Oilwell pump system and method

Details Oilwell pump system and method Oilwell pump system and method

1981-11-19

1984-12-25

Smith, Leonard E.

Pumps

Condition responsive control of pump drive motor

By controlling drive motor motive fluid

417390, 417392, 417401, 417435, F04B 4708

Patent

active

044900953

ABSTRACT:
A method, system and apparatus is disclosed for pumping liquid from a well such that vapor lock of the pump cannot occur due to gas or steam and such that the pump strokes only in response to the production rate of well liquid. The pump can be used for lifting heavy oils heated by steam floods or the like as well as for pumping liquids from conventional wells. Reduced pump wear, reduced energy requirements, reduced maintenance and the automatic adaption to changing well production rates are among the objects of this invention.

REFERENCES:
patent: 376382 (1888-01-01), Hearn
patent: 2744469 (1956-05-01), Schaefer
patent: 3123007 (1964-03-01), Orr
patent: 4120612 (1978-10-01), Brown

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