DOWN-HOLE PLACEMENT OF WATER-SWELLABLE POLYMERS
    1.
    发明申请
    DOWN-HOLE PLACEMENT OF WATER-SWELLABLE POLYMERS 审中-公开
    水溶性聚合物的下孔放置

    公开(公告)号:US20130000900A1

    公开(公告)日:2013-01-03

    申请号:US13175465

    申请日:2011-07-01

    IPC分类号: A47B43/00 C09K8/44

    CPC分类号: C09K8/035 C09K8/36 C09K8/512

    摘要: Methods and fluids are provided for the placement of a water-swellable polymer into a subterranean formation. The methods and fluids include a placement fluid that has an acidic aqueous phase. The water-swellable polymer does not substantially swell in the acidic aqueous phase. The acid is allowed or caused to be spent downhole, whereby the water-swellable polymer can then swell in the formation. In an embodiment, an oil-external emulsion having an internal acidic water phase is provided for placement of a water-swellable polymer into a subterranean formation. Preferably, the oil-external emulsion is adapted to break as the acid contained in the internal water phase is allowed or caused to be spent downhole.

    摘要翻译: 提供了将水溶胀性聚合物置于地层中的方法和流体。 方法和流体包括具有酸性水相的放置液。 水溶胀性聚合物在酸性水相中基本上不膨胀。 酸被允许或被引入井下,由此水溶胀性聚合物然后可以在地层中膨胀。 在一个实施方案中,提供具有内部酸性水相的油外部乳液用于将水溶胀性聚合物置于地层中。 优选地,油外部乳液适于断裂,因为内部水相中所含的酸被允许或被引入井下。