“科钻一井”钻探施工技术概览

General introduction on drilling techniques used in China's First Deep Scientific Drilling Well CCSD-1

文章介绍了中国第一个硬岩、深孔、连续取心钻探项目———中国大陆科学钻探工程科钻一井的钻探实施情况,涉及该井的钻探技术设计、钻孔结构和套管程序、进行取心钻进、扩孔钻进和纠斜钻进时采用的方法和技术。此外,还介绍了科钻一井的施工过程以及在钻进施工遇到的各种技术难题和采取的解决措施、获得的主要技术经济指标。总的来说,科钻一井施工采用了许多特殊和新型的钻探技术,施工获得了高效、优质和低成本的好效果。

This paper introduces the operation of China′s first deep hole, hard rock continuous coring project, CCSD-1 drilling project, concerning the drilling technical design, hole structure and casing program , as well as the techniques used in core drilling, hole reaming and directional drilling. In addition, the drilling process of CCSD-1 and the technical problems encountered in drilling and the measures adopted to solve the problems are described, and the main technical and economic indices are presented. Many special and new drilling technologies have been used in the drilling operation of CCSD-1, and high-efficiency, good-quality and low-cost drilling results have been achieved.