Method of foam drilling using a biodegradable foaming agent

Details Method of foam drilling using a biodegradable foaming agent Method of foam drilling using a biodegradable foaming agent

C - Chemistry, Metallurgy

09

K

31/14

C09K 8/38 (2006.01)

Patent

CA 1093807

"Abstract of the Disclosure" 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: H O R-N-CH2-CH2-S-OM O per part by weight of an N-fatty propionic acid salt having the formula: H O R1-N-CH2-CH2-C-OM1 wherein R and R1 are straight chain alkyl radicals having from 10 to 16 carbon atoms, and M and M1 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.

306920

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