近几年来,钻径向水平孔的技术在石油天然气开采及煤层气开采行业中蓬勃发展,取得了不错的应用效果,国内的多家油田企业及科研院所都对该技术进行了跟踪研究,笔者有幸也参与了该项技术的部分研究。目前钻径向水平孔常用的喷管主要有两大类。一类是刚度较高的 In recent years, the technology of drilling horizontal horizontal holes has been booming in the fields of oil and gas exploration and coalbed methane mining, and has achieved good application results. Many domestic oilfield enterprises and research institutes have followed the technology, I was fortunate to have also participated in part of the study of the technology. At present there are two main types of nozzles commonly used for drilling horizontal horizontal holes. One is higher stiffness