发明名称 |
TOP FILLING TUBING |
摘要 |
A method of top-filling a drill pipe string comprises injecting fluid int o the upper end of the string. Apparatus for use in top-filling a drill pipe string comprises an injector adapted to co-operate with the upper end of a drill pipe string, whereby fluid may be pumped through the injector and into the string.
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申请公布号 |
CA2657463(A1) |
申请公布日期 |
2007.12.21 |
申请号 |
CA20072657463 |
申请日期 |
2007.06.11 |
申请人 |
CHURCHILL DRILLING TOOLS LIMITED |
发明人 |
CHURCHILL, ANDREW PHILLIP |
分类号 |
E21B21/01;E21B17/00;E21B21/00 |
主分类号 |
E21B21/01 |
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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