求解摩阻力时，可针对连续油管在井身中不同结构段的不同变形形状，采用求解径向接触反力时求一个螺距内平均接触反力的方法加以解决。

• This article offers a method for solving the frictional drag, that is, according to the various buckled shapes of coiled tubing in different hole sections, working out the mean contact counterforce in a screw pitch in solving the radial contact counterforce.