利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

100 条记录 (耗时 0.018 秒)

    METHOD FOR REDUCING FILTRATE LOSS FROM OIL BASED DRILLING FLUIDS
    43.
    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。

    GLYOXAL FREE PURIFIED CATIONIC POLYGALACTOMANNAN
    44.
    发明申请
    GLYOXAL FREE PURIFIED CATIONIC POLYGALACTOMANNAN 有权
    GLYOXAL FREE PURIFIED CTICIC POLYGALACTOMANNAN

    公开(公告)号：US20110166341A1

    公开(公告)日：2011-07-07

    申请号：US12986785

    申请日：2011-01-07

    申请人： Ugo Pfeiffer ,  Mauro Tenconi ,  Eva Baldaro ,  Valentina Langella ,  Giovanni Floridi ,  Giuseppe Li Bassi

    发明人： Ugo Pfeiffer ,  Mauro Tenconi ,  Eva Baldaro ,  Valentina Langella ,  Giovanni Floridi ,  Giuseppe Li Bassi

    IPC分类号： C08B37/00

    CPC分类号： C08B37/0087 ,  C08B37/0096

    摘要： A glyoxal and boron free purified cationic polygalactomannan may be prepared by reacting a polygalactomannan flour, a nonionically derivatized polygalactomannan flour, or a mixture thereof, with a cationising reagent, adjusting the pH to be from about 4 to about 6; cross-linking the cationic with glyoxal, and filtering and water washing the cationic polygalactomannan to produce a glyoxalated purified cationic polygalactomannan containing not more than 70% by weight of water. In some cases it may be desirable to introduce a buffering agent to the glyoxalated purified cationic polygalactomannan to regulate the pH to from 8.0 to about 9.5, when measured at 1% (dry matter) in water. In other cases, it may be desirable to remove water to produce glyoxal free purified cationic polygalactomannan in powder form. Such compounds are particularly useful in personal care products.

    摘要翻译： 乙二醛和无硼纯化的阳离子聚半乳甘露聚糖可以通过使聚半乳甘露聚糖粉末，非离子衍生化的聚半乳甘露聚糖粉末或其混合物与阳离子化试剂反应来制备，将pH调节至约4至约6; 将阳离子与乙二醛交联，并过滤并水洗阳离子聚半乳甘露聚糖以产生含有不超过70重量％水的乙二醛纯化阳离子聚半乳甘露聚糖。 在一些情况下，当在水中以1％（干物质）测量时，可能需要向乙醛酸化的纯化阳离子聚半乳甘露聚糖引入缓冲剂以将pH调节至8.0至约9.5。 在其他情况下，可能需要除去水以产生无乙醛酸的纯化的粉末形式的阳离子聚半乳甘露聚糖。 这些化合物特别适用于个人护理产品。

    Swelling Inhibitors for Clays and Shales
    49.
    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。