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    SWELLING INHIBITORS FOR CLAYS AND SHALES
    5.
    发明公开
    SWELLING INHIBITORS FOR CLAYS AND SHALES 有权
    SCHWELLHEMMER声音和页岩

    公开(公告)号：EP2061856A1

    公开(公告)日：2009-05-27

    申请号：EP07820106.8

    申请日：2007-09-11

    申请人： Lamberti Spa

    发明人： FEDERICI, Franco ,  MERLI, Luigi ,  VIGANO', Laura ,  BOTTARELLO, Lorena ,  BOSSI, Thierry ,  LI BASSI, Giuseppe

    IPC分类号： C09K8/22 ,  C09K8/52

    CPC分类号： C09K8/22 ,  C09K8/12 ,  C09K2208/12

    摘要： Method for inhibiting the hydration of clays and shales during drilling operations comprising the use of a water base drilling fluid, which contains from 0.2 to 5 % by weight of the condensation product of a dicarboxylic acid having 4 to 10 carbon atoms with alkanolamines, diamines or polyalkyleneamines of formula R''R'N-R'-XH, where X is O or NR0; R0 is hydrogen or a linear or branched alkyl group having from 1 to 6 carbon atoms, R' is a linear or branched, aliphatic or cicloaliphatic alkylene group having from 2 to 10 carbon atoms or R' is R””(NH-R””)n where R”” is ethylene or CH(CH3)CH2, n is a number from 1 to 6 and X is NR0; R' and R'' can be equal or different from one another and are hydrogen or a linear or branched alkyl group having from 1 to 6 carbon atoms, optionally substituted with a hydroxyl group, the condensation product being in neutral form or in the form of salt.

    SHALE HYDRATION INHIBITION AGENT AND METHOD OF USE
    6.
    发明公开
    SHALE HYDRATION INHIBITION AGENT AND METHOD OF USE 有权
    地衣水化抑制剂及使用方法

    公开(公告)号：EP1805277A2

    公开(公告)日：2007-07-11

    申请号：EP05807560.7

    申请日：2005-10-04

    申请人： M-I L.L.C.

    发明人： PATEL, Arvind, D. ,  STAMATAKIS, Emanuel

    IPC分类号： C09K8/06

    CPC分类号： C09K8/22 ,  C09K8/20 ,  C09K8/24 ,  C09K8/68 ,  C09K2208/12

    摘要： A water-base fluid for use in drilling, cementing, workover, fracturing and abandonment of subterranean wells through a formation containing shale which swells in the presence of water. In one illustrative embodiment, the drilling fluid is composed of an aqueous based continuous phase, a weighting agent, and a shale hydration inhibition agent. The shale hydration inhibition agent should have the general formula (I): in which R and R' independently selected from hydrogen, methyl, ethyl or propyl, and X has a value from 1 to 6. The shale hydration inhibition agent is present in sufficient concentration to substantially reduce the swelling of shale drilling cuttings upon contact with the drilling fluid. The drilling fluid may be formulated to include a wide variety of components of aqueous based drilling fluids, such as weighting agents, fluid loss control agents, suspending agents, viscosifying agents, rheology control agents, as well as other compounds and materials known to one of skill in the art. The fluids may also be used in fracturing and the disposal by reinjection of drilling cutting into a selected subterranean disposal formation.

    摘要翻译： 一种水基流体，用于通过含有在水存在下膨胀的页岩的地层钻井，固井，修井，压裂和放弃地下井。 在一个说明性实施例中，钻井液由水基连续相，增重剂和页岩水化抑制剂组成。 页岩水化抑制剂应该具有通式（I）：其中R和R'独立地选自氢，甲基，乙基或丙基，并且X具有1-6的值。页岩水化抑制剂以足够的量存在 浓度以在与钻井液接触时显着降低页岩钻屑的膨胀。 钻井液可以配制成包括水基钻井液的各种组分，如增重剂，失水控制剂，悬浮剂，增粘剂，流变控制剂，以及其它化合物和已知的其它化合物和材料 本领域的技能。 流体也可以用于压裂和处理，通过将钻孔切割回注到选定的地下处置地层中。

    SHALE HYDRATION INHIBITION AGENT AND METHOD OF USE
    8.
    发明公开
    SHALE HYDRATION INHIBITION AGENT AND METHOD OF USE 审中-公开
    地衣水化抑制剂及使用方法

    公开(公告)号：EP1341869A2

    公开(公告)日：2003-09-10

    申请号：EP01993658.2

    申请日：2001-11-13

    申请人： M-I L.L.C.

    发明人： PATEL, Arvind, D. ,  STAMATAKIS, Emanuel ,  DAVIS, Eric

    IPC分类号： C09K7/02

    CPC分类号： C09K8/22 ,  C09K8/206 ,  C09K8/24 ,  C09K2208/12 ,  Y10S507/905

    摘要： A water-base drilling fluid for use in drilling wells through a formation containing a shale which swells in the presence of water. The drilling fluid preferably includes: an aqueous based continuous phase, a weight material, and a shale hydration inhibition agent having the formula: H2N - R - {OR'}x - Y, in which R and R' are alkylene groups having 1 to to 6 carbon atoms and x is a value from about 1 to about 25. The Y group should be an amine or alkoxy group, preferably a primary amine or a methoxy group. The shale hydration inhibition agent should be present in sufficient concentration to reduce the swelling of the shale. Also inclusive of the present invention is a method of reducing the swelling of shale clay encountered during the drilling of a subterranean well, the method comprising circulating in the well a water-base fluid formulated in accordance with the present invention.

    摘要翻译： 一种水基钻井液，用于通过含有在水存在下膨胀的页岩的地层钻井。 钻井液优选包括：水基连续相，重量物质和具有下式的页岩水化抑制剂：H2N-R- {OR'} x-Y，其中R和R'是具有1至1的亚烷基 至6个碳原子，并且x是约1至约25的值.Y基团应该是胺或烷氧基，优选伯胺或甲氧基。 页岩水化抑制剂应该以足够的浓度存在以减少页岩的膨胀。 本发明还包括减少在地下钻井过程中遇到的页岩粘土膨胀的方法，该方法包括在井中循环根据本发明配制的水基流体。