Research on off-line programming-based intelligent directional drillingtechnology of coal seam

Directional drilling is one of the high-tech in CBM. In order to implement scientific development and utilization, increase the quality and efficiency of CBM exploitation, it is necessary to improve the intelligent level of the directional drilling process. Through the three-dimensional off-line programming system of coalbed directional drilling, the control parameters of the drilling trajectory are obtained and the drilling control program is automatically generated. At the same time it can rectify according to the deviation between actual track and designed one automatically to achieve intelligent control during directional drilling.