发明名称 |
APPARATUS AND METHOD FOR CONTROLLING A PART OF A DOWNHOLE ASSEMBLY, AND A DOWNHOLE ASSEMBLY |
摘要 |
This invention relates to an apparatus and method for controlling a part of a downhole assembly, and to the downhole assembly. The downhole assembly may include a steering mechanism adapted to steer a drill bit in a chosen direction, and the steering mechanism may be the part of the downhole assembly which is controlled by the apparatus. The downhole assembly includes a drill bit and a motor, the motor having a stator and a rotor, the rotor being driven to rotate relative to the stator by the passage of a drilling fluid along a drilling fluid path between the rotor and the stator. The motor has a conduit through which the drilling fluid can pass, the conduit being separate from the drilling fluid path, and the apparatus has a valve to control the flow of drilling fluid through the conduit. The invention provides a robust and reliable means of delivering high pressure drilling fluid downstream of the motor. |
申请公布号 |
WO2013186554(A2) |
申请公布日期 |
2013.12.19 |
申请号 |
WO2013GB51536 |
申请日期 |
2013.06.11 |
申请人 |
SMART STABILIZER SYSTEMS LIMITED;CROWLEY, DANIEL, BRENDAN;WALKER, COLIN |
发明人 |
CROWLEY, DANIEL, BRENDAN;WALKER, COLIN |
分类号 |
E21B4/02 |
主分类号 |
E21B4/02 |
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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