E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
31/31
E21B 43/22 (2006.01) C09K 8/592 (2006.01)
Patent
CA 1248340
A B S T R A C T OLEFIN SULPHONATE COMPOSITIONS The invention provides olefin sulphonate compositions com- prising an aqueous solution containing 15 to 35 %w of a blend of (a) C12-22 linear alpha-olefin sulphonate and (b) alkyl aryl sulphonate of general formula (I) Image where n is o, 1 or 2, R is a C8-C18 alkyl group and M is an alkali metal or ammonium ion, the weight ratio (a):(b) being in the range 90:10 to 60:40; and use of such compositions in foam drive processes of enhanced oil recovery.
467890
Craven Sheila M.
Fernley George W.
Shell Canada Limited
Smart & Biggar
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