Simulation experiment on the control method for eccentric mechanism of the drilling tool with variable angle bent sub

The success of the drilling tool with variable angle bent sub is dependent on the control method of its eccentric mechanism. The control method based on the drilling tool with variable angle bent sub was verified. Based on the simulation experiment of Labview and SolidWorks software jointly, the correctness of offset angle (β) and azimuth angle (θ) adjustment formulas of the guide shaft and their joint application under two scenarios of sleeve rotation and non-rotation was verified by means of the Newton interpolation method. Besides, the moving path of guide shaft under various situations was obtained. It provides the theoretical basis for the future study.