建立了侧钻水平井射孔管柱力学模型 ,用有限元法的间隙元理论对侧钻水平井射孔管柱进行了力学分析 ,考虑了射孔管柱与井壁之间的接触摩擦阻力对射孔管柱受力变形的影响 ,给出了射孔管柱接触力、摩擦力和管柱应力的计算方法 .现场应用效果良好 ,在井身曲率半径 6 3.7m的实际侧钻水平井中 ,对射孔管柱顺利完成射孔作业 The mechanical model of sidetracking horizontal well perforation pipe string was established. The mechanics of sidetracking horizontal well perforation string was studied by using the finite element method of gap element theory. The contact frictional resistance The calculation method of the contact force, the friction force and the column stress of the perforated pipe string is given.The effect of field application is good, and in the actual sidetracking horizontal well whose radius of curvature is 6 3.7m , The perforation column successfully completed the perforating operation