Matrix treatment of damaged sandstone formations using buffered HF-acidizing solutions
    1.
    发明申请
    Matrix treatment of damaged sandstone formations using buffered HF-acidizing solutions 审中-公开
    使用缓冲HF酸化溶液对受损砂岩地层进行基质处理

    公开(公告)号:US20060131022A1

    公开(公告)日:2006-06-22

    申请号:US11297824

    申请日:2005-12-08

    IPC分类号: E21B43/27

    CPC分类号: C09K8/72 E21B43/25

    摘要: Sandstone formations of oil and gas and geothermal wells are effectively stimulated when a buffered HF-sandstone acidizing solution is employed without the prior introduction of an acid containing preflush solution. By not using a preflush solution, buffered HF-sandstone acidizing solutions are highly effective in dissolving and removing siliceous material while minimizing the formation of calcium fluoride.

    摘要翻译: 当使用缓冲的HF砂岩酸化溶液而不先前引入含酸预冲洗溶液时,有效地刺激油气和地热井的砂岩组成。 通过不使用预冲洗溶液,缓冲的HF-砂岩酸化溶液在溶解和除去硅质材料同时最小化氟化钙的形成方面是非常有效的。