钻柱拉力—扭矩模型述评

为加深对钻柱摩阻问题的研究,约翰西克、莱萨哲、何华山、杨姝和李子丰先后建立了5种钻柱拉力—扭矩模型。通过分析对比,认为李子丰模型是目前较完善的钻柱拉力—扭矩模型,适用于一切钻井过程中钻柱、套管柱稳态拉力和扭矩的计算,且具有较高精度。

Comment on tension-torque model of drillstrings

In order to get a deeper understanding of the frictional force against drillstrings,five tension-torque models are established early or late by Johansick,Li Zifeng,et al.. By making a comparison between them,the authors think Li's model is the most perfect one. It is adaptable to the calculation of the steady state tension and torque of drill casing strings in each and every operation and provides higher accuracy.