FOAMING FORMULATIONS FOR ASSISTED OIL RECOVERY

    公开(公告)号:US20220145167A1

    公开(公告)日:2022-05-12

    申请号:US17433163

    申请日:2020-02-14

    摘要: The invention relates to a composition C which comprises, in an aqueous medium M: surfactants suitable for creating a foam in the presence of a gas; and polymers P based on acrylamide or acrylamido units, having a molecular mass of 1,000,000 to 20,000,000 g/mol; or: composition C has a viscosity of less than 6 mPa·s; and the content of polymer P is greater than the concentration limit beyond which the apparent viscosity of a foam obtained from composition C is greater by at least 10% than the apparent viscosity of a foam obtained from the same composition but deprived of polymers. The invention further relates to the use of these compositions as foaming compositions for EOR.

    Aminosulphonate foam stabilizers
    7.
    发明授权

    公开(公告)号:US10370583B2

    公开(公告)日:2019-08-06

    申请号:US15311305

    申请日:2015-05-04

    申请人: RHODIA OPERATIONS

    摘要: The present invention relates to the use of an aminosulphonate compound corresponding to the following formula (I): R1R2N—CHR3—CHR4—CHR5—SO3− (I) where: •R1 is a preferably C2 to C24 alkyl or alkylamido radical; •R2 is an optionally hydroxylated alkyl radical; •R3, R4 and R5 are, independently of one another, H or OH; it being understood that at least one of the R3, R4 and/or R5 groups is OH, for stabilizing a foam, in particular a foam used to extract hydrocarbons in an underground formation.

    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

    申请人: RHODIA OPERATIONS

    摘要: 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
    9.
    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

    IPC分类号: C09K8/584 E21B43/16

    CPC分类号: C09K8/584 E21B43/16

    摘要: 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.

    摘要翻译: 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。