Invention Application
WO2014193731A1 A LOW TEMPERATURE STABILIZED FOAM-FORMING COMPOSITION FOR ENHANCED OIL RECOVERY 审中-公开
低温稳定的泡沫成型组合物,用于增强油回收

A LOW TEMPERATURE STABILIZED FOAM-FORMING COMPOSITION FOR ENHANCED OIL RECOVERY
Abstract:
This invention relates to a foam-forming composition having good low temperature stability and method of use thereof for enhanced oil recovery. Said foam-forming composition comprises an anionic sulfonate surfactant, preferably an alpha-olefin sulfonate, a alkyl ether solvent, and water and is preferably stable to at least -5C. A preferred alkyl ether solvent has the formula C8H18O3, C8H16O3, or mixtures thereof. Preferred alpha-olefin sulfonate have 10 to 18 carbons, preferably 12 carbons. A preferred method for recovering oil from a reservoir comprises the periodic injection of gas and said foam-forming composition into the reservoir and contacting the oil in the reservoir with the foam so as to assist in the recovery of oil from the reservoir.
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