Pumps – One fluid pumped by contact or entrainment with another – Diverse pumps
Patent
1974-05-20
1976-06-15
Croyle, Carlton R.
Pumps
One fluid pumped by contact or entrainment with another
Diverse pumps
417 71, 417384, 417394, 417395, F04F 118, F04B 912, F04B 4310, F04B 4500
Patent
active
039633772
ABSTRACT:
Disclosed is a pumping system using a pneumatically powered, submerged pump for lifting high viscosity oil from a well. The pump includes a flexible, bag-shaped expansible member or "bladder" mounted within a surrounding housing. Pressurized gas is supplied from the well surface to the bladder through a supply line. An inlet check valve permits oil in the formation to flow into the housing when the bladder is collapsed. When the bladder is expanded or displaced by the gas, the oil in the housing is displaced through an outlet check valve into a flow line which extends to the well surface. A submerged control valve channels gas into the bladder to control the bladder expansion. The control valve also functions to permit the gas in the bladder to flow into a vent tube to control bladder deflation.
In a modified form of the invention, oil flowing into the housing expands the bladder and gas supplied to the housing collapses the bladder. All of the systems may include gas lift valves which communicate gas in the supply line into the flow line to assist in elevating the fluids to the surface.
REFERENCES:
patent: 1067613 (1913-07-01), Lane
patent: 2152802 (1939-04-01), Harris
patent: 2196993 (1940-04-01), Kidder
patent: 2489665 (1949-11-01), O'Leary
patent: 2644401 (1953-07-01), Ragland
patent: 2814993 (1957-12-01), Schmidt
patent: 3215087 (1965-11-01), McLeod
patent: 3286640 (1966-11-01), Bauer
patent: 3606584 (1971-09-01), Sizer
patent: 3814545 (1974-06-01), Waters
Dinning Robert W.
Elliott J. Kelly
Croyle Carlton R.
Gluck Richard E.
Moore Stewart F.
Moseley David L.
Schlumberger Technology Corporation
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