In order to improve the drilling speed of the horizontal well to reduce drilling investment in Qingshen gas field, a rotary percussion drilling test was carried out in the 3rd opening interval of Xushen1-Ping3. By the analysis on the strength of the BHA and according to the characteristics of hydraulic rotary tools with different dimensions, the acceleration technology scheme was formulated, the drilling parameters were optimized and the field tests were made. It was proved that there was obvious improvement in deep vertical section by hydraulic drilling. First of all, from the analysis on testing whether the new BHA strength meets the drilling requirements to prevent fatigue failure of drill caused by stress concentration. The drilling parameters were optimized by the pump pressure-displacement back-stepping formula of hydraulic rotary tools under the condition of the fact that the pump pressure of ZJ50D rig is generally no more than 25MPa in Daqing. Based on the parameter optimization result, the specific construction measures were formulated to ensure the successful field test of φ279mm hydraulic rotary tool.