公开(公告)号：WO2010129051A1

公开(公告)日：2010-11-11

申请号：PCT/US2010/001337

申请日：2010-05-05

Applicant: STEPAN COMPANY

Inventor： HUTCHISON, John, C. ,  WOLFE, Patrick, S. ,  WALDMAN, Thomas, E. ,  RAVIKIRAN, Ramakrishna

IPC: C09K8/584

CPC classification number: C09K8/584 ,  C07C303/06 ,  C07C309/20

Abstract: 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: R 1 R 2 C=CR 3 R 4 wherein R 1 , R 2 , R 3 and R 4 are the same or different and are hydrogen or straight- or branched- chain, saturated hydrocarbyl groups and the total number of carbon atoms of R, R, R and R 4 is 6 to 44 with the proviso that at least about 96 mole percent of R 1 and R 3 are straight- or branched-chain, saturated hydrocarbyl groups and at least about 96 mole percent of R 2 and R 4 are hydrogen. Further provided are compositions for use in recovering oil from an oil-bearing formation which comprise the sulfonated derivatives of one or more internal olefins having low amounts of tri-substitution on the olefin bond.

Abstract translation: 从含油地层回收油的方法包括向所述地层中引入包含至少一种或多种内烯烃的磺化衍生物的水性组合物，所述内烯的特征在于在烯烃键上具有低量的三取代， 所述磺化衍生物通过磺化包含下式的内烯烃的组合物获得：其中R 1，R 2，R 3和R 4相同或不同，为氢或直链或支链饱和烃基，并且总数 R，R，R和R 4的碳原子数为6至44，条件是至少约96摩尔％的R 1和R 3为直链或支链饱和烃基和至少约96摩尔％的R 2和 R4是氢。 还提供了用于从含油地层回收油的组合物，其包含在烯烃键上具有低量三取代的一种或多种内烯烃的磺化衍生物。

公开(公告)号：WO2012158645A1

公开(公告)日：2012-11-22

申请号：PCT/US2012/037842

申请日：2012-05-14

Applicant: STEPAN COMPANY ,  RAVIKIRAN, Ramakrishna ,  ZHANG, Jieyuan

Inventor： RAVIKIRAN, Ramakrishna ,  ZHANG, Jieyuan

IPC: E21B43/22

CPC classification number: C09K8/584

Abstract: Surfactant compositions useful for oil recovery comprise from 10 to 80 wt. % of a prapoxylated C 12-C20 alcohol sulfate, from 10 to 80 wt. % of a C12-C20 internal olefin sulfonate, and from 0.1 to 10 wt. % of an ethoxylated C4-C12 alcohol sulfate. A minor proportion of the ethoxylated alcohol sulfate reduces or eliminates the need to rely on costly cosolvents for achieving good performance in enhanced oil recovery processes. Low interfaoial tensions and low microemulsion viscosities can be achieved when the ethoxylated alcohol sulfate accompanies the propoxytated alcohol sulfate and internal olefin sulfonate. Aqueous concentrates comprising water and the surfactant compositions described above are also disclosed. Dilution of the surfactant composition or aqueous concentrate with water or brine to the desired anionic actives level provides an injectable composition useful for EOR applications. Stable, low-viscosity oil-in- water microemulsions comprising crude oil, water, and the surfactant compositions are also disclosed.

Abstract translation: 用于油回收的表面活性剂组合物包含10至80wt。 ％的丙二酰化C 12 -C 20醇硫酸盐，10至80wt。 ％的C 12 -C 20内烯烃磺酸盐，和0.1至10wt。 ％的乙氧基化C4-C12醇硫酸盐。 少量的乙氧基化醇硫酸盐减少或消除了在增强的油回收方法中获得良好性能的需要，依赖于昂贵的助溶剂。 当乙氧基化醇硫酸盐伴随丙氧基醇硫酸盐和内部烯烃磺酸盐时，可以实现低内在张力和低微乳液粘度。 还公开了包含水和上述表面活性剂组合物的水性浓缩物。 将表面活性剂组合物或含水浓缩物用水或盐水稀释至所需的阴离子活性物质水平，提供了可用于EOR应用的可注射组合物。 还公开了包含原油，水和表面活性剂组合物的稳定的低粘度水包油微乳液。