Abstract: A well system includes an electrical submersible pumping (“ESP”) assembly, a variable speed drive, and a ride through system. The ESP assembly includes a pump for lifting liquid from inside the well and an electric motor for powering the pump. The variable speed drive is outside the well and controls delivery of electricity from a power source to the motor. The ride through system provides backup electricity if there is an interruption of electricity from the power source. The ride through system includes a bank of power modules having stored electrical power. The modules are connected in series and have a combined electrical potential adequate for powering the motor. By selectively disconnecting adjacent modules from one another, the electrical potential from the bank of power modules is reduced to a magnitude that is not hazardous for personnel.

Abstract: A valve for a fluid line of a vehicle has a fluid channel, a spring element and support element with a sealing element. The support element is movably arranged in the fluid channel, the fluid channel being configured to guide a fluid between a valve opening and a fluid line connected to the valve. The spring element is configured to push a sealing element via the support element on a valve seat to close the valve. The support element is configured to separate the fluid channel from the spring element. Furthermore, a valve coupling assembly has a first fluid line connector and a second fluid line connector. The first fluid line connector comprises the valve.

Abstract: A process and/or simulation for providing one or more technical specifications of characteristics of a geothermal energy extraction apparatus for use with a well formed in the ground, the process comprising the steps of identifying one or more physical characteristics of the said well, modelling a plurality of output criteria according to a plurality of possible characteristics of a geothermal energy extraction apparatus and the said one or more physical characteristics of the said well, providing one or more technical specifications of characteristics of a geothermal energy extraction apparatus for use with said well.

Abstract: A torque determination system for use in connection with a pumping system includes a first shaft sensor assembly that produces a first shaft revolution completion signal and a second shaft sensor assembly that produces a second shaft revolution completion signal. The torque determination system includes a processor unit configured to determine the torque produced by the motor based on a shaft twist angle calculated by comparing the first shaft revolution completion signal and the second shaft revolution completion signal.

Abstract: A well system includes an electrical submersible pumping (“ESP”) assembly, a variable speed drive, and a ride through system. The ESP assembly includes a pump for lifting liquid from inside the well and an electric motor for powering the pump. The variable speed drive is outside the well and controls delivery of electricity from a power source to the motor. The ride through system provides backup electricity if there is an interruption of electricity from the power source. The ride through system includes a bank of power modules having stored electrical power. The modules are connected in series and have a combined electrical potential adequate for powering the motor. By selectively disconnecting adjacent modules from one another, the electrical potential from the bank of power modules is reduced to a magnitude that is not hazardous for personnel.

Abstract: A valve coupling assembly has a first fluid line connector coupled to a first fluid line and a second fluid line connector coupled to a second fluid line. In an operational state, the first and second fluid line connectors are engaged to each other for fluid communication between the first and second fluid lines. In a disengaged state, the first and second fluid line connectors are disengaged wherein the first and second fluid lines are disconnected. A first valve arranged in the first fluid line connector is configured to control a fluid flow in the first fluid line. In a closed state of the first valve, the first fluid line is sealed, and, in an open state of the first valve, the first fluid line is open. The second fluid line connector comprises at least one push element mounted to a body of the second fluid line connector.

Abstract: A torque determination system for use in connection with a pumping system includes a first shaft sensor assembly that produces a first shaft revolution completion signal and a second shaft sensor assembly that produces a second shaft revolution completion signal. The torque determination system includes a processor unit configured to determine the torque produced by the motor based on a shaft twist angle calculated by comparing the first shaft revolution completion signal and the second shaft revolution completion signal.

Abstract: A valve for a fluid line of a vehicle has a fluid channel, a spring element and support element with a sealing element. The support element is movably arranged in the fluid channel, the fluid channel being configured to guide a fluid between a valve opening and a fluid line connected to the valve. The spring element is configured to push a sealing element via the support element on a valve seat to close the valve. The support element is configured to separate the fluid channel from the spring element. Furthermore, a valve coupling assembly has a first fluid line connector and a second fluid line connector. The first fluid line connector comprises the valve.

Abstract: A valve coupling assembly has a first fluid line connector with a first fluid line and a second fluid line connector with a second fluid line. In an operational state, the first and second fluid line connector are engaged to each other and the first fluid line and the second fluid line are connected in fluid communication. In a disengaged state, the first fluid line connector and the second fluid line connector are disengaged from each other and the first and second fluid line are disconnected from each other. A first valve is arranged in the first fluid line, the first valve being configured to control a flow of a fluid in the first fluid line. In a closed state of the first valve, the first fluid line is sealed, and, in an open state of the first valve, the first fluid line is open. The second fluid line connector comprises at least one push element mounted to a body of the second fluid line connector.

Abstract: A device for pre-positioning a profile clamp for connecting line end pieces. The device has a bridge element of a profile clamp and a flange element on one of the line end pieces. The bridge element is designed to connect two clamp portions of the profile clamp along a bridge direction. The bridge element has a finger that extends away from the bridge element at least partly transversely to the bridge direction and has a free end portion. The flange element comprises a recess for receiving the free end portion. The recess blocks a movement of the free end portion along a circumferential direction of the flange element.

