An electric drive compressor system (1) comprising: a reciprocating compressor (2) having temperature and pressure sensors (83, 84) for sensing a pressure and temperature of gas prior to compression by the compressor (1) and for sensing a pressure and temperature of gas after compression by the compressor (1); a motor (3) connected to the compressor (1) for driving the compressor (1); a cooling system (4) for cooling the motor (3); and a controller (5) for controlling the motor (3) in real time based on the temperature and pressure sensor readings of the gas prior to and after compression by the compressor (1). Features and advantages of the systems (1) as exemplified are as follows: lightweight and compact design; refrigerant circuit sealed from electric motor for ease of maintenance and service; air cooled from unique fin and airflow passage design, with fan width pulse width modulation; intelligent control system with pressure and temperature sensors/transducers and software; separate compressor working assembly to ensure piston alignment and compression is not affected by heat distortion; separate outer housing and compressor crankcase to ensure leak free operation.

A system for monitoring a fluid end of a high pressure pump. The system is configured to receive, with a fluid end data logger attached to the fluid end, fluid end data from a plurality of sensors associated with the fluid end, and a fluid end identifier associated with the fluid end; tag, with an electronic processor in the fluid end data logger, the fluid end data with the fluid end identifier; store, with a memory coupled to the electronic processor, the tagged fluid end data; send, with a transceiver in the fluid end data logger, the tagged fluid end data to a power end; and receive, with the transceiver in the fluid end data logger, a power end data from the power end, the power end data including a power end identifier.

A method of testing a unit pump system performance is disclosed. In one embodiment of the present disclosure, the method of testing a unit pump system performance determines if mechanical and/or electrical stability of a control valve of the unit pump system are achieved before measuring an output injection volume variation.

A system, method, and computer-readable medium for determining the flow rate and fluid density in an electrical submersible pump (ESP) and controlling the ESP based on the flow rate and density. In one implementation, an ESP system includes an ESP, drive circuitry, a current sensor, a voltage sensor, and a processor. The ESP includes an electric motor. The drive circuitry is electrically coupled to the ESP and is configured to provide an electrical signal to power the ESP. The current sensor is configured to measure a current of the electrical signal. The voltage sensor is configured to measure a voltage of the electrical signal. The processor is configured to calculate speed of a shaft of the electric motor based on a frequency induced by rotation of the motor detected in the current. The processor is also configured to calculate a density of fluid in the ESP based on the speed.

A cryopump system includes a cryopump, and a regeneration control unit that controls the cryopump according to a regeneration sequence including a discharge process of rough pumping the cryopump to discharge condensate from it. The regeneration control unit includes a pressure drop rate computation unit that computes a pressure drop rate for the cryopump during the rough pumping of the cryopump, and a pressure drop rate monitoring unit that detects diminishment in the pressure drop rate during the rough pumping.

A system, method, and computer-readable medium for determining the flow rate and fluid density in an electrical submersible pump (ESP) and controlling the ESP based on the flow rate and density. In one implementation, an ESP system includes an ESP, drive circuitry, a current sensor, a voltage sensor, and a processor. The ESP includes an electric motor. The drive circuitry is electrically coupled to the ESP and is configured to provide an electrical signal to power the ESP. The current sensor is configured to measure a current of the electrical signal. The voltage sensor is configured to measure a voltage of the electrical signal. The processor is configured to calculate speed of a shaft of the electric motor based on a frequency induced by rotation of the motor detected in the current. The processor is also configured to calculate a density of fluid in the ESP based on the speed.

The present invention concerns a method of operating at least one metering device. To provide a method of operating metering devices, which can be flexibly adapted, it is proposed according to the invention that the method has the steps of providing a server, providing at least one metering device, providing a closed-loop control device, transmitting data, providing a case database, calculating improved further operating data and providing the improved further operating data for the control device.

A system for monitoring a fluid end of a high pressure pump. The system is configured to receive, with a fluid end data logger attached to the fluid end, fluid end data from a plurality of sensors associated with the fluid end, and a fluid end identifier associated with the fluid end; tag, with an electronic processor in the fluid end data logger, the fluid end data with the fluid end identifier; store, with a memory coupled to the electronic processor, the tagged fluid end data; send, with a transceiver in the fluid end data logger, the tagged fluid end data to a power end; and receive, with the transceiver in the fluid end data logger, a power end data from the power end, the power end data including a power end identifier.

Methods, systems, and apparatus are disclosed to provide a pressurized fluid to components of a fluid pump. An example flow control system to provide a pressurized lubricant to a secondary flow network disposed within a fluid pump includes sensors to measure parameters of a fluid corresponding to fluid flow; a recirculation loop fluidly coupled to a secondary inlet of the pump, the recirculation loop to provide a first flowpath, wherein the secondary inlet is an inlet to the secondary flow network; a bypass circuit fluidly coupled to the secondary inlet to provide a second flowpath; and a controller to direct the fluid flow to the first flowpath or the second flowpath based on sensor data from the sensor, the sensor data indicative of a state of the fluid.

The present invention concerns a metering device having a metering chamber in which a displacement element is arrange moveably in such a way that it is reciprocable between two positions, wherein the volume of the metering chamber in the one position is greater than in the other position. The metering device further has an actuator for driving the displacement element, which has an actuator input for an electrical actuation signal and is so constructed that an electrical actuation signal at the actuator input is converted into a mechanical movement. In addition the metering device has a sensor for detecting a physical or chemical measurement value, which has a sensor output for an electrical measurement signal and is so adapted that it detects the physical or chemical measurement value, converts it into an electrical measurement signal and makes same available at the sensor output. Finally the metering device has a communication interface, by way of which the metering device can communicate with a remotely arranged server.