FILTERCAKE REMOVAL COMPOSITION AND SYSTEM
    2.
    发明申请
    FILTERCAKE REMOVAL COMPOSITION AND SYSTEM 失效
    滤芯去除组合物和系统

    公开(公告)号:US20100167962A1

    公开(公告)日:2010-07-01

    申请号:US12720886

    申请日:2010-03-10

    IPC分类号: C09K8/90 C09K8/86 C09K8/74

    CPC分类号: C09K8/52 C09K8/72

    摘要: A treatment fluid and system are disclosed for cleaning borehole filtercake using the treatment fluid, wherein the filtercake contains reservoir drilling fluid (RDF) solids. The treatment fluid comprises a fluoride source providing a 1.2 to 5 molar fluoride concentration, and another acid or combination of acids to provide a pH between 1.8 and 5. The treatment fluid is balanced for a dissolving power high enough to have significant dissolution of the filtercake, but low enough for even propagation to avoid premature leak-off.

    摘要翻译: 公开了一种用于使用处理流体清洁钻孔滤饼的处理流体和系统,其中滤饼包含储层钻井液(RDF)固体。 处理流体包括提供1.2至5摩尔浓度的氟化物浓度的氟化物源,以及另一种酸或酸的组合以提供1.8至5之间的pH。处理流体的平衡溶解力足够高以使滤饼具有显着溶解 ,但足够低以便均匀传播以避免过早的泄漏。

    Filtercake removal composition and system
    3.
    发明授权
    Filtercake removal composition and system 失效
    滤饼去除组成和系统

    公开(公告)号:US08114817B2

    公开(公告)日:2012-02-14

    申请号:US12720886

    申请日:2010-03-10

    CPC分类号: C09K8/52 C09K8/72

    摘要: A treatment fluid and system are disclosed for cleaning borehole filtercake using the treatment fluid, wherein the filtercake contains reservoir drilling fluid (RDF) solids. The treatment fluid comprises a fluoride source providing a 1.2 to 5 molar fluoride concentration, and another acid or combination of acids to provide a pH between 1.8 and 5. The treatment fluid is balanced for a dissolving power high enough to have significant dissolution of the filtercake, but low enough for even propagation to avoid premature leak-off.

    摘要翻译: 公开了一种用于使用处理流体清洁钻孔滤饼的处理流体和系统,其中滤饼包含储层钻井液(RDF)固体。 处理流体包括提供1.2至5摩尔浓度的氟化物浓度的氟化物源,以及另一种酸或酸的组合以提供1.8至5之间的pH。处理流体的平衡溶解力足够高以使滤饼显着溶解 ,但足够低以便均匀传播以避免过早的泄漏。

    Filtercake removal
    6.
    发明授权
    Filtercake removal 失效
    滤饼去除

    公开(公告)号:US07712536B2

    公开(公告)日:2010-05-11

    申请号:US11947439

    申请日:2007-11-29

    IPC分类号: E21B21/00

    CPC分类号: C09K8/52 C09K8/72

    摘要: A treatment fluid and a method are disclosed for cleaning borehole filtercake using the treatment fluid, wherein the filtercake contains reservoir drilling fluid (RDF) solids. The method includes pumping the treatment fluid downhole in contact with the filtercake to be removed to establish a differential pressure between the treatment fluid and the formation adjacent the filtercake, and evenly propagating treatment of the filtercake during the differential pressure period to delay breakthrough by the treatment fluid for a period from 1 to 12 hours. The treatment fluid comprises a fluoride source providing a 1.2 to 5 molar fluoride concentration, and another acid or combination of acids to provide a pH between 1.8 and 5. The treatment fluid is balanced for a dissolving power high enough to have significant dissolution of the filtercake, but low enough for even propagation to avoid premature leak-off.

    摘要翻译: 公开了一种用于使用处理流体清洁钻孔滤饼的处理流体和方法,其中滤饼包含储层钻井液(RDF)固体。 该方法包括泵送与要除去的滤饼接触的处理液,以在处理流体和邻近滤饼的地层之间建立差压,并且在差压期间均匀地传播滤饼的处理以延迟通过处理的突破 流体1至12小时。 处理流体包括提供1.2至5摩尔浓度的氟化物浓度的氟化物源,以及另一种酸或酸的组合以提供1.8至5之间的pH。处理流体的平衡溶解力足够高以使滤饼显着溶解 ,但足够低以便均匀传播以避免过早的泄漏。

    Filtercake Removal
    7.
    发明申请
    Filtercake Removal 失效
    滤饼去除

    公开(公告)号:US20090139723A1

    公开(公告)日:2009-06-04

    申请号:US11947439

    申请日:2007-11-29

    IPC分类号: E21B37/08 C09K8/52

    CPC分类号: C09K8/52 C09K8/72

    摘要: A treatment fluid and a method are disclosed for cleaning borehole filtercake using the treatment fluid, wherein the filtercake contains reservoir drilling fluid (RDF) solids. The method includes pumping the treatment fluid downhole in contact with the filtercake to be removed to establish a differential pressure between the treatment fluid and the formation adjacent the filtercake, and evenly propagating treatment of the filtercake during the differential pressure period to delay breakthrough by the treatment fluid for a period from 1 to 12 hours. The treatment fluid comprises a fluoride source providing a 1.2 to 5 molar fluoride concentration, and another acid or combination of acids to provide a pH between 1.8 and 5. The treatment fluid is balanced for a dissolving power high enough to have significant dissolution of the filtercake, but low enough for even propagation to avoid premature leak-off.

    摘要翻译: 公开了一种用于使用处理流体清洁钻孔滤饼的处理流体和方法,其中滤饼包含储层钻井液(RDF)固体。 该方法包括泵送与要除去的滤饼接触的处理液,以在处理流体和邻近滤饼的地层之间建立差压,并且在差压期间均匀地传播滤饼的处理以延迟通过处理的突破 流体1至12小时。 处理流体包括提供1.2至5摩尔浓度的氟化物浓度的氟化物源,以及另一种酸或酸的组合以提供1.8至5之间的pH。处理流体的平衡溶解力足够高以使滤饼显着溶解 ,但足够低以便均匀传播以避免过早的泄漏。