论文部分内容阅读
用冲击——钢绳法钻进干砂层时需要向井孔里灌水,由于运水不易,时常造成很大困难,并且增加钻孔的成本。伏龙涅什地质队机长С．Д．伏龙涅夫使用了一种适于冲击钢绳法的专门结构的八节钻具
Drilling into the dry sand using the impact-steel wire method requires irrigation of the wellbore, which often causes great difficulties as it is difficult to transport water and increases the cost of drilling. Vulnertish geological team captain С. Д. Voroniev used a special eight-section drill that was adapted to the impact of the steel cord