ADDITIVE FOR REDUCING TORQUE ON A DRILL STRING
    376.
    发明申请
    ADDITIVE FOR REDUCING TORQUE ON A DRILL STRING 审中-公开
    减少钻头扭矩的补充

    公开(公告)号:WO2006091562A8

    公开(公告)日:2007-11-01

    申请号:PCT/US2006006030

    申请日:2006-02-22

    Abstract: A method of reducing the torque of a drill string used in drilling a subterranean well that includes injecting into the drilling fluid a composition including a base fluid and a polymer coated colloidal solid material. The polymer coated colloidal solid material includes: a solid particle having an weight average particle diameter (d 50 ) of less than ten microns, and a polymeric dispersing agent coated onto the surface of the solid particle during the cominution (i.e. grinding) process utilized to make the colloidal particles. The polymeric dispersing agent may be a water soluble polymer having a molecular weight of at least 2000 Daltons. The solid particulate material may be selected from materials having of specific gravity of at least 2.68 and preferably the solid particulate material may be selected from barium sulfate (barite), calcium carbonate, dolomite, ilmenite, hematite, olivine, siderite, strontium sulfate, combinations and mixtures of these and other similar solids that should be apparent to one of skill in the art.

    Abstract translation: 一种减少用于钻探地下井的钻柱的扭矩的方法,其包括向钻井液注入包括基础流体和聚合物涂覆的胶体固体材料的组合物。 聚合物涂覆的胶态固体材料包括:重均粒径小于10微米的固体颗粒,以及涂覆在固体颗粒表面的聚合物分散剂 (即研磨)工艺用于制备胶体颗粒。 聚合物分散剂可以是分子量至少为2000道尔顿的水溶性聚合物。 固体颗粒材料可以选自具有至少2.68的比重的材料,并且优选固体颗粒材料可以选自硫酸钡(重晶石),碳酸钙,白云石,钛铁矿,赤铁矿,橄榄石,菱铁矿,硫酸锶,组合 以及这些和其他类似固体的混合物,其对于本领域技术人员应该是显而易见的。

    CLADDING CONCENTRATE
    378.
    发明申请
    CLADDING CONCENTRATE 审中-公开
    封闭浓度

    公开(公告)号:WO2005071049A1

    公开(公告)日:2005-08-04

    申请号:PCT/RU2004/000400

    申请日:2004-10-12

    Abstract: The aim of said invention is to produce, during operation, a protective metalloceramic film having a heterogeneous structure and provided with increased density, wear resistance, a high adhesion to a friction surface and whose friction factor after burnishing is equal to or less than 0.03-0.07. The novelty of the inventive cladding concentrate comprising a powdery metallic filler, surface-active agents, oil-soluble metallic dialkyl-thiophosphpric acid salts and a basic oil lies in that said concentrate additionally comprises a mineral silicate and a cyclohexanol-based filler at the following component ratio: 0.05-20 % by mass of a powdery metallic filler, 0.5-11 % by mass of surface-active agents, 1-45 % by mass of metallic dialkyl-thiophosphpric acid salts, 1.2-20 % by mass of a silicate based filler and 0.05-2.0 % by mass of a cyclohexanol. Said silicate based filler comprises natural minerals selected from the range of laminated hydrocylicates such as a serpentinite and/or a chlorite. The metallic dialkyl-thiophosphpric acid salts are embodied in the form of zinc and/or stannum and/or molybdenum and/or aluminium and/or copper and/or cadmium salts.

    Abstract translation: 本发明的目的是在操作过程中产生具有不均匀结构并且具有增加的密度,耐磨性,对摩擦表面的高粘附性并且其抛光后摩擦系数等于或小于0.03的保护性金属陶瓷膜, 0.07。 包含粉末状金属填料,表面活性剂,油溶性金属二烷基 - 硫代磷酸盐和碱性油的本发明的包覆浓缩物的新颖之处在于,所述浓缩物还包含以下矿物硅酸盐和环己醇基填料 组分比:粉末状金属填料0.05〜20质量%,表面活性剂0.5〜11质量%,二烷基硫代磷酸金属盐1-45质量%,硅酸盐1.2-20质量% 和0.05〜2.0质量%的环己醇。 所述硅酸盐基填料包括选自层压氢化物如蛇纹石和/或亚氯酸盐的范围内的天然矿物质。 金属二烷基硫代磷酸盐以锌和/或锡和/或钼和/或铝和/或铜和/或镉盐的形式实施。

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