Self-breakable yield point enhancer for oil based drilling mud
    6.
    发明授权
    Self-breakable yield point enhancer for oil based drilling mud 有权
    用于油基钻井泥浆的自断裂屈服点增强剂

    公开(公告)号:US07956014B2

    公开(公告)日:2011-06-07

    申请号:US11572337

    申请日:2004-07-20

    IPC分类号: C09K8/38

    CPC分类号: C09K8/36 C08G69/44

    摘要: The present invention relates to a liquid, self-breakable, temporary viscosifier agent (yield point enhancer) for oil based drilling muds, obtained by reacting one or more dicarboxylic fatty acids with a secondary dialkanolamine and thereafter with a tertiary tialkanolamine, and to oil based drilling muds containing it.

    摘要翻译: 本发明涉及通过使一种或多种二羧酸脂肪酸与二次二链烷醇胺反应,然后与三级烷醇胺反应获得的油基钻井泥浆的液体,自破性临时增稠剂(屈服点增强剂)和油基 钻泥包含它。

    Self-Breakable Yield Point Enhancer for Oil Based Drilling Mud
    9.
    发明申请
    Self-Breakable Yield Point Enhancer for Oil Based Drilling Mud 有权
    用于油基钻井泥浆的自断裂屈服点增强器

    公开(公告)号:US20080318810A1

    公开(公告)日:2008-12-25

    申请号:US11572337

    申请日:2004-07-20

    IPC分类号: C09K8/22

    CPC分类号: C09K8/36 C08G69/44

    摘要: The present invention relates to a liquid, self-breakable, temporary viscosifier agent (yield point enhancer) for oil based drilling muds, obtained by reacting one or more dicarboxylic fatty acids with a secondary dialkanolamine and thereafter with a tertiary tialkanolamine, and to oil based drilling muds containing it.

    摘要翻译: 本发明涉及通过使一种或多种二羧酸脂肪酸与二次二链烷醇胺反应,然后与三级烷醇胺反应获得的油基钻井泥浆的液体,自破性临时增稠剂(屈服点增强剂)和油基 钻泥包含它。

    Method for reducing filtrate loss from oil based drilling fluids
    10.
    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

    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。