Accident Treatment for Assembly Dropdown in Small Diameter Borehole with Eccentric Cutting Knife
详细信息
- 责任者：Liu Jianping (Water Team of Coalfield Bureau of Guizhou Province ; Anshun 561000 ; China) ; Chen Hongjun
- 刊名：Exploration Engineering
- 出版年：2010
- 卷期：37(4)
- 关键词：事故处理 ; accident treatment ; 小口径钻进 ; small-hole drilling
- 页码：p.48-49, 53
- 图表：1 illus.
- 分类号：2000
- issnNo：ISSN1672-7428
- isbnNo：CN11-5063/TD
摘要
Cutting drilling pipe and the assembly with eccentric cutting knife are usually applied in the large diameter engineering borehole construction;and in geological drilling, eccentric cutting knife can used to cut the casing pipe or coring barrel.The paper described a successful treatment practice of complex borehole accident in a drilling construction in Guizhou Province, the drilling pipe was cut down from the outside with eccentric cutting knife, and introduced the technical measures and the attentions.