Scleroglucan based drilling mud
    1.
    发明授权
    Scleroglucan based drilling mud 失效
    基于硬木葡聚糖的钻井泥浆

    公开(公告)号:US5612294A

    公开(公告)日:1997-03-18

    申请号:US373494

    申请日:1995-01-17

    IPC分类号: C09K8/08 C09K8/20 C09K7/02

    CPC分类号: C09K8/08 C09K8/206

    摘要: Base composition for water-based drilling muds allowing the number and the amount of the other constituents of the mud to be restricted. In addition to the base solvent, fresh water, sea water or salt water, the said base composition comprises scleroglucan as viscosity agent, the mycelium which produced it and bentonite or an equivalent in limited amount.

    摘要翻译: 用于水基钻井泥浆的基础组成,允许限制泥浆的其他成分的数量和数量。 除了碱性溶剂,淡水,海水或盐水之外,所述的基础组合物包括硬木葡聚糖作为粘度剂,产生它的菌丝体和膨润土或有限量的等效物。

    Application of muds containing scleroglucan to drilling large diameter
wells
    2.
    发明授权
    Application of muds containing scleroglucan to drilling large diameter wells 失效
    应用含有硬皮葡聚糖的泥浆钻大口径井

    公开(公告)号:US5525587A

    公开(公告)日:1996-06-11

    申请号:US332749

    申请日:1994-11-03

    IPC分类号: C09K8/08 C09K8/20 C09K7/02

    CPC分类号: C09K8/206 C09K8/08

    摘要: The present inventors found that the addition of scleroglucan, in particular of unrefined scleroglucan, to the water employed as drilling fluid for drilling wells requiring a high flow rate made it possible to limit formation leaching and improved the removal of cuttings.The invention may be applied to drilling of large-diameter wells.

    摘要翻译: 本发明人发现,将硬质葡聚糖,特别是未精制的硬葡聚糖添加到用作需要高流速的钻井用钻井液的水中,可以限制地层浸出并改善切屑的去除。 本发明可以应用于大口径钻井。

    Process for enhancing oil recovery using scleroglucan powders
    3.
    发明授权
    Process for enhancing oil recovery using scleroglucan powders 失效
    使用硬皮葡聚糖粉增强油回收的方法

    公开(公告)号:US5323857A

    公开(公告)日:1994-06-28

    申请号:US8307

    申请日:1993-01-25

    摘要: The present invention is directed to a process for improving the dispersibility and the filterability of scleroglucan powders, in which a surfactant is incorporated in the coagulated polymer. The powder obtained according to the process has a dispersibility and a filterability after drying of the coagulum which are greatly superior to those of a powder treated after drying with the same quantity of surfactant or of a powder in solution treated with this same quantity of surfactant. The present invention is also directed to methods for preventing the sudden rush of well water into the strata of petroleum fields, to methods for modifying the injection profile, and to methods for improved hydrocarbon recovery from petroleum fields.

    摘要翻译: 本发明涉及提高硬化葡聚糖粉末的分散性和过滤性的方法,其中表面活性剂掺入凝结聚合物中。 根据该方法获得的粉末具有在用相同量的表面活性剂处理的溶液中用相同量的表面活性剂或粉末在干燥后干燥后的分散性和过滤性大大优于用干燥后的粉末处理的粉末。 本发明还涉及用于防止井水突然涌入石油地层的方法,改进喷射曲线的方法,以及用于改善从石油田中回收烃的方法。

    Application of scleroglucan muds to drilling deviated wells
    5.
    发明授权
    Application of scleroglucan muds to drilling deviated wells 失效
    应用硬木素泥浆钻井偏心井

    公开(公告)号:US5330015A

    公开(公告)日:1994-07-19

    申请号:US920280

    申请日:1992-10-13

    CPC分类号: C09K8/08 C09K8/206

    摘要: A method for drilling deviated or horizontal wells is facilitated by the use of a scleroglucan-containing aqueous drilling mud. The use of such drilling muds is environmentally and economically advantageous over the use of oil-based drilling muds and is superior to the use of other aqueous-based drilling muds in terms of lubricating power and carrying capacity. Preferably the drilling mud contains unrefined scieroglucan.

    摘要翻译: PCT No.PCT / FR91 / 01032 Sec。 371日期:1992年10月13日 102(e)日期1992年10月13日PCT 1991年12月19日PCT PCT。 公开号WO92 / 11340 日期:1992年7月9日。通过使用含有硬木素的含水钻井泥浆促进钻井偏斜井或水平井的方法。 使用这种钻井泥浆在使用油基钻井泥浆方面具有环境和经济上的优点,并且在润滑功率和承载能力方面优于使用其它水性钻井泥浆。 钻井泥浆最好含有未精制的葡聚糖。