Downhole gas separation method and system
    40.
    发明授权
    Downhole gas separation method and system 有权
    井下气体分离方法及系统

    公开(公告)号:US06755251B2

    公开(公告)日:2004-06-29

    申请号:US10234907

    申请日:2002-09-04

    IPC分类号: E21B4308

    摘要: The invention is a method and system of separating a multi-component fluid in a wellbore. At least one fluid separation membrane comprising a feed side and a permeate side is incorporated in the wellbore. A flowing stream of the multi-component fluid obtained from a subterranean zone being in fluid communication with the wellbore is passed across the feed side of the membrane at a first pressure. A retentate stream depleted in at least one component compared to the multi-component fluid is withdrawn from the feed side of the membrane and passed to the earth's surface. A permeate stream at a second pressure is withdrawn from the permeate side, in which the permeate stream is enriched in at least one component compared with the multi-component fluid. The second pressure is controlled to maintain the second pressure below the first pressure.

    摘要翻译: 本发明是一种在井眼中分离多组分流体的方法和系统。 包含进料侧和渗透侧的至少一个流体分离膜被并入井筒中。 从与井筒流体连通的地下区域获得的多组分流体的流动流在第一压力下穿过膜的进料侧。 与多组分流体相比,消耗至少一种组分的滞留物流从膜的进料侧排出并传递到地球表面。 渗透物流从第二压力排出,渗透物流与多组分流体相比富含至少一种成分。 控制第二压力以将第二压力保持在第一压力以下。