Abstract: A heat exchange system and related method for retrofitting an existing bore with the said system, the system being adapted to be used within a bore formed within the ground, and being independent of formation fluids, the system comprising a first pipe and a second pipe together forming a fluid path, wherein substantially a lower end in use of each of the first pipe and the second pipe are in fluid communication with each other and with a sump, so that fluid can flow between the first pipe and the second pipe via the sump within the said bore, the system further comprising a pump adapted to drive heat exchange fluid through the said pipes and a heat exchange unit adapted to transfer thermal energy to or from the said heat exchange fluid.

Abstract: Motors for use in downhole systems such as electric submersible pumps. In one embodiment, an ESP system includes a pump and a motor which drives the pump. The motor has an elongated cylindrical stator and a rotor which is concentrically positioned within a bore through the stator. The rotor is driven by the stator to rotate within the bore. The stator comprises a plurality of separable, interconnected modular stator sections which may be identical. Between each pair of adjacent stator sections, a corresponding interconnect electrically connects coils of magnet wire in the stator sections to a power source. In some cases, the interconnect between stator sections electrically connects the coils of magnet wire serially in the adjacent stator sections. In other embodiments, the coils in adjacent stator sections are connected in parallel the power source.

Abstract: Systems and methods for controlling downhole linear motors to minimize connections to surface equipment. In one embodiment, an ESP system is coupled by a power cable to equipment at the surface of a well. The ESP system includes a linear motor and a reciprocating pump. The motor has a set of position sensors that sense the position of a mover in the motor. Combining circuitry (E.G., XOR gate) combines the outputs of the position sensors into a single composite signal in which signal components corresponding to the position sensors are indistinguishable. A single channel carries the composite signal from the ESP system to the surface equipment. A control system determines a starting position of the motor and determines its subsequent position based on transitions in the composite signal. The motor is then operated based on the position determined from the composite signal.

Abstract: Systems and methods for controlling downhole linear motors to minimize connections to surface equipment. In one embodiment, an ESP system is coupled by a power cable to equipment at the surface of a well. The ESP system includes a linear motor and a reciprocating pump. The motor has a set of position sensors that sense the position of a mover in the motor. Combining circuitry (E.G., XOR gate) combines the outputs of the position sensors into a single composite signal in which signal components corresponding to the position sensors are indistinguishable. A single channel carries the composite signal from the ESP system to the surface equipment. A control system determines a starting position of the motor and determines its subsequent position based on transitions in the composite signal. The motor is then operated based on the position determined from the composite signal.

Abstract: A system for the resilience of an electric submersible pumping system to a transient power interruption includes a power backup connected to the variable speed drive of the pumping system. A method for controlling the electric submersible pump during the transient power interruption includes connecting a variable speed drive to a power source, charging one or more rechargeable batteries within the power backup, and connecting the power backup to the variable speed drive. The method continues with the steps of operating the motor with the variable speed drive, detecting a disruption in AC power from the power source to the variable speed drive, and applying power from the power backup to the variable speed drive to operate the motor during the transient interruption in electrical power.

Abstract: A device for pre-positioning a profile clamp for connecting line end pieces. The device has a bridge element of a profile clamp and a flange element on one of the line end pieces. The bridge element is designed to connect two clamp portions of the profile clamp along a bridge direction. The bridge element has a finger that extends away from the bridge element at least partly transversely to the bridge direction and has a free end portion. The flange element comprises a recess for receiving the free end portion. The recess blocks a movement of the free end portion along a circumferential direction of the flange element.

Abstract: A transformer configured for use in connection with a variable speed motor drive includes primary windings and secondary windings. The secondary windings are configured as wye-windings and a ground lead and a plurality of phase leads. The transformer includes a ferrite blocking circuit connected to the ground lead.

Abstract: A system for the resilience of an electric submersible pumping system to a transient power interruption includes a power backup connected to the variable speed drive of the pumping system. A method for controlling the electric submersible pump during the transient power interruption includes connecting a variable speed drive to a power source, charging one or more rechargeable batteries within the power backup, and connecting the power backup to the variable speed drive. The method continues with the steps of operating the motor with the variable speed drive, detecting a disruption in AC power from the power source to the variable speed drive, and applying power from the power backup to the variable speed drive to operate the motor during the transient interruption in electrical power.

Abstract: A combined pump and motor has a stator mounted for non-rotation in a housing. The stator has windings that create an electromagnetic field in the stator cavity when powered. An upper diffuser and a lower diffuser are mounted for non-rotation in the stator cavity. Annular clearances exist between the upper diffuser and the inner diameter of the stator and between the lower diffuser and the inner diameter of the stator. An impeller between the lower diffuser and the upper diffuser has an array of magnets circumferentially mounted around the impeller that impart rotation to the impeller in response to the electromagnetic field in the stator cavity. The array of magnets has at least one end portion extending into one of the upper and lower diffuser annular clearances.

Abstract: A well fluid pump has a housing with a stator having a stack of discs through which windings extend. First and second stage modules in a bore of the stator have rotating impellers and non-rotating diffusers. Magnets mounted in each of the stage modules rotate the impellers in response to electromagnetic fields generated by the windings. Anti-rotation members join adjacent ones of the impellers together in each of the stage modules for rotation in unison. A bearing assembly between the first and second stage modules has a rotatable inner portion in engagement with the impellers in the first and second stage modules for causing them to rotate in unison. The bearing assembly has a non-rotating outer portion in engagement with the stator to prevent rotation.