The paper presents the calculation method of build-up rate of downhole motor with two bent subs in drilling short-radius horizontal wells, based on finite element reiteration.

• 提出了以有限元动坐标迭代法为基础的短半径水平并双弯马达造斜率的计算方法，并给出了大曲率井眼中钻头侧向力的二重非线性数值解。