关键词：加长钻杆；静力学模型；多体动力学；井眼轨迹；钻具参数；接触力中图分类号：TE921 文献标识码：A DOI：10.12473/CPM.202502047

Abstract：Extendeddrillpipeis animportantdrilling tool thatuses veryfewc（试读）...