公开(公告)号：US20200010756A1

公开(公告)日：2020-01-09

申请号：US16483367

申请日：2018-02-06

Applicant: Total S.A.

Inventor： Leyu Cui ,  Maurice Bourrel ,  Fabienne Dubos ,  Alexandra Klimenko

IPC: C09K8/584 ,  C09K8/594

Abstract: The invention relates to a method of extracting hydrocarbons from a subterranean formation, comprising: —injecting a surfactant composition into the subterranean formation, and —collecting hydrocarbons displaced by the injected surfactant composition; wherein the surfactant composition comprises at least one surfactant compound of formula (I): wherein x is an integer from 0 to 3, R1, R2, R3, R4 and each R are independently a hydrogen atom or an alkyl group, each A is an alkylene group, and the total number of carbon atoms in the surfactant compound of formula (I) is from 10 to 21. The invention also relates to a composition comprising liquid or supercritical carbon dioxide and at least one surfactant compound of formula (I).