Construction Technology of Wire-Line Coring Hydro-Hammer Drilling in Jiakui Coalfield
详细信息
- 责任者：Chen Baozhong (No.241 Team ; Bureau of Geology ; Nuclear Industry of Liaoning Province ; Fengcheng118100 ; China)
- 刊名：Exploration Engineering
- 出版年：2011
- 卷期：38(12)
- 关键词：绳索取心 ; wire line coring
- 页码：p.25-26,31
- 图表：1 table, 6 refs.
- 分类号：2000
- issnNo：ISSN1672-7428
- isbnNo：CN11-5063/TD
摘要
The geological structure is complex in Jiakui coalfield with fractured rocks, loose cementation,frequent formations changing and fault fracture zone, so there are the problems such as many downhole accidents, low coring rate and low drilling efficiency. By the wire-line coring hydro-hammer technology, these technical difficulties were solved with less auxiliary time, improved drilling efficiency and coring rate and the borehole quality was ensured.
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