Submersibly driven reciprocating pump

Details Submersibly driven reciprocating pump Submersibly driven reciprocating pump

F - Mech Eng,Light,Heat,Weapons

04

B

F04B 47/06 (2006.01) F04B 47/12 (2006.01)

Patent

CA 2286502

A well pump assembly includes a motor that has a rotating drive shaft. The motor is secured to the lower end of a string of tubing, A reversing linear actuator is carried inside the string of tubing. The linear actuator has a first member that is rotated by the drive shaft and a second member that does not rotate, rather moves linearly in response to rotation of the fast member. One of the members is a tracked rod and the other member is a driver cage carried by the tracked rod. A lower connector is also carried in the string of conduit. The lower connector has a coupling on its lower end that stabs into engagement with a coupling on the upper end of the motor drive shaft. A reciprocating type pump is carried within the string of conduit. The pump has a reciprocating plunger, as intake port for receiving well fluid and a discharge port for discharging well fluid up the string of conduit. The linear actuator drives the reciprocating plunger. The pump, linear actuator and connector member are retrievable through the string of conduit while the motor assembly remains suspended below the string of conduit.

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