Boring or penetrating the earth – Processes – Boring with specific fluid
Patent
1975-10-24
1976-12-07
Novosad, Stephen J.
Boring or penetrating the earth
Processes
Boring with specific fluid
175 71, 166309, 252 85C, C09K 702, C09K 708, E21B 2100
Patent
active
039957055
ABSTRACT:
A method of conducting foam drilling and workover operations in a bore hole penetrating a subterranean formation, particularly a high-temperature formation such as a geothermal formation, employing an aqueous solution of a N-acyl-N-methyltaurate foaming agent having the formula: ##STR1## wherein R is a straight chain alkyl group having from 9 to 15 carbon atoms; and M is an alkali metal or ammonium cation, with sodium being preferred. A particularly preferred foaming agent is sodium N-palmitoyl-N-methyltaurate.
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"Condensed Chemical Dictionary," Sixth Edition, 1961, Reinhold Publishing Corp., New York, N.Y., p. 600.
McCutcheon, J. W., "Surfactants Listed . . . ", Reprinted from Soap & Chemical Specialties, Dec. 1957, Jan., Feb., Mar. & Apr. 1958, pp. 30-31.
Fischer Paul W.
Pye D. Stephen
Hartman Richard C.
Novosad Stephen J.
Sandford Dean
Union Oil Company of California
Vanderburgh John E.
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