METHODS FOR TREATING A SUBTERRANEAN WELL
    5.
    发明申请
    METHODS FOR TREATING A SUBTERRANEAN WELL 审中-公开
    用于处理下层井的方法

    公开(公告)号:US20150315456A1

    公开(公告)日:2015-11-05

    申请号:US14649220

    申请日:2013-11-21

    CPC classification number: C09K8/588 C09K8/5083 E21B43/16

    Abstract: Fluid compositions comprising water, an acid or an acid source, a chelating agent and a relative permeability modifier have utility in the context of matrix acidizing of oil bearing sandstone formations. Acidizing treatments with these compositions may improve the formation permeability to oil with respect to the permeability to water. The relative permeability modifier is a cationic polyacrylamide.

    Abstract translation: 包含水,酸或酸源,螯合剂和相对渗透性改性剂的流体组合物在含油砂岩地层的基质酸化的背景下具有效用。 使用这些组合物的酸化处理可以提高对水的渗透性对油的地层渗透性。 相对渗透性改性剂是阳离子聚丙烯酰胺。

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