In order to improve deep drilling speed, protect and detect reservoir of Daqing, based on Mohr-Coulomb criterion and by the introduction of linear correction coefficient, the model of formation caving prediction for deep well was established. The feasibility analysis is made on the natural gas drilling in Xushen gas field about geological conditions, gas well conditions, safety, economy and technical conditions. The second section of Quantou formation to central Yingcheng formation（about 2700~4000m）of Xudong, Xuzhong, Fengle and Shengping blocks are determined by optimization as natural gas drilling sections. The results show that it is feasible to improve deep drilling speed by natural gas drilling, which is also beneficial to deep natural gas exploration in Daqing.