Practice of Diamond Wire-Line Coring Drilling in Broken Formation of Dawanggou Molybdenum Mining Area in Song County
详细信息
- 责任者：Wang Jiangping (No.4 Geological Team ; Henan Provincial Non-Ferrous Metals Geological and Mineral Resources Bureau ; Zhengzhou 450016 ; China)
- 刊名：Exploration Engineering
- 出版年：2012
- 卷期：39(10)
- 关键词：复杂地层钻进 ; drilling in complicated formation ; 绳索取心 ; wire line coring
- 页码：p.40-42
- 图表：illus., 1 table, 51 refs.
- 分类号：2000
- issnNo：ISSN1672-7428
- isbnNo：CN11-5063/TD
摘要
According to the difficulties of wire-line coring drilling in complex formation of Dawanggou molybdenum mine with intense alteration,uneven hardness and gushing leakage,the wall protection was adopted by casing first and slurry secondly.The discussion was made on the selection of drilling equipments and tools as well as diamond bit parameters determination;wall protection with K + humate-containing drilling mud and plugging with inert stuffing were put forward and tripping pressure surge and suction damage to the hole wall decreasing measures were used with good application effects.