OIL-IN-WATER STABLE, EMULSIFIED SPACER FLUIDS
    87.
    发明申请
    OIL-IN-WATER STABLE, EMULSIFIED SPACER FLUIDS 审中-公开
    油水稳定,乳化间隔液

    公开(公告)号:US20160090523A1

    公开(公告)日:2016-03-31

    申请号:US14890849

    申请日:2013-09-19

    IPC分类号: C09K8/40 E21B33/14 E21B21/08

    摘要: Some embodiments described herein provide a method comprising method comprising providing an oil-in-water emulsified spacer fluid comprising a binary surfactant mixture, solvent non-aqueous base fluid, and an aqueous base fluid, wherein the binary surfactant mixture comprises a surfactant and an amphiphilic co-surfactant, wherein the surfactant is present in an amount in the range of from about 0.5% to about 30% by weight of the oil-in-water emulsified spacer fluid and wherein the amphiphilic co-surfactant is present in an amount in the range of from about 0.5% to about 30% by weight of the oil-in-water emulsified spacer fluid, and introducing the oil-in-water emulsified spacer fluid into a subterranean formation comprising a residual non-aqueous fluid therein, wherein the binary surfactant mixture in the oil-in-water emulsified spacer fluid emulsifies at least a portion of the residual non-aqueous fluid.

    摘要翻译: 本文所述的一些实施方案提供了一种方法,其包括提供包含二元表面活性剂混合物,溶剂非水性基础流体和基础水溶液的水包油乳化分离液,其中所述二元表面活性剂混合物包含表面活性剂和两亲性 辅助表面活性剂,其中表面活性剂的存在量为水包油乳化间隔液的约0.5重量%至约30重量%,并且其中两亲性辅助表面活性剂以 范围为水包油乳化间隔液的约0.5重量%至约30重量%,并将水包油乳化间隔液引入含有其中残留的非水性流体的地层中,其中二元 水包油乳化分离液中的表面活性剂混合物乳化至少一部分残留的非水性流体。