Rigless low volume pump system

摘要

A deliquification pump for deliquifying a well comprises a fluid end pump adapted to pump a fluid from a wellbore. In addition, the deliquification pump comprises a hydraulic pump adapted to drive the fluid end pump. The hydraulic pump includes a first internal pump chamber and a first pump assembly disposed in the first chamber. The first pump assembly includes a piston having a first end, a second end, and a throughbore extending between the first end and the second end. In addition, the first pump assembly includes a first wobble plate including a planar end face axially adjacent the second end of the piston and a slot extending axially through the first wobble plate. The first wobble plate is adapted to rotate about the central axis relative to the housing to axially reciprocate the piston and cyclically place the throughbore of the piston in fluid communication with the slot.

主权项

1. A shroudless downhole deliquification pump for deliquifying a wellbore extending from the surface into an earthen formation, the pump having an uphole end and a downhole end opposite the uphole end, the pump comprising:
a fluid end pump configured to pump well fluids from the wellbore; a hydraulic pump coupled to the fluid end pump and configured to pressurize hydraulic fluid that drives the fluid end pump; and a fluid conduit extending axially through the hydraulic pump, wherein the fluid conduit is configured to flow the well fluids toward the uphole end to the fluid end pump; wherein the fluid end pump is configured to pump the well fluids received from the fluid conduit to the surface.