发明名称 |
Downhole reservoir effluent column pressure restraining apparatus and methods |
摘要 |
Apparatus and methods disclosed herein utilize a seal within a well borehole annulus to re-direct forces generated by a column of effluents from a well-drilling bit assembly to a point above the bit assembly during drilling operations.
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申请公布号 |
US2010006340(A1) |
申请公布日期 |
2010.01.14 |
申请号 |
US20090460071 |
申请日期 |
2009.07.13 |
申请人 |
HOUSTON NORMAN DEVERNE |
发明人 |
HOUSTON NORMAN DEVERNE |
分类号 |
E21B33/10;E21B7/00;E21B17/10 |
主分类号 |
E21B33/10 |
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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