Downhole pump

Details Downhole pump Downhole pump

1992-08-05

1994-06-14

Dang, Hoang C.

Wells

Processes

Placing or shifting well part

166 664, 166106, 166187, 4174233, 4174235, E21B 33127

Patent

active

053201825

ABSTRACT:
A downhole pump is provided having characteristics that permit it to be installed in a subterranean well in order to pump well fluids at a substantial pressure to operate a downhole tool, such as an inflatable packer. The pump is mechanically driven by motors whose diameter permits insertion through the well and whose output characteristics are suitable for driving the pump means. A single mounting bracket supports the motors in a housing and prevents counter rotation of the motor stators. The motors are immersed in a clean fluid inserted at the well surface and the clean fluid is maintained at the well hydrostatic pressure by a compensating piston.

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patent: 4823037 (1989-04-01), Abukawa et al.
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