1
John H Duerksen, Robert G Wall, Jack D Knight: Steam injection including alpha-olephin sulfonate dimer surfactant additives and a process of stimulating hydrocarbon recovery from a subterranean formation. Chevron Research Company, S R LaPaglia, E J Keeling, A Stephen Zavell, December 3, 1985: US04556107 (30 worldwide citation)

An improved steam injection process for recovering hydrocarbons from a subterranean formation. The process includes the use of alpha-olefin sulfonate dimer surfactants in the steam to form a foam-steam drive medium which is injected into the formation through at least one injection well to enhance t ...


2
John H Duerksen, Robert G Wall, Jack D Knight: Alpha-olefin sulfonate dimer surfactant cyclic steam stimulation process for recovering hydrocarbons from a subterranean formation. Chevron Research Company, S R LaPaglia, E J Keeling, A Stephen Zavell, August 26, 1986: US04607700 (27 worldwide citation)

An improved cyclic steam injection process for recovering hydrocarbons from a subterranean formation. The process includes the use of alpha-olefin sulfonate dimer surfactants in the steam to form a foam-steam drive medium which is injected into the formation through an injection well to enhance the ...


3
John H Duerksen, Robert G Wall, Jack D Knight: Non-condensible gas injection including alpha-olefin sulfonate dimer surfactant additives and a process of stimulating hydrocarbon recovery from a subterranean formation. Chevron Research Company, D A Newell, E J Keeling, A Stephen Zavell, March 18, 1986: US04576232 (20 worldwide citation)

An improved non-condensible gas injection process for recovering hydrocarbons from a subterranean formation. The process includes the use of alpha-olefin sulfonate monomer and alpha-olefin sulfonate dimer surfactants along with the gas to form a gas-foam drive medium which is injected into the forma ...


4
John H Duerksen, Robert G Wall, Jack D Knight: Non-condensible gas injection including alpha-olefin sulfonate surfactant additives. Chevron Research Company, S R LaPaglia, E J Keeling, A Stephen Zavell, February 25, 1986: US04572294 (16 worldwide citation)

An improved non-condensible gas injection process for recovering hydrocarbons from a subterranean formation. The process includes the use of alpha-olefin sulfonate surfactants along with the non-condensible gas to form a gas-foam drive medium which is injected into the formation through at lest one ...


5
John H Duerksen, Robert G Wall, Jack D Knight: Sulfonate dimer surfactant cyclic steam stimulation process for recovering hydrocarbons from subterranean formation. Chevron Research Co, SUN LINGHUA LI LUOYING, March 11, 1987: CN85106805

The process comprises injecting steam-foam driving-substituting medium which is formed by adding alpha-alkylene sulfonate dimer surfactant to steam through injecting well to increase the petroleum productivity of the well under operation.