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

Carbon dioxide foam flooding

Patent ·
OSTI ID:6500810
A method of conducting an enhanced oil recovery process in a subterranean reservoir is described. There is injected into the reservoir as a sweep fluid a foam containing carbon dioxide, water, and a foaming agent having the formula ROCOCH/sub 2/SO/sub 2/OM, where R is a straight chain alkyl radical having from 10 to 16 carbon atoms, and M is an alkali metal or ammonium cation, with sodium being preferred. A particularly preferred foaming agent is sodium lauryl sulfoacetate.
Assignee:
Union Oil Co.
Patent Number(s):
US 4088190
OSTI ID:
6500810
Country of Publication:
United States
Language:
English