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深孔钻进时改善钻杆柱工作性状的理论研究方雪松（北京中航勘察设计研究院北京１０００８６）１概述钻探是一个复杂的系统工程，不管钻探技术近期内如何发展，钻探都离不开三大组成部分：①地面动力、回转、提升系统及辅助装置；②中间的动力及信号传递系统；③孔底的碎岩...
Theoretical Study on Improving Performance of Drill String during Deep Hole Drilling Fang Xuesong (Beijing AVIC Survey and Design Institute, Beijing 100086) 1 Introduction Drilling is a complicated system engineering. No matter how the drilling technology develops in the near future, Large components: ① ground power, rotation, lifting system and auxiliary devices; ② intermediate power and signal transmission system; ③ bottom of the rock ...