Tertiary recovery process
    2.
    发明授权
    Tertiary recovery process 失效
    三级恢复过程

    公开(公告)号:US4207946A

    公开(公告)日:1980-06-17

    申请号:US925334

    申请日:1978-07-17

    IPC分类号: C09K8/88 E21B43/22

    CPC分类号: C09K8/882 Y10S507/936

    摘要: A process for recovering hydrocarbons from a hydrocarbon-bearing formation penetrated by an injection well and a production well which comprises injecting an aqueous solution of a vinylpyrrolidone polymer into the formation to condition the reservoir, in a first step injecting an aqueous surfactant solution into the formation and recovering hydrocarbons via the said production well. The pretreatment of the formation with the vinylpyrrolidone polymer reduces the consumption or loss of surfactant and thus improves the efficiency of the process. Optionally, after the injection of the aqueous surfactant solution an aqueous drive fluid is injected into the formation.

    摘要翻译: 从注入井和生产井渗透的含烃地层中回收烃的方法,包括将乙烯基吡咯烷酮聚合物的水溶液注入地层以调节储存器,第一步骤将表面活性剂水溶液注入地层 并通过所述生产井回收碳氢化合物。 用乙烯基吡咯烷酮聚合物预处理形成会降低表面活性剂的消耗或损失,从而提高了工艺的效率。 任选地,在注入表面活性剂水溶液后,将水性驱动流体注入到地层中。