An electric submersible pump system for use in a wellbore includes a pump; a motor protection component having an oil chamber and an wellbore fluid chamber; a motor component, the motor component including oil and being fluidly coupled to the oil chamber of the motor protection component; and a chemical chamber that includes a neutralization chemical. The neutralization chemical includes a scale inhibitor. The chemical chamber is configured to contact fluid from the wellbore with the neutralization chemical and is fluidly coupled to the wellbore fluid chamber of the motor protection component. The pump is configured to be driven by the motor component. A chemical chamber and a method for operating an electric submersible pump are also disclosed.

A system and method for rapid pressurization of a motor compartment and cooling system during a shutdown, a surge, and/or other situations in which the suction pressure significantly varies. A motor/compressor arrangement includes a seal gas system fluidly communicating with the motor compartment via a motor pressurization line, with the outlet of the compressor, and with a shaft seal. A motor pressurization valve is coupled to the motor pressurization line and a controller is configured to open the motor pressurization valve at start-up of the motor-compressor to supply seal gas to the motor compartment and to pressurize the motor compartment when a difference between the seal gas supply pressure and the suction pressure is indicative of the seal gas supply pressure being insufficient.

A combined multi-phase pump and compressor unit and a gas compression system are provided. The combined multi-phase pump and compressor unit functions on a centrifugal principle for transporting liquid and gas from a flow conditioner to a remote multi-phase receiving plant, wherein a rotating separator separates liquid and gas upstream of a compressor part of the combined multi-phase pump and compressor unit, wherein the separated liquid is collected in a rotating annulus in such a way that the liquid is given kinetic energy which is converted to pressure energy in a static system, and wherein the pressurized liquid bypasses the compressor part of the combined multi-phase pump and compressor unit, and then is re-mixed with the gas downstream of the combined multi-phase pump and compressor unit.

A compressor system includes a compressor (50) configured to compress a gas, a compressed gas circulation unit (52) in which a gas compressed by the compressor (50) circulates, a hydrate anti freezing agent supply unit (53) configured to supply a hydrate anti freezing agent for preventing hydration of the gas to the compressed gas circulation unit (52), a compressor hydrate anti freezing agent supply unit (54) configured to supply part of the hydrate anti freezing agent supplied from the hydrate anti freezing agent supply unit (53) to the compressor (50), and a pressure changing unit (59) configured to change a pressure of the hydrate anti freezing agent inside the compressor (50).

A pump is provided for immersion in a fluid reservoir, such as a pit or lagoon containing liquid manure, from a position at an edge of the reservoir. The pump may be adapted for connection to a farm vehicle, such as a tractor, positioned at the edge of the reservoir. The pump has a frame, a fluid conduit coupled to the frame, a housing located at a bottom end of the liquid manure pump configured to be immersed in a liquid manure reservoir, a combiner for creating a liquid manure connection between at least two liquid manure outlets of the housing and the fluid conduit. an impeller located within the housing, a drive shaft connected to the impeller, and an agitator nozzle, in fluid communication with at least one of the liquid manure outlets, for directing a portion of the liquid manure outwardly from the pump.

A compressor system includes a compressor (50) that includes a casing, a rotation shaft supported in the casing and an impeller that rotates together with the rotation shaft and compresses a gas. The compressor system includes a compressed gas circulation unit (52) in which the gas compressed by the compressor (50) circulates, a hydrate anti freezing agent supply unit (53) configured to supply a hydrate anti freezing agent that prevents hydration of the gas to the compressed gas circulation unit (52), and an internal hydrate anti freezing agent supply unit (54) configured to supply part of the hydrate anti freezing agent to an internal flow path of the compressor (50).

A centrifugal pump impeller support system and apparatus is described. A centrifugal pump includes an impeller including an impeller eye skirt extending axially from an eye of the impeller, and in certain stages, a balance ring skirt, and an impeller support insert secured around an outer diameter of at least one of the impeller skirts, each of the at least one impeller support inserts including a sleeve extending tubularly around the impeller skirt, and a flange extending perpendicularly to a longitudinal axis of the centrifugal pump shaft. A diffuser stacked adjacent to the impeller includes a bushing secured around an inner diameter of the diffuser flow exit outward of the impeller eye skirt support insert or a bushing secured around an inner diameter of the flow entrance outward of the balance ring skirt support insert.

System for subsea pumping or compressing, comprising: an ESP (electrical submersible pump), a flowline jumper, a connector part in either end of the flowline jumper, and an arrangement for lifting, the ESP has been arranged in the flowline jumper which has been orientated in substance horizontal, distinctive in that the system further comprises: a stiffening arrangement, ensuring a straight ESP shaft at ail times during lifting, installation and operation, and a load limiting arrangement for limiting or eliminating the load on structure and seabed supporting the system.

A compression system may include a compressor having first and second sides separated by a division wall, first and second shafts, and first and second radial bearings. The first and second shafts may be axially connected to each other at respective first ends via a rotor portion of an intermediate radial bearing. The rotor portion may include a plurality of laminations stacked between first and second plates fastened to each other. The first radial bearing may be disposed on a first side of the intermediate radial bearing and may be proximate a second end of the first shaft. The first radial bearing may be configured to support the first shaft. The second radial bearing may be disposed on a second side of the intermediate radial bearing and may be proximate a second end of the second shaft. The second radial bearing may be configured to support the second shaft.

The axial reaction force generated by a subsea pump or compressor is partially counteracted by a pressure differential in a barrier fluid across a thrust element. The pressure differential is created using impellers or other structures on the thrust element that increases the barrier fluid pressure on one side of the thrust element when the main shaft of the pump or compressor is rotated. The pressure differential across the thrust element partially offloads the bearing surface of the thrust element.