Positive displacement pump

Details Positive displacement pump Positive displacement pump

2008-01-18

2009-11-03

Dang, Hoang (Department: 3672)

Wells

Processes

Producing the well

C166S060000, C166S062000, C166S068000, C166S105000, C166S372000

Reexamination Certificate

active

07610964

ABSTRACT:
A submersible pumping system for use downhole that includes a housing containing an expandable fluid, that when expanded pushes a piston that in turn pumps wellbore fluid to the surface. The expandable fluid can be a silicon based heat transfer fluid with a coefficient of thermal expansion of at least about 0.0005 in3/in3/° F. The expandable fluid is expanded upon exposure to heat. A heat source is selectively activated for expanding the fluid.

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patent: 2004/0123987 (2004-07-01), Reitz
Dow Corning Corp., Product Information, SYLTHERM 800, Silicone Heat Transfer Fluid, published Nov. 2001, 2 pages.

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