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

Process for recovering crude oil from an underground reservoir

Patent ·
OSTI ID:7210115
An emulsion of crude oil and water that is recovered from an underground reservoir is broken by the addition of a naturally occurring brine to effect separation and recovery of the oil phase of the emulsion. Advantageously, brine taken from the same geologic formation as the crude oil can be used as the emulsion breaker. 17 claims.
Assignee:
Cities Service Co.
Patent Number(s):
US 4029570
OSTI ID:
7210115
Country of Publication:
United States
Language:
English