发明名称 |
ROTARY STEERABLE DRILLING SYSTEM |
摘要 |
A rotary steerable drilling system includes a gear box driven by a drill string having an input rotatable in a first direction and an output rotatable in an opposite direction. A drive shaft coupled to the output has a first axis of rotation, and a rotatable tubular bit sleeve annularly arranged around a distal portion of the drive shaft is pivotable to have a second axis of rotation and includes a connector assembly on a distal end of the bit sleeve for coupling the bit sleeve to a drill bit. A spherical CV joint couples the bit sleeve to the drive shaft, eccentric cams are movably positioned on the drive shaft, a differential gearing system is connected to the eccentric cams, and a pressure applying device is connected to the eccentric cams. When activated, the pressure applying device applies pressure to modify the speed of rotation of the eccentric cams. A method of rotary steerable drilling is disclosed. |
申请公布号 |
CA2928467(A1) |
申请公布日期 |
2015.05.28 |
申请号 |
CA20132928467 |
申请日期 |
2013.11.25 |
申请人 |
HALLIBURTON ENERGY SERVICES, INC. |
发明人 |
WINSLOW, DANIEL MARTIN;DEOLALIKAR, NEELESH V. |
分类号 |
E21B3/02;E21B4/02;E21B15/00 |
主分类号 |
E21B3/02 |
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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