阐述了固体力学的有限元理论,分析了钻杆通过水平径向井转向器过程中的受力情况,并根据钻杆的受力特点和计算机硬件条件,对基于ANSYS54的钻杆有限元分析模型作了适当的简化,探求了一种钻杆通过转向器力学分析的近似而省时的计算方法。分析认为,钻杆在从一种轨迹曲线段到另一种曲线段的变形处,应力较大,均达到较强的塑变状态,而在同一轨迹曲线段的中间部位应力相对较小。 The finite element theory of solid mechanics is expounded. The stress situation of the drill rod passing through the horizontal radial well steering gear is analyzed. According to the stress characteristics of the drill rod and the computer hardware conditions, the finite element analysis model of the drill rod based on ANSYS54 With proper simplification, an approximate and time-saving calculation method of the drill pipe through the steering mechanical analysis was explored. The analysis shows that the stress of the drill pipe in the deformation from one trajectory curve section to the other is large and reaches a strong plastic deformation state, while the stress in the middle section of the same trajectory section is relatively small.