Micellar systems containing N-acyl N-alkyl .alpha.-amino-carboxylic
compounds, particularly useful in enhanced hydrocarbon recovery
    4.
    发明授权
    Micellar systems containing N-acyl N-alkyl .alpha.-amino-carboxylic compounds, particularly useful in enhanced hydrocarbon recovery 失效
    含有N-酰基N-烷基α-氨基 - 羧酸化合物的胶束体系,特别可用于增强烃回收

    公开(公告)号:US4686053A

    公开(公告)日:1987-08-11

    申请号:US725729

    申请日:1985-04-22

    IPC分类号: B01F17/28 C09K8/584 E21B43/22

    CPC分类号: C09K8/584 Y10S507/938

    摘要: In the preparation of miceller systems for enhanced hydrocarbon recovery, surfactants are used which consist of N-acyl N-alkyl-.alpha.-amino-carboxylic compounds. The considered products comply with the general formulas: ##STR1## wherein at least one of R.sup.1, R.sup.2 and R.sup.3 is a saturated or unsaturated C.sub.1 -C.sub.22 aliphatic hydrocarbon radical (one of them having optionally a carboxylic group) the other or others being a hydrogen atom, R.sup.1, R.sup.2 and R.sup.3 having together from 4 to 22 carbon atoms, R.sup.4 is an alkyl radical of 1-5 carbon atoms, R.sup.5 an alkyl radical of 1-12 carbon atoms and M is an alkali or alkaline-earth metal, ammonium or a quaternary ammonium group.As used in the formation of micellar systems (aqueous solutions, emulsions or mirco-emulsions) for enhanced oil recovery, these surfactants have improved performances, particularly, in field waters of high polyvalent ion (Ca.sup.++ and Mg.sup.++) content, within relatively wide temperature and pH ranges.

    摘要翻译: 在制备用于提高烃回收率的胶束系统中,使用由N-酰基N-烷基-α-氨基 - 羧酸化合物组成的表面活性剂。 所考虑的产品符合以下通式:其中R 1,R 2和R 3中的至少一个是饱和或不饱和的C 1 -C 22脂族烃基(其中一个具有任选的羧基),另一个或其它是氢 原子,R 1,R 2和R 3具有4至22个碳原子,R 4是1-5个碳原子的烷基,R 5是1-12个碳原子的烷基,M是碱金属或碱土金属,铵 或季铵基团。 在用于增强油采收率的胶束体系(水溶液,乳液或微乳液)的形成中,这些表面活性剂具有改善的性能,特别是在相对宽的温度下,在高多价离子(Ca ++和Mg ++)含量的场水中, pH范围。