公开(公告)号：WO2015038912A1

公开(公告)日：2015-03-19

申请号：PCT/US2014/055422

申请日：2014-09-12

Applicant: GENERAL ELECTRIC COMPANY

Inventor： WEIMER, Lanny Dale ,  HAUSSMANN, Christian Ulrich ,  SEGERSTROM, John Archer

IPC: C09K8/592 ,  E21B36/00 ,  E21B43/24 ,  C02F1/42 ,  C02F1/44 ,  C02F1/66

CPC classification number: C02F9/00 ,  C02F1/20 ,  C02F1/40 ,  C02F1/42 ,  C02F1/441 ,  C02F1/442 ,  C02F1/66 ,  C02F5/025 ,  C02F2101/101 ,  C02F2101/32 ,  C02F2103/10 ,  C02F2303/22 ,  C09K8/592 ,  E21B43/24 ,  Y02P20/544

Abstract: Water, for example produced water, is treated to make it more suitable for use in an oil field recovery process. In the oil filed recovery process, the treated water is pressurized and heated to supercritical conditions in a steam generator, preferably a Once Through Steam Generator (OTSG), to result in a supercritical dense phase fluid, which is then injected into oil bearing formations for the purpose of enhanced oil production. The treatment includes softening and decarbonation. The water is preferably acidified before decarbonation. There may be a step of sulfate removal. Softening may be by ion exchange or membrane separation. Sulfate may be removed by ion exchange.

Abstract translation: 水，例如生产的水被处理以使其更适合用于油田回收过程。 在油田回收过程中，处理过的水在蒸汽发生器，优选一次蒸汽发生器（OTSG）中被加压并加热至超临界条件，以产生超临界致密相流体，然后将其注入含油层中 增加石油生产的目的。 处理包括软化和脱碳。 脱水前优选将酸酸化。 可能有一个硫酸盐去除的步骤。 软化可能是通过离子交换或膜分离。 硫酸盐可以通过离子交换去除。