Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Biodegradable foaming agent in drilling and workover operations

Patent ·
OSTI ID:6142755
A method is describes for conducting foam drilling and workover operations in a bore hole penetrating a subterranean reservoir employing an aqueous solution of a biodegradable foaming agent composition containing about 0.1 to 1 part by weight of an N-fatty ethyl sulfate salt. A particularly preferred foaming egent composition contains sodium 2-(N-lauryl) ethyl sulfate and sodium laurate.
Assignee:
Union Oil Co. of California
Patent Number(s):
US 4121664
OSTI ID:
6142755
Country of Publication:
United States
Language:
English