首页>
外国专利>
SULFONATED INTERNAL OLEFIN SURFACTANT FOR ENHANCED OIL RECOVERY.
SULFONATED INTERNAL OLEFIN SURFACTANT FOR ENHANCED OIL RECOVERY.
展开▼
机译:硫化的内部烯烃表面活性剂,用于提高采油率。
展开▼
页面导航
摘要
著录项
相似文献
摘要
A process for recovering oil from an oil-bearing formation comprises introducing into said formation an aqueous composition comprising at least one sulfonated derivative of one or more internal olefins, said internal olefins being characterized by having low amounts of tri-substitution on the olefin bond, said sulfonated derivative being obtained by sulfonating a composition comprising internal olefins of the formula: R1R2C=CR3R4 wherein R1, R2, R3 and R4 are the same or different and are hydrogen or straight- or branched-chain, saturated hydrocarbyl groups and the total number of carbon atoms of R1, R2, R3 and R4 is 6 to 44 with the proviso that at least about 96 mole percent of R1 and R3 are straight- or branched-chain, saturated hydrocarbyl groups and at least about 96 mole percent of R2 and R4 are hydrogen. Further provided are compositions for use in recovering oil from an oil-bearing formation.
展开▼
机译:一种从含油地层中采油的方法,包括将包含至少一种一种或多种内烯烃的磺化衍生物的水性组合物引入所述地层中,所述内烯烃的特征在于在烯烃键上的三取代量低,所述磺化衍生物是通过磺化包含式R 1 R 2 C = CR 3 R 4的内烯烃的组合物而获得的,其中R 1,R 2,R 3和R 4相同或不同,并且是氢或直链或支链的饱和烃基和总数R1,R2,R3和R4的碳原子数为6至44,条件是至少约96摩尔%的R1和R3为直链或支链的饱和烃基,并且至少约96摩尔%的R2和R3为-。 R 4是氢。还提供了用于从含油地层中采油的组合物。
展开▼