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    HF acidizing compositions and methods for improved placement in a subterranean formation to remediate formation damage
    1.
    发明申请
    HF acidizing compositions and methods for improved placement in a subterranean formation to remediate formation damage 审中-公开
    HF酸化组合物和改进放置在地层中以补救地层损伤的方法

    公开(公告)号：US20090156433A1

    公开(公告)日：2009-06-18

    申请号：US12001833

    申请日：2007-12-12

    申请人： Amare Mebratu ,  Olav Martin Selle

    发明人： Amare Mebratu ,  Olav Martin Selle

    IPC分类号： C09K8/68

    CPC分类号： C09K8/74 ,  C09K8/76

    摘要： According to the invention, a fully viscosified acid diversion system for hydrofluoric acid has been developed. The viscosifying agent comprises a xanthan polymer or a derivative thereof. A method of acidizing a portion of a subterranean formation is provided, the method comprising the steps of: (A) forming a viscosified treatment fluid comprising: (i) water; (ii) hydrogen fluoride or a controlled-release source of hydrogen fluoride; and (iii) a gelling agent comprising a xanthan polymer or derivative thereof; and (B) introducing the viscosified treatment fluid into the portion of the subterranean formation. A breaking agent can be used to achieve a controlled gel break time under downhole conditions. Other additives can also be included in the treatment fluid. A composition for use in treating a subterranean formation is also provided, the composition comprising: (A) water; (B) hydrogen fluoride or a controlled-release source of hydrogen fluoride; and (C) a gelling agent that comprises a xanthan or derivative thereof.

    摘要翻译： 根据本发明，已经开发了一种用于氢氟酸的完全稠化的酸分散体系。 增粘剂包括黄原胶聚合物或其衍生物。 提供了一种酸化部分地下地层的方法，该方法包括以下步骤：（A）形成粘稠的处理流体，其包括：（i）水; （ii）氟化氢或氟化氢的控制释放源; 和（iii）包含黄原胶聚合物或其衍生物的胶凝剂; 和（B）将增稠的处理流体引入到地层的部分中。 破碎剂可用于在井下条件下实现受控的凝胶断裂时间。 其他添加剂也可以包含在处理液中。 还提供了一种用于处理地下地层的组合物，该组合物包含：（A）水; （B）氟化氢或氟化氢的控制释放源; 和（C）包含黄原胶或其衍生物的胶凝剂。