The difference between largediameterdrilling and oil drilling is reviewed with their characteristics.
论述了大直径钻井工程与石油钻井的不同特点。
2
The theoretical and technical problems to be researched for largediameterdrilling are outlined with its application prospect appraised.
简述了大直径钻井需要研究的理论和技术问题,并对应用前景作了评价。
3
Based on the historical experience of drilling technology, it is proposed to study the bottom process of largediameter reverse circulation rotary drilling.