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    Method for reducing filtrate loss from oil based drilling fluids
    1.
    发明授权
    Method for reducing filtrate loss from oil based drilling fluids 有权
    降低油基钻井液中滤液损失的方法

    公开(公告)号：US08962533B2

    公开(公告)日：2015-02-24

    申请号：US13145893

    申请日：2010-01-20

    申请人： Franco Federici ,  Thierry Bossi ,  Christian Parisi ,  Luigi Merli ,  Daniele Moro ,  Pierangelo Pirovano ,  Giuseppe Li Bassi

    发明人： Franco Federici ,  Thierry Bossi ,  Christian Parisi ,  Luigi Merli ,  Daniele Moro ,  Pierangelo Pirovano ,  Giuseppe Li Bassi

    IPC分类号： C09K8/12 ,  C09K8/508 ,  C09K8/32

    CPC分类号： C09K8/5083 ,  C09K8/32

    摘要： A method for reducing filtrate loss of oil based drilling fluids comprising the following steps: a) preparing by emulsion polymerization an aqueous dispersion containing: i) from 20% to 60% by weight of a copolymer comprising from 60% to 90% by weight of styrene and/or vinyltoluene monomers, from 7 to 40% by weight of 2-ethylhexyl acrylate monomers and from 0.01 to 3% of polyfunctional unsaturated monomers; ii) from 40 to 80% by weight of water; iii) from 0.1% to 5% by weight of at least one surfactant; b) providing an oil based drilling fluid containing the aqueous dispersion obtained from step a), or its copolymer in powder form; c) injecting and circulating the drilling fluid in the borehole.

    摘要翻译： 一种用于降低油基钻井液的滤液损失的方法，包括以下步骤：a）通过乳液聚合制备水分散体，其含有：i）20重量％至60重量％的包含60重量％至90重量％ 苯乙烯和/或乙烯基甲苯单体，7至40重量％的丙烯酸2-乙基己酯单体和0.01至3％的多官能不饱和单体; ii）40至80重量％的水; iii）0.1重量％至5重量％的至少一种表面活性剂; b）提供含有由步骤a）获得的水分散体或其粉末形式的共聚物的油基钻井液; c）在钻孔中注入和循环钻井液。

    METHOD FOR REDUCING FILTRATE LOSS FROM OIL BASED DRILLING FLUIDS
    2.
    发明申请
    METHOD FOR REDUCING FILTRATE LOSS FROM OIL BASED DRILLING FLUIDS 有权
    从油基钻井液中减少过滤器损失的方法

    公开(公告)号：US20110281778A1

    公开(公告)日：2011-11-17

    申请号：US13145893

    申请日：2010-01-20

    申请人： Franco Federici ,  Thierry Bossi ,  Christian Parisi ,  Luigi Merli ,  Daniele Moro ,  Pierangelo Pirovano ,  Giuseppe Li Bassi

    发明人： Franco Federici ,  Thierry Bossi ,  Christian Parisi ,  Luigi Merli ,  Daniele Moro ,  Pierangelo Pirovano ,  Giuseppe Li Bassi

    IPC分类号： C09K8/12

    CPC分类号： C09K8/5083 ,  C09K8/32

    摘要： A method for reducing filtrate loss of oil based drilling fluids comprising the following steps: a) preparing by emulsion polymerization an aqueous dispersion containing: i) from 20% to 60% by weight of a copolymer comprising from 60% to 90% by weight of styrene and/or vinyltoluene monomers, from 7 to 40% by weight of 2-ethylhexyl acrylate monomers and from 0.01 to 3% of polyfunctional unsaturated monomers; ii) from 40 to 80% by weight of water; iii) from 0.1% to 5% by weight of at least one surfactant; b) providing an oil based drilling fluid containing the aqueous dispersion obtained from step a), or its copolymer in powder form; c) injecting and circulating the drilling fluid in the borehole.

    摘要翻译： 一种用于降低油基钻井液的滤液损失的方法，包括以下步骤：a）通过乳液聚合制备水分散体，其含有：i）20重量％至60重量％的包含60重量％至90重量％ 苯乙烯和/或乙烯基甲苯单体，7至40重量％的丙烯酸2-乙基己酯单体和0.01至3％的多官能不饱和单体; ii）40至80重量％的水; iii）0.1重量％至5重量％的至少一种表面活性剂; b）提供含有由步骤a）获得的水分散体或其粉末形式的共聚物的油基钻井液; c）在钻孔中注入和循环钻井液。

    Swelling Inhibitors for Clays and Shales
    6.
    发明申请
    Swelling Inhibitors for Clays and Shales 审中-公开
    膨胀抑制剂用于粘土和页岩

    公开(公告)号：US20090239771A1

    公开(公告)日：2009-09-24

    申请号：US12441269

    申请日：2007-09-11

    申请人： Franco Federici ,  Luigi Merli ,  Laura Vigano ,  Lorena Bottarello ,  Thierry Bossi ,  Giuseppe Li Bassi

    发明人： Franco Federici ,  Luigi Merli ,  Laura Vigano ,  Lorena Bottarello ,  Thierry Bossi ,  Giuseppe Li Bassi

    IPC分类号： C09K8/22

    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.

    摘要翻译： 用于在钻井操作期间抑制粘土和页岩水化的方法，包括使用水基钻井液，其含有0.2至5重量％的具有4至10个碳原子的二羧酸与链烷醇胺，二胺或二胺的缩合产物 式R“R''N-R'-XH的聚亚烷基二胺，其中X是O或NRO; R 0是氢或具有1至6个碳原子的直链或支链烷基，R'是具有2至10个碳原子的直链或支链，脂族或环脂族亚烷基或者R'是R“'（NH- R“'）n，其中R”'是亚乙基或CH（CH 3）CH 2，n是1至6的数，X是NR 0; R“和R”可以彼此相同或不同，并且是氢或具有1-6个碳原子的直链或支链烷基，任选被羟基取代，缩合产物为中性形式或在 盐的形式。