中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

26 records (took 0.019 seconds)

    Clay and shale inhibition agents and method of use
    24.
    发明授权
    Clay and shale inhibition agents and method of use 有权

    公开(公告)号：US09598626B2

    公开(公告)日：2017-03-21

    申请号：US14414913

    申请日：2013-07-16

    Applicant: Dow Global Technologies LLC

    Inventor： Cole A. Witham ,  Joseph L. Deavenport ,  Michael K. Poindexter

    IPC: C09K8/22

    CPC classification number: C09K8/22 ,  C09K2208/12

    Abstract: The hydration of clays and shale in drilling operations may be inhibited by employing an aqueous based drilling fluid comprising a shale hydration inhibition agent having the formula: (I), R is an alkyl group having 1 to 6 carbons; R1 may be the same or different than R and is an alkyl group having 1 to 10 carbons or a hydroxy alkyl group comprising n number of carbons wherein n is an integer from 1 to 10 and n−1 hydroxyl groups; R2 is an alkyl group having 1 to 6 carbons; R3 may be the same or different than R2 and is an alkyl group having 1 to 10 carbons or a hydroxy alkyl group comprising n number of carbons wherein n is an integer from 1 to 10 and n−1 hydroxyl groups, with the proviso that R3 is not the same as R1; and X is an anion. The shale hydration inhibition agent should be present in the aqueous based drilling fluid in sufficient concentration to reduce the reactivity, such as swelling, of clays and shale when exposed to water-based drilling fluids.

    Cementing composition comprising nonionic hydrophobically-modified cellulose ethers and its use
    25.
    发明授权
    Cementing composition comprising nonionic hydrophobically-modified cellulose ethers and its use 有权
    包含非离子疏水改性纤维素醚的胶结组合物及其用途

    公开(公告)号：US09416051B2

    公开(公告)日：2016-08-16

    申请号：US14649332

    申请日：2013-12-06

    Applicant: DOW GLOBAL TECHNOLOGIES LLC

    Inventor： Roger L. Kuhlman ,  Cole A. Witham ,  Michael K. Poindexter ,  Raymond M. Jones ,  Nathan Kyle Combs ,  Jeffrey T. Watters ,  Larry T. Watters

    IPC: C04B28/02 ,  E21B33/14 ,  C04B24/38 ,  C09K8/487

    CPC classification number: C04B24/383 ,  C04B28/02 ,  C09K8/487 ,  E21B33/14 ,  C04B24/22 ,  C04B2103/408 ,  C04B2103/46

    Abstract: Disclosed is a composition and a method for cementing a casing in a borehole of a well using an aqueous cementing composition comprising (a) water, (b) a cementing composition comprising (i) a hydraulic cement, (ii) a hydrophobically modified polymer, (iii) a dispersant, and optionally (iv) one or more other additives conventionally added to aqueous cementing compositions useful in cementing casings in the borehole of wells. Preferably the hydrophobically modified hydroxyethyl cellulose has an ethylene oxide molar substitution of from 0.5 to 3.5, a hydrophobe degree of substitution of from 0.001 to 0.025, and a weight-average molecular weight of from 500,000 to 4,000,000 Daltons and the dispersant is sulfonated polymer, melamine formaldehyde condensate, a naphthalene formaldehyde condensate, a branched or non-branched polycarboxylate polymer. Preferably, the aqueous cementing composition is pumped downwardly into said casing, pumped upwardly into the annulus surrounding said casing until said aqueous composition fills that portion of the annular space desired to be sealed, and then maintaining said aqueous cementing composition in place until the cement sets.

    Abstract translation: 公开了一种组合物和方法，该组合物和方法使用水性胶结剂组合物将井筒的井筒固定在井眼中，所述组合物包含（a）水，（b）粘合剂组合物，其包含（i）水硬性水泥，（ii）疏水改性聚合物， （iii）分散剂，以及任选地（iv）一种或多种其它常规添加到用于在井的钻孔中固井的水泥固井组合物中的其它添加剂。 优选地，疏水改性的羟乙基纤维素的环氧乙烷摩尔取代度为0.5-3.5，疏水取代度为0.001至0.025，重均分子量为500,000至4,000,000道尔顿，分散剂为磺化聚合物，三聚氰胺 甲醛缩合物，萘甲醛缩合物，支链或非支化聚羧酸酯聚合物。 优选地，将水性胶结剂组合物向下泵送到所述壳体中，向上泵入围绕所述壳体的环空中，直到所述水性组合物填充期望密封的环形空间的那部分，然后将所述水性固井组合物保持在适当位置，直到水泥组 。

    GLYCOL ETHER AMINES FOR USE AS CLAY AND SHALE INHIBITION AGENTS FOR THE DRILLING INDUSTRY
    26.
    发明申请
    GLYCOL ETHER AMINES FOR USE AS CLAY AND SHALE INHIBITION AGENTS FOR THE DRILLING INDUSTRY 有权
    用作钻井行业粘土和粉末抑制剂的GLYCOL醚类

    公开(公告)号：US20150166867A1

    公开(公告)日：2015-06-18

    申请号：US14407974

    申请日：2013-06-19

    Applicant: Dow Global Technologies LLC

    Inventor： Aleksandr T. Gamble ,  Cole A. Witham ,  Michael K. Poindexter ,  Felipe A. Donate ,  Kyle R. Essenmacher ,  Stephen W. King ,  John Beckerdite

    IPC: C09K8/22

    CPC classification number: C09K8/22 ,  C09K2208/12

    Abstract: The hydration of clays and shale in drilling operations may be inhibited by employing an aqueous based drilling fluid comprising a shale hydration inhibition agent having the formula: (Formula I should be inserted here.) wherein R is hydrogen or an alkyl group having 1 to 12 carbons, R1 is an alkylene group having 1 to 12 carbons, and R2 is an alkyl group having 1 to 12 carbons. The shale hydration inhibition agent should be present in the aqueous based drilling fluid in sufficient concentration to reduce the reactivity, such as swelling, of clays and shale when exposed to water-based drilling fluids.

    Abstract translation: 通过采用包含具有下式的页岩水化抑制剂的含水基钻井液可以抑制钻井作业中粘土和页岩的水合作用（式Ⅰ应在此插入），其中R是氢或1至12的烷基 碳，R1为碳数为1〜12的亚烷基，R2为碳数为1〜12的烷基。 页岩水化抑制剂应以足够的浓度存在于含水基钻井液中，以降低暴露于水基钻井液时粘土和页岩的反应性，例如膨胀。

Patent Agency Ranking