Compositions and methods of catalyzing the rate of iron reduction during acid treatment of wells
    1.
    发明授权
    Compositions and methods of catalyzing the rate of iron reduction during acid treatment of wells 失效
    在井的酸处理期间催化铁还原速率的组成和方法

    公开(公告)号:US06308778B1

    公开(公告)日:2001-10-30

    申请号:US09512118

    申请日:2000-02-24

    IPC分类号: E21B4327

    CPC分类号: C09K8/72 Y10S507/933

    摘要: Methods and compositions for preventing precipitation of iron compounds during acid treatments of wells by catalyzing the rate of iron reduction during such treatments. Reduction of ferric ions is accelerated utilizing co-catalytic amounts of antimony ions in combination with other materials to minimize precipitation and other complications which result from iron compounds during acid treatments. Such other materials may include co-catalytic amounts of copper ions and optional iodide ions; as well as at least one of phosphinic acid, salt of phosphinic acid, or a mixture thereof.

    摘要翻译: 通过催化这种处理过程中的铁还原速率来防止在酸处理期间铁化合物沉淀的方法和组合物。 使用协同催化量的锑离子与其他材料组合来减少铁离子,以使在酸处理期间由铁化合物引起的沉淀和其它并发症最小化。 这种其它材料可以包括协同催化量的铜离子和任选的碘离子; 以及次膦酸,次膦酸的盐或其混合物中的至少一种。