Process for recovering oil from subterranean formations
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United States of America Patent
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May 20, 1986
Issued Date -
N/A
app pub date -
Nov 19, 1984
filing date -
Mar 23, 1983
priority date (Note) -
Expired
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Abstract
Disclosed is a method of using polymer flooding solutions in tertiary oil recovery operations in which the loss of relatively high molecular weight polymers to the formation is substantially reduced by the use of aqueous solutions of polyethylene glycol or polypropylene glycol or both, having a molecular weight of from about 600 to about 1200. The method is particularly effective under high salinity conditions.
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