【摘要】 涡轮钻井是石油天然气钻井中常用的一种钻井方法，俄罗斯使用多年，中国地质勘探钻进中也在研究和使用。但是，中国对地质勘探钻进中使用的小尺寸涡轮钻具的开发及其在定向钻进中的应用研究较少。俄罗斯研发出了一种小尺寸（直径70 mm、长度650 mm）涡轮钻具，并在地质勘探钻孔定向钻进中得到了成功的使用，取得了很好的技术经济效果，值得引起我们的注意。更多还原

【Abstract】 Turbo drilling is a conventional drilling method in oil and gas drilling and it has been used for many years in Russia and is being studied and used in geological exploration drilling of China. However it is not enough to develop and use the small-sized turbo drill in directional drilling in China. In Russia the small-sized turbo drill(its diameter 70mm and length 650mm) has been developed and used in drilling of geological exploration holes successfully and good technical and economical results obtained. That deserves our attention.更多还原