Drilling fluid methods and composition
    2.
    发明授权
    Drilling fluid methods and composition 失效
    钻井液的方法和组成

    公开(公告)号:US5099930A

    公开(公告)日:1992-03-31

    申请号:US646088

    申请日:1991-01-25

    IPC分类号: C09K8/06 C09K8/22

    CPC分类号: C09K8/22 C09K8/06

    摘要: A method is provided for the prevention of balling of formation cuttings upon the surface of drilling equipment and for lubrication of said equipment used in conjunction with subterranean well operations. An aqueous system is prepared to which is added a composition of a water insoluble polyglycol having a molecular weight of from between about 1,200 and about 10,000, an emulsifying surfactant having a hydrophilic/hydrophobic balance of about 4 or more, and a hydrotrope. An additive for use in the method also is disclosed.

    摘要翻译: 提供了一种用于防止钻井设备表面上的成形切屑的球磨和用于与地下井操作结合使用的所述设备的润滑的方法。 制备水性体系,向其中加入分子量为约1,200至约10,000的水不溶性聚乙二醇的组合物,具有约4或更高的亲水/疏水平衡的乳化表面活性剂和水溶助长剂。 还公开了用于该方法的添加剂。