文章全面系统的分析、总结，提出了一整套避免侧钻失败的工艺技术措施，即提高四川油气田侧钻成功率的技术途径，主要内容包括：根据井径曲线，原井眼井斜情况、地层岩性、井下地层流体压力情况等因数优选侧钻点和设计侧钻井眼轨迹，根据不同地质条件优选弯接头、钻头和侧钻方法，合理地设计水泥塞长度和保证水泥塞强度，正确定向，合理控制钻时，优选侧钻参数，保持良好的钻井液性能，合理使用钻头，准确判断钻头使用寿命及侧钻后控制井眼轨迹使新旧井眼保持适当距离等技术措施，以确保侧钻成功。在工艺和装备上，继续加强套管井侧钻科研攻关，配套完善套管井侧钻工艺技术 The paper comprehensively analyzes and concludes with a set of technical measures to avoid the failure of sidetracking, that is, the technical approach to improve the success rate of sidetracking in Sichuan oil and gas field. The main contents include: According to the curve of borehole diameter, According to different geological conditions, such as bending joints, bit and side-drilled method, the length of cement plug should be designed reasonably and the strength of cement plug should be designed properly, and the orientation should be correct and reasonable When controlling the drilling, the drilling parameters should be optimized, the drilling fluid properties should be optimized, the drill bit should be used reasonably, the service life of the drill bit should be accurately judged, and the wellbore trajectory after the sidetracking should be kept at an appropriate distance between the old and the new wellbore to ensure the success of sidetrack drilling. In the process and equipment, we will continue to strengthen the scientific research of cased hole side-drills and improve the technology of cased hole side-drills