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U.S. Department of Energy
Office of Scientific and Technical Information

Process for oil recovery by aqueous drive

Patent ·
OSTI ID:6323085
A process for producing oil from an oil-bearing stratum utilizing non-ionic surfactants consists of injecting into the stratum an aqueous slug containing the surfactant in a concentration of about 0.001-5.0 wt % and suspended 0.001-1.0 mu size particles of carbon black, talc, or kaolin in a concentration of about 0.05-2.0 wt %. The slug is driven into the stratum away from the well so as to displace oil from the stratum into a producing well. In another application of the process, the pressure on the injection well may be reduced so that the slug moves back to the injection well, moving the displaced oil into the injection well for production by conventional means such as pumping. The driving fluid may be water, steam, or a suitable gas such as air or combustion gas. (14 claims)
Assignee:
Phillips Petroleum Co.
Patent Number(s):
US 3326287
OSTI ID:
6323085
Country of Publication:
United States
Language:
English