F - Mech Eng,Light,Heat,Weapons – 04 – B
Patent
F - Mech Eng,Light,Heat,Weapons
04
B
103/30
F04B 43/00 (2006.01) F04B 43/12 (2006.01) F04B 47/04 (2006.01)
Patent
CA 1206806
ABSTRACT OF THE DISCLOSURE A liquid pump is provided and particularly a downhole pump for use in an oil well bore for pumping oil or in a gas well for removing condensate. The downhole pump includes a plurality of pump and transfer modules, each of which has an elongate housing with end couplings and with two internal gas passages and a liquid passage extending therethrough. The pump module further has a bladder extending between the end couplings around the internal passages with the couplings having passages connecting one of the internal passages to space on one side of the bladder. When fluid, preferably gas, under pressure is supplied through the coupling passages, the bladder forces liquid therein upwardly into the next module. At the same time, fluid under pressure is exhausted through the coupling passages of the next pump module, aiding it to receive liquid from the pump module therebelow. The transfer modules supply the liquid up from a lower pump module to an upper one and connect the fluid passages to enable the fluid to operate the bladders. The components of the modules have several improvements over those disclosed in the parent application. The internal com- ponents also are all supported from the upper end so that they can expand toward the lower end. The elongate housings, including threaded end connections, are now of one-piece construction. The pump also includes a wellhead unit and a bottom unit. -2-
437034
Rowley C.a.
Zimmerman (d.w.) Mfg. Inc.
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