Abstract: Drilling and extracting gas is the main method to prevent and control the gas hazard, in Jinneng Coal Industry Branch, which belongs to Shenhua Ningxia Goal Industry Group and has been identified as the coal and gas outburst mine. However, during the drilling process, drill pipe always get stuck and buried due to recurrent wall collapses and gas bursts. And the gas extracting and utilization rate is low because of the plugged channel. Large size spiral drill pipe can effectively solve the problem of pipe sticking and burying, with the utilization of the hinge drill bit and hitch structure based on screen pipe hole-protected technology gas extracting rate also was increased. In field application, there were two methods to down the screen pipe, including manual work and booster, totally 3 845 m of quantities were completed. And the efficiency of booster is 3 times better than manual, which indicates that the screen pipe hole-protected technology and equipment is suitable for the application in soft coal mining district.