发明名称 |
METHOD AND APPARATUS FOR CONTROLLING PRECESSION IN A DRILLING ASSEMBLY |
摘要 |
Drilling apparatuses and methods for limiting precession are provided. According to one embodiment, a drilling apparatus includes a non-rotating stabilizer. The non-rotating stabilizer includes a first blade and a second blade, the first blade being arranged opposite the second blade. The first blade is biased radially outwardly by a force of a first value. The second blade is not biased radially outwardly by a force corresponding to the first value. The second blade may be a blade which is slidable along the non-rotating stabilizer in an axial direction and allow free sliding axial contact with the formation. |
申请公布号 |
CA2692272(C) |
申请公布日期 |
2017.01.03 |
申请号 |
CA20082692272 |
申请日期 |
2008.06.11 |
申请人 |
VALIDUS INTERNATIONAL, LLC |
发明人 |
SCHUH, FRANK J. |
分类号 |
E21B12/00;E21B7/08;E21B17/10 |
主分类号 |
E21B12/00 |
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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