Drilling mud additives based on a polymer mixture, their use, and a
process for their production
    1.
    发明授权
    Drilling mud additives based on a polymer mixture, their use, and a process for their production 失效
    基于聚合物混合物的钻井泥浆添加剂,其用途及其生产方法

    公开(公告)号:US5028342A

    公开(公告)日:1991-07-02

    申请号:US414978

    申请日:1989-09-29

    IPC分类号: C09K8/10 C09K8/20

    摘要: Drilling mud additives based on a polymer mixture of 20 to 80% by weight carboxymethyl cellulose and 80 to 20% by weight of a polycarboxylic acid selected from polyacrylate, polymethacrylate and/or copolymers thereof and/or salts thereof, in which the carboxymethyl cellulose, which has been obtained from raw linters and/or wood cellulose by the slurry process, is mixed in wet, alcohol-moist form with the polycarboxylic acid and dried, to their use in drilling muds or workover and packer liquids, and to a process for their production.

    摘要翻译: 基于20-80重量%羧甲基纤维素和80-20重量%选自聚丙烯酸酯,聚甲基丙烯酸酯和/或其共聚物和/或其盐的多元羧酸的聚合物混合物的钻井泥浆添加剂,其中羧甲基纤维素, 其通过浆料方法从原料短纤维和/或木纤维素获得,以湿,醇 - 湿形式与多元羧酸混合并干燥,用于钻井泥浆或修井和封隔器液体,以及用于 他们的生产。