insulated from the outer enclosure (94).

Abstract: A device including a lower assembly (30) and a cable (32) for deploying the lower assembly (30) in the well (12). The lower assembly (30) includes a pyrotechnic system (72), and a firing assembly further including a module (86) for controlling a power battery (88) and a power module (150). The control module (86) includes arming means (112; 158) of the power module (150) capable of connecting the power battery (88) to the power module (150) upon receiving an electrical arming signal transmitted through the cable (32). It includes means (114; 160) for triggering the pyrotechnic system (72) capable of connecting the power module (150) to the pyrotechnic system (72), upon receiving a distinct electrical triggering signal posterior to the arming signal.

Abstract: Tension meter (82) for measuring a mechanical tension (F1) along a longitudinal direction (L) between a first element (84) and a second element (80) deployed in a well containing a fluid (50) having a fluid pressure, the tension meter comprising:—a bar (108) comprising a first portion (152), a second portion (154), and a measurement portion (156), and—a hollow member (110) defining a first chamber (169) surrounding the measurement portion, the bar being free to expand within the hollow member under the mechanical tension (F1) to be measured. The measurement portion includes at least one strain gauge (172). The tension meter includes first sealing elements for keeping the first chamber at a first chamber pressure, the measurement portion being subject to a compression force (F2) due to a difference between the fluid pressure and the first chamber pressure.

Abstract: This tool comprises an upper portion and a lower portion able to move relative to each other between a connected position and a completely disconnected position. The tool comprises an immobilization member that can be freed from the upper portion relative to the lower portion, a member for releasing the immobilization member, and a mechanism for moving the release member housed in the tool. The movement mechanism comprises an actuator and a receptor for receiving a control signal.

Abstract: This device includes a cable (32) having a smooth outer surface (40). The cable (32) comprises a central conductor (42) and an annular outer sheath (44). The outer sheath (44) includes a polymer matrix (56) and mechanical reinforcing fibers (58, 60) embedded in the polymer matrix (56). The central conductor (42) comprises a solid cylindrical metal core (48) having a smooth outer surface (52), a breaking strength greater than 300 daN and a lineic electrical resistance greater than 30 mohms/m.

Abstract: A device including a lower assembly (30) and a cable (32) for deploying the lower assembly (30) in the well (12). The lower assembly (30) includes a pyrotechnic system (72), and a firing assembly further including a module (86) for controlling a power battery (88) and a power module (150). The control module (86) includes arming means (112; 158) of the power module (150) capable of connecting the power battery (88) to the power module (150) upon receiving an electrical arming signal transmitted through the cable (32). It includes means (114; 160) for triggering the pyrotechnic system (72) capable of connecting the power module (150) to the pyrotechnic system (72), upon receiving a distinct electrical triggering signal posterior to the arming signal.

Abstract: The head (80) comprises an upper portion for attaching and connecting to a cable (32) and a lower attaching portion for electrically connecting to a control and transmission module (82) of a tool to be lowered in the well. The head (80) comprises a hollow outer enclosure (94) and a mechanical connection assembly. The mechanical connection assembly comprises an attaching member (114) and a liner (116) defining an inner lumen (121) to receive the attaching member (114) and the lower end of the cable (32) The connecting head (80) defines a first downhole electrical path (70) able to extend from a lower segment (126) of the cable to a first connector of the control and transmission module (82), the first downhole electrical path (70) being completely electrically insulated from the outer enclosure (94).

Abstract: This tool comprises an upper portion and a lower portion mounted able to move relative to each other between a connected position and a completely disconnected position. The tool comprises an immobilization member that can be freed from the upper portion relative to the lower portion, a member for releasing the immobilization member, and a mechanism for moving the release member housed in the tool. The movement mechanism comprises an actuator and for a receptor receiving a control signal. The movement means comprises a member for elastic stressing of the release member towards its release position and a retaining member for keeping the release member in an activation position against the stressing member. The actuator is able to release the retaining member after receiving the control signal.