Abstract: In this paper,the geological characteristics of Sulige gas field and driling difficulties is analyzed,the drilling technological features and success experience is summarized.The successful experience included:generalizing applied new process and new technology,optimize well profile design,optimization of the downhole assembly,increase PDC bit personalized design and application,strengthen effective prevention of the engineering accident and complex situations,full well application of of horizontal Wells steering drilling technology and accurate control of borehole track.