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    • 10. 发明授权
    • Enhanced oil recovery technique
    • 增强采油技术
    • US5915477A
    • 1999-06-29
    • US785313
    • 1997-01-21
    • Lon Allan StuebingerHoward L. McKinzieKevin R. Bowlin
    • Lon Allan StuebingerHoward L. McKinzieKevin R. Bowlin
    • E21B43/20E21B43/30E21B43/40E21B43/24
    • E21B43/30E21B43/20E21B43/40
    • This invention relates to enhanced oil recovery (EOR) techniques for improving the production economies and recovery efficiency of hydrocarbons from a reservoir after primary depletion has occurred. The reservoir has at least two production strata. At least one production well capable of producing fluids from both strata is placed into the reservoir. At least one injection well capable of injecting fluid into both strata is placed in the reservoir. At least one combination production/injection well for producing well fluid from only one of the strata is placed into the reservoir. The produced well fluid is separated into a mostly hydrocarbon component and a mostly water component in place downhole and reinjecting into the other of said strata the mostly water component by use of the combination production/injection well.
    • 本发明涉及提高采收率(EOR)技术,用于提高发生初次耗尽后的储层中碳氢化合物的生产经济性和回收效率。 水库至少有两个生产层。 至少一个能够从两层产生流体的生产井放入储存器中。 至少有一个能够将流体注入两层的注入井被放置在储存器中。 至少一个组合生产/注入井用于从仅一个地层生产井液被放置到储层中。 所生产的良好流体被分解成大部分为烃组分,并且大部分为水中的水分,并且通过使用组合生产/注入井将大多数水组分重新注入所述地层中的另一个。