Through-tubing, retrievable downhole pump system

Details Through-tubing, retrievable downhole pump system Through-tubing, retrievable downhole pump system

1998-11-24

2000-07-18

Thorpe, Timothy S.

Pumps

Motor driven

Including means for facilitating assembly or disassembly of...

4174233, 4174242, 166 685, F04B 1700

Patent

active

060898321

ABSTRACT:
A downhole pump system which allows the pump unit to be retrieved and re-installed through the production tubing while leaving the tubing, electrical cable, and the remainder of the components of the pump system in place. Preferably, the pump unit is run on a string of coiled-tubing through a lubricator which is positioned downhole in the production tubing. The pump unit includes a slip-joint at its upper end which (a) allows the length of the pump unit to be adjusted to compensate for the spacing between the seating surface and latching grooves in the nipple and (b) allows the pressures to be balanced across the pump unit during installation and retrieval.

REFERENCES:
patent: 3411454 (1968-11-01), Arutunoff
patent: 4197879 (1980-04-01), Young
patent: 5746582 (1998-05-01), Patterson
patent: 5871051 (1999-02-01), Mann
patent: 5954483 (1999-09-01), Tetzlaff
Brochure: "Model "ML-2" and "MH-2" Tubing Retrievable Safety Valves", Baker Packers, Houston, Tx.
Brochure: Otis X-Line.RTM. and R-Line.RTM. Landing Nipples and Lock Mandrels, Halleburton, Dallas, Tx.

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