Oil recovery process and system

Details Oil recovery process and system Oil recovery process and system

1983-09-19

1986-04-08

Suchfield, George A.

Wells

Above ground apparatus

Cap having transporting means or ground support

166275, 166 751, 524555, 524827, 5253294, E21B 4322

Patent

active

045806276

ABSTRACT:
An on-site, in-line process and system for recovering oil from oil-bearing subterranean formations which involves the production, modification, dilution and injection of a polymer solution, preferably consisting essentially of an aqueous solution of a partially hydrolyzed polyacrylamide, having injectivity and mobility properties capable of meeting the specific permeability requirements of substantially any subterranean formation to be achieved. The polymer solutions prepared by the process and system can be used as drive fluids for displacing oil (secondary polymer flood) in an oil-bearing formation, as mobility buffers to follow micellar dispersion floods in the conjoint presence of chemical reagents in other chemical floods (e.g., surfactant, caustic, etc.), or they can follow a water flood. The solutions can also be used to promote pipelining of high viscosity crude oil. Irrespective of the use to which the solutions are put, the process and system enable the polymer solutions to be customized, or tail-made, so to speak, to meet the performance demands of the environment in which they are to be used, whether it be an oil-bearing formation or a pipeline.

REFERENCES:
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patent: 3039529 (1962-06-01), McKennon
patent: 3370649 (1968-02-01), Wolgemuth
patent: 3476186 (1969-11-01), Sarem
patent: 3663490 (1972-05-01), Sarem
patent: 3679000 (1972-07-01), Kaufman
patent: 3825067 (1974-07-01), Vestal
patent: 3902558 (1975-09-01), Watson, Jr.
patent: 4021394 (1977-05-01), Tuka et al.
patent: 4383930 (1983-05-01), Argabright et al.

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