Primary research on vertical and fast drilling technology with pre-bending dynamic method

The vertical and fast drilling technology will be the future of the anti-deviation drilling technology.A new method,the vertical and fast drilling technology with pre-bending dynamics method,was put forward.The steering force of a slide steering bottom hole assembly with a single bending motor working on the compounding mode in low-tilt angle deviation hole was stimulated using the special software SABHA.This bottom hole assembly includes a bending positive displacement motor and two stabilizers.The results show that the steering force tends to reduce deviation of well bore and is larger than pendulum force.This method was validated by the field experiments.A calculation method for steering force in compounding drilling mode with slide steering bottom hole assembly and the data from field experiment were given.