Formulations for enhanced oil recovery comprising sulfonates

    公开(公告)号:US10800962B2

    公开(公告)日:2020-10-13

    申请号:US15572401

    申请日:2016-05-04

    Abstract: Compositions suitable for enhanced oil recovery comprising a) a mixture of a-sulfocarbonyl compounds of formula (1) and (2) in a mixture ratio (1) to (2) of from 1:99 to 99:1 wherein R1, R3 and R5, which may be the same or different at each occurrence, are hydrogen or a linear or branched alkyl chain having 1 to 20 carbon atoms, R2 and R4, which may be the same or different at each occurrence, may be a linear or branched alkyl group having 4 to 24 carbon atoms and in which the alkyl chain may comprise one or more cycloaliphatic groups, and X is H or a metal forming a salt with the sulfonate group, and b) a salt containing aqueous solution.

    DESORBANTS FOR ENHANCED OIL RECOVERY
    7.
    发明申请
    DESORBANTS FOR ENHANCED OIL RECOVERY 有权
    加强油回收的解决方案

    公开(公告)号:US20150291875A1

    公开(公告)日:2015-10-15

    申请号:US14373648

    申请日:2013-01-25

    CPC classification number: C09K8/584 E21B43/16

    Abstract: The invention relates to the use of at least one compound corresponding to the following formula: R—O—(—CH2-CH(CH3)-O-)m-(—CH2-CH2-0-)u-H where: R is a hydrocarbon-based group comprising from 6 to 40 carbons; m ranges from 0 to 20; n, which is greater than m, ranges from 5 to 40, in order to inhibit the phenomena of retention of anionic surfactants within an oil-bearing reservoir, in particular within a carbonate or clay reservoir.

    Abstract translation: 本发明涉及至少一种对应于下式的化合物的用途:R-O - ( - CH 2 -CH(CH 3)-O-)m - ( - CH 2 -CH 2 O-)u H其中:R是 包含6至40个碳的烃基; m范围为0〜20; n大于m,范围为5至40,以抑制阴离子表面活性剂在含油储层内,特别是在碳酸盐或粘土储层内的保留现象。

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