Abstract: To enhance the development efficiency of deep shale gas in the Qiongzhusi Formation of Ziyang, a series of drilling acceleration technologies were investigated, significantly improving drilling efficiency. Based on research on differentiated adjustment of mandatory casing-setting points according to drilling runs and the “1+N” principle, a dynamic casing program optimization technology was developed. The minimum curvature method was prioritized in trajectory design to reduce the total drilled footage, establishing a trajectory design approach conducive to drilling acceleration. In the vertical section, based on dynamic modeling, a pre-bent bottom hole assembly (BHA) was introduced to enhance deviation control, enabling both effective deviation control and rapid drilling. For difficult-to-drill formations, customized polycrystalline diamond compact (PDC) bits were developed based on drillability experiments and rock-breaking mechanism studies, achieving an 18.75% increase in rate of penetration (ROP). In the horizontal section, a “four-in-one” steering technology combined with oil-based drilling fluid was applied to balance collapse pressure and prolong the duration of wellbore stability, and the synergistic use of a rotary steerable system (RSS) and a motor enabled single-run drilling operations. Field application results demonstrated that the average ROP across16 wells increased from 5.78 m/h to 7.74 m/h, and the average drilling cycle decreased from 122.83 d to 101.33 d. Breakthroughs in this key technologies including dynamic casing program optimization, trajectory design for drilling acceleration, and development of bits enabling physical-limit rock cutting for difficult-to-drill formations effectively ensured the safety and efficiency of drilling operations, providing technical support for deep shale gas development.