摘要
深孔大口径取心钻探,钻孔口径大、地层复杂、钻孔结构复杂、深孔段效率低,钻进工艺尚不成熟,钻探工程难度较大。结合WFSD-2号孔0～897.66 m段施工情况,介绍了施工中存在的主要问题及采取的主要技术措施;对各种施工工艺、技术方法进行了对比分析,提出了建议。
Drilling is difficult for coring in large diameter deep hole because of large diameter,complex formation and borehole structure with immature drilling technology.According to the construction of the section of 0～897.66m of hole WFSD-2,the paper introduced the main problems and technical measures in construction.Comparative analysis was made on different construction technologies and technical methods,and some suggestions were put forward to the similar project.
出处
《探矿工程（岩土钻掘工程）》
2011年第11期7-13,共7页
Exploration Engineering:Rock & Soil Drilling and Tunneling
基金
科技部科技支撑计划专项"汶川地震断裂带科学钻探(WFSD)"项目之"科学钻探与科学测井"课题资助
关键词
深孔
大口径
取心钻探
汶川地震断裂带
科学钻探
deep hole
large diameter
coring drilling technology
Wenchuan seismic fracture zone
scientific drilling
