Compositions for use in oil recovery and method of use
    1.
    发明授权
    Compositions for use in oil recovery and method of use 失效
    用于油回收的组合物和使用方法

    公开(公告)号:US4501673A

    公开(公告)日:1985-02-26

    申请号:US363864

    申请日:1982-03-31

    摘要: Betaines containing the pyridine nucleus, some of which are novel per se, are dissolved in sea water or formation water, the concentration of betaine being from 200 to 100,000 ppm, to give a surfactant solution suitable for displacing crude oil from a formation in an enhanced oil recovery process. These betaines have low interfacial tension (against oil), a high tolerance towards divalent metal ions and good temperature stability as compared with betaines previously proposed for enhanced oil recovery.

    摘要翻译: 含有吡啶核的甜菜碱,其中一些本身是新颖的,溶解在海水或地层水中,甜菜碱的浓度为200至100,000ppm,得到适于从增强的地层中移出原油的表面活性剂溶液 采油过程。 与以前提出的用于提高采收率的甜菜碱相比,这些甜菜碱具有低的界面张力(对油),对二价金属离子的高耐受性和良好的温度稳定性。