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    • 3. 发明授权
    • Micellar slug for oil recovery
    • 用于油回收的胶束
    • US4597879A
    • 1986-07-01
    • US480768
    • 1983-03-31
    • Hiroshi MoritaYasuyuki KawadaJunichi YamadaToshiyuki Ukigai
    • Hiroshi MoritaYasuyuki KawadaJunichi YamadaToshiyuki Ukigai
    • C09K8/584E21B43/22
    • C09K8/584Y10S507/938
    • A micellar slug for use in the recovery of oil, the slug containing a hydrocarbon, an aqueous medium, a surfactant, and a cosurfactant. The surfactant contains as an essential component an internal olefin sulfonate having 10 to 26 carbon atoms, a hydroxyalkane sulfonate content of not less than about 40% by weight and a disulfonate content of not more than 20% by weight and said internal olefin sulfonate being desired from the sulfonation of an internal olefin having the general formula:R--CH.dbd.CH--R'wherein R is a straight- or branched-chain alkyl group having 4 to 23 carbon atoms, R' is a straight- or branched-chain alkyl group having 1 to 12 carbon atoms provided that the total carbon atom numbers of R and R' is 8 to 24 and 50% by weight or more of the internal olefins is that having R' with 1 to 4 carbon atoms. This micellar slug has an excellent capability for decreasing an interfacial tension between oil and water and an excellent salinity tolerance and hard-water resistance. Furthermore, the micro-emulsion can be formed from this micellar slug in a wide composition range.
    • 用于回收油的胶束塞,含有烃的水泥,水性介质,表面活性剂和辅助表面活性剂。 表面活性剂作为必要组分含有具有10至26个碳原子的内部烯烃磺酸盐,羟基烷烃磺酸盐含量不低于约40重量%,二磺酸盐含量不超过20重量%,所需内部烯烃磺酸盐是所需的 从具有以下通式的内部烯烃的磺化:R-CH = CH-R'其中R是具有4至23个碳原子的直链或支链烷基,R'是直链或支链烷基 具有1至12个碳原子的基团,条件是R和R'的总碳原子数为8至24,并且50重量%或更多的内烯是具有1至4个碳原子的R'。 该胶束颗粒具有降低油和水之间的界面张力和优异的耐盐性和耐硬水性的极好的能力。 此外,微乳液可以在宽的组成范围内由该胶束块形成。