发明授权
- 专利标题： Methods for reducing circulation loss during drilling operations
- 专利标题（中）： 减少钻井作业中循环损失的方法
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申请号： US11542905申请日： 2006-10-04
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公开(公告)号： US07507692B2公开(公告)日： 2009-03-24
- 发明人: Tao Xiang
- 申请人： Tao Xiang
- 申请人地址： US TX Houston
- 专利权人： Baker Hughes Incorporated
- 当前专利权人： Baker Hughes Incorporated
- 当前专利权人地址： US TX Houston
- 代理机构： The Morris Law Firm, P.C.
- 代理商 Paula D. Morris
- 主分类号： C09K8/02
- IPC分类号： C09K8/02 ; E21B7/00 ; E21B43/16
摘要：
A method for reducing circulation loss during drilling operations, the method comprising: performing drilling operations using a water-based drilling fluid system comprising a first amount of water insoluble particulate; providing the drilling fluid system with a second amount of alkali metal silicate, the first amount of water insoluble particulate and the second amount of alkali metal silicate comprising a circulation loss combination; and reducing the pH of the water-based drilling fluid system using a quantity of water soluble activating agent effective to form an effective circulation loss structure after a period of time.
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