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    • 5. 发明授权
    • Surfactant oil recovery process usable in high temperature formations
having high concentrations of polyvalent ions
    • 可用于具有高浓度多价离子的高温地层中的表面活性剂油回收方法
    • US4008165A
    • 1977-02-15
    • US593394
    • 1975-07-07
    • Jim Maddox, Jr.Jack F. Tate
    • Jim Maddox, Jr.Jack F. Tate
    • C09K8/584E21B43/22
    • C09K8/584Y10S507/92Y10S507/927Y10S507/936Y10S516/05
    • A three surfactant system usable in high temperature petroleum formations containing water having from about 200 to about 14,000 parts per million polyvalent ions such as calcium and/or magnesium dissolved therein and a pH of from 5 to 9, and a method of using said surfactant system for recovering petroleum from high temperature subterranean petroleum-containing formations. The three component surfactant system comprises (1) water-soluble salt of an alkyl or alkylaryl sulfonate wherein the alkyl chain may have from 5 to 25 carbon atoms, (2) a phosphate ester surfactant with an average molecular weight not to exceed 1000, and (3) a surfactant having the following betaine related structure: ##STR1## wherein R is an alkyl group having from 12 to 24 carbon atoms, and n is an integer from one to five. The surfactant combination is stable up to at least 225.degree. F and resistant to bacterial attack and inhibits scale formation.
    • 一种三元表面活性剂体系,其可用于含有约200至约14,000份/百万分之几的多价离子(例如溶解于其中的钙和/或镁)和5至9的pH的高温石油化合物,以及使用所述表面活性剂体系 用于从高温含地下石油的地层回收石油。 三组分表面活性剂体系包括(1)烷基或烷基芳基磺酸盐的水溶性盐,其中烷基链可以具有5至25个碳原子,(2)平均分子量不超过1000的磷酸酯表面活性剂,以及 (3)具有以下甜菜碱相关结构的表面活性剂:其中R为具有12至24个碳原子的烷基,n为1至5的整数。 表面活性剂组合稳定至少225°F,耐细菌侵袭并抑制结垢。