Controllable track lateral drilling tool and method
A drilling tool and trajectory technology, applied in the field of controllable trajectory lateral drilling tools, can solve the problems of small borehole diameter, poor borehole trajectory accuracy, borehole buckling, etc., to ensure communication quality, improve safety and stability , Reduce the effect of falling well loss
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[0058] Example: see attached Figure 1-5 , the present invention provides a technical solution: a controllable trajectory lateral drilling tool, which includes a high-pass lateral drilling section b and a drilling power transmission section a, wherein the high-pass lateral drilling section b can Drilling of the extended well section e of the short-very short radius well section d is realized through the short-very short radius well section d extending laterally from the main wellbore c, and the high-passability lateral drilling section b includes the drill bit 3 in sequence from front to back , a high-passage guiding execution sub-joint 1 and a high-passage transmission sub-joint array 2, the high-passage transmission sub-joint array 2 is composed of several transmission sub-joints 20 for bearing torque, and the transmission sub-joints 20 can transmit the drill bit 3 Rotary drilling power, and there is a preset deflection limit angle between adjacent transmission nipples 20, a...
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