Surfactant mixtures for tertiary oil recovery
    1.
    发明授权
    Surfactant mixtures for tertiary oil recovery 失效
    用于三次采油的表面活性剂混合物

    公开(公告)号:US08524643B2

    公开(公告)日:2013-09-03

    申请号:US13242995

    申请日:2011-09-23

    摘要: Use of a mixture comprising a surfactant and a cosurfactant in the form of an aqueous solution for flooding underground deposits of hydrocarbons for mobilizing and recovering the hydrocarbons from the underground deposits, the cosurfactant being a substance or a group of substances selected from the following list: an amphiphilic comb polymer having a backbone with two or more side chains attached to the backbone, the side chains differing from one another and/or the side chains differing from the backbone in their amphiphilic character, an amphiphilic polymer having one or more hydrophobic subunits [A2] based on a polyisobutene block, at least 50 mol % of whose polyisobutene macromolecules have terminally arranged double bonds, and one or more hydrophilic subunits [B2], or an amphiphilic polymer having the general structural formula

    摘要翻译: 使用包含表面活性剂和辅助表面活性剂的水溶液形式的辅助表面活性剂用于淹没地下沉积物的烃,用于从地下沉积物中移出和回收烃,辅助表面活性剂是选自以下列表的物质或一组物质: 具有两个或更多个侧链的主链的两亲梳状聚合物,所述侧链与主链相连,侧链彼此不同,和/或不同于主链的侧链在其两性特征中,具有一个或多个疏水性亚单位的两亲性聚合物[ A2]基于聚异丁烯嵌段,其至少50摩尔%的聚异丁烯大分子具有末端排列的双键,以及一个或多个亲水亚单元[B2]或具有通式结构式的两亲性聚合物