发明名称 |
Wellbore cleaning method and apparatus |
摘要 |
This invention relates to well cleaning methods and apparatus. In particular, this invention relates to a method of drilling and cleaning a wellbore. In one embodiment of the invention, a method of drilling and cleaning a wellbore (12) is disclosed. The method comprises the steps of providing a drill string (10) having a drill bit (28) and a cleaning tool (24) with selectively activatable cleaning members (34); drilling a wellbore using the drill bit while maintaining the cleaning members in a deactivated position; and pulling the drill string from the wellbore with the cleaning members in an activated position to thereby clean the wellbore. A corresponding cleaning tool is also disclosed. |
申请公布号 |
GB2441693(A) |
申请公布日期 |
2008.03.12 |
申请号 |
GB20070023988 |
申请日期 |
2007.12.10 |
申请人 |
SPECIALISED PETROLEUM SERVICES GROUP LIMITED |
发明人 |
GEORGE TELFER |
分类号 |
E21B37/04;E21B21/10;E21B23/00;E21B34/00;E21B37/02 |
主分类号 |
E21B37/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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