发明名称 |
SURFACTANT MIXTURES FOR TERTIARY OIL RECOVERY |
摘要 |
<p>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</p> |
申请公布号 |
EP1893717(A1) |
申请公布日期 |
2008.03.05 |
申请号 |
EP20060777283 |
申请日期 |
2006.06.08 |
申请人 |
BASF SE |
发明人 |
HUFF, JUERGEN;OETTER, GUENTER;KUEHNLE, ANGELIKA;PETROVIC, SUSANNE;GUZMANN, MARCUS;MUENSTER, INGO;BRODT, GREGOR |
分类号 |
C09K8/58;C09K8/60 |
主分类号 |
C09K8/58 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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