申请人:Calgon Corporation
公开号:US04455240A1
公开(公告)日:1984-06-19
The instant invention is directed to an aqueous drilling fluid comprising an aqueous clay dispersion and a carboxylic functional polyampholyte, or the salt thereof. The instant invention is also directed to the use of the drilling fluid.
本发明涉及一种水基钻井液,包括水基黏土分散液和羧基功能的聚两性离子或其盐。本发明还涉及使用该钻井液。