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Title: Lifting liquid from boreholes

A device for lifting liquid from boreholes comprises a pump which is located downhole in the region of a production formation and which consists of a fluid-actuated, double-action piston. The pump is connected by fluid pressure lines to a source of fluid pressure disposed above ground and a switching valve is connected to provide fluid pressure to alternate sides of the piston to effect reciprocation thereof.
Authors:
Publication Date:
OSTI Identifier:
5964528
Report Number(s):
US 4383803
Resource Type:
Patent
Resource Relation:
Patent File Date: Filed date 14 Oct 1980; Other Information: PAT-APPL-196615
Country of Publication:
United States
Language:
English
Subject:
02 PETROLEUM; MATERIALS HANDLING EQUIPMENT; DESIGN; OIL WELLS; BOREHOLES; PETROLEUM; PUMPS; RECOVERY; CAVITIES; ENERGY SOURCES; EQUIPMENT; FOSSIL FUELS; FUELS; WELLS 022000* -- Petroleum-- Transport, Handling, & Storage; 020300 -- Petroleum-- Drilling & Production