Patent ID: 8889600
Filing Date: 2014-11-18
Classification: B01J,C07C,C09K,C10G

Abstract:
1. A process which comprises recovering oil from an oil-bearing formation, said process comprising introducing into said formation using surfactant polymer flooding or alkali surfactant polymer flooding an aqueous composition comprising at least one surfactant comprising a sulfonated derivative of one or more internal olefins, said sulfonated derivative being obtained by sulfonating a composition comprising internal olefins of the formula: wherein R wherein the internal olefins are obtained by the metathesis of one or more alpha-olefins in the presence of a metathesis catalyst; wherein the one or more alpha-olefins are obtained by the metathesis of an unsaturated glyceride-containing composition in the presence of a metathesis catalyst; wherein said surfactant polymer flooding involves injecting into the oil-bearing formation a fluid containing water, brine, or a mixture thereof, about 0.05 to about 2 wt. % of a surfactant, and about 0.05 to about 1 wt. % of a polymer; and wherein said alkali surfactant polymer flooding involves injecting into the oil-bearing formation a fluid containing water, brine, or a mixture thereof, about 0.1 to about 1 wt. % of alkali, about 0.05 to about 2 wt. % of a surfactant, and about 0.05 to about 1 wt. % of a polymer.