Situation of WFSD-3-P Drilling Operation of Wenchuan Earthquake Fault Scientific Drilling Project
详细信息
- 责任者：Zhao Yuangang (Institute of Exploration Technology ; CAGS ; Chengdu 610081 ; China) ; Fan Lasheng
- 刊名：Exploration Engineering
- 出版年：2012
- 卷期：39(9)
- 关键词：断裂带 ; fracture zones ; 大陆科学钻探 ; Continental Scientific Drilling
- 页码：p.18-21
- 图表：illus., 1 table, 6 refs.
- 分类号：2000
- issnNo：ISSN1672-7428
- isbnNo：CN11-5063/TD
摘要
This paper introduces the drilling process of WFSD-3-P of Wenchuan earthquake fault scientific drilling (WFSD) project. A series of technical measures of high-density and low-filtration drilling fluid system, repeated reaming and mud recharging in pipe trip were taken to overcome drilling difficulties, such as borehole shrinkage in fault gouge formation, rock breaking and collapsed borehole enlarging. As a result, high quality undisturbed cores were obtained and rich drilling experiences in earthquake fault were accumulated.
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