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    • 5. 发明申请
    • Coiled tubing directional drilling apparatus
    • 卷管定向钻机
    • US20050236189A1
    • 2005-10-27
    • US11074998
    • 2005-03-08
    • Robert Rankin
    • Robert Rankin
    • E21B4/00E21B7/06E21B7/08
    • E21B7/067E21B4/006E21B7/068
    • A coiled tubing directional drilling apparatus which is operated by a mud motor and is characterized by a fixed housing and a rotary steerable bent housing or sub which is selectively rotatable with respect to the fixed housing at a fixed angle bend by a shifting mechanism, typically operated by a reversible electric motor. The motor and shifting mechanism rotate with the drive shaft and employ a lead screw in a cross-nut arrangement that selectively engages and disengages a castle lock or power take-off drive system responsive to the direction of rotation of the motor, for effecting 360-degree rotation of the bent housing with respect to the fixed housing. A sun gear and pinion gear planetary gear system facilitate rotation of the bent housing with respect to the fixed housing at a slower speed than the drive train and bit box components of the device.
    • 一种由泥浆马达操作的连续油管定向钻井设备,其特征在于固定壳体和旋转可操纵的弯曲壳体或副,其可以通过移动机构以固定角度弯曲而相对于固定壳体选择性地旋转,通常操作 通过可逆电动机。 马达和换档机构与驱动轴一起旋转,并采用十字螺母装置的导螺杆,该导螺杆根据马达的旋转方向选择性地接合和脱离城堡锁或动力输出驱动系统, 弯曲壳体相对于固定壳体的旋转角度。 太阳齿轮和小齿轮行星齿轮系统便于弯曲壳体相对于固定壳体以比装置的传动系和位盒部件更慢的速度旋转。