Boring or penetrating the earth – Processes – Boring with specific fluid
Patent
1977-10-17
1978-10-24
Novosad, Stephen J.
Boring or penetrating the earth
Processes
Boring with specific fluid
166309, 175 69, 252 85C, E21B 2100, C09K 702, C09K 708
Patent
active
041216741
ABSTRACT:
A method 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 0.3 to 3 parts by weight of an N-fatty ethyl sulfonic acid salt having the formula: ##STR1## per part by weight of an N-fatty propionic acid salt having the formula: ##STR2## wherein R and R.sub.1 are straight chain alkyl radicals having from 10 to 16 carbon atoms, and M and M.sub.1 are alkali metal or ammonium cations. A particularly preferred foaming agent composition contains sodium 2-(N-lauryl) ethyl sulfonic acid and sodium 2-(N-lauryl) propionic acid.
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Swisher, "The Chemistry of Surfactant Biodegradation," The Journal of the American Oil Chemists' Society, vol. 40, Nov., 1963, pp. 648-656.
Fischer Paul W.
Pye David S.
Floyd Gerald L.
Hartman Richard C.
Novosad Stephen J.
Sandford Dean
Suchfield George A.
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