探矿工程-岩土钻掘工程Issue(11)：49-51,3.
水敏性软硬交错地层瓦斯抽放孔PDC 钻头的设计与应用
Design and Application of PDC Drill Bit for Gas Drainage Drilling in Hard and Soft Water Sensitive Multi-inter- bedded Formation
姜政刚 1张献振 1高晓亮1
作者信息
- 1. 中煤科工集团西安研究院，陕西西安710077
- 折叠
摘要
Abstract
Because of the serious gas outburst disasters in coal resources of Guizhou area, the gas drainage quantity is very large before mining.In the drainage process, due to the unskilled operation and the blind choice of the bits, a lot of bits were used without good effects.According to the special geological conditions, the improvement was made on the drill bits and good results were obtained.The service life of the drill bit is prolonged from 166.5 m to 399 m and the drilling efficien-cy is increased from 8 m/h to about 12.4 m/h.关键词
水敏性地层/软硬交错地层/PDC钻头/瓦斯抽放孔Key words
water sensitive formation/multi-interbedded formation/PDC bit/gas drainage hole分类
天文与地球科学引用本文复制引用
姜政刚,张献振,高晓亮..水敏性软硬交错地层瓦斯抽放孔PDC 钻头的设计与应用[J].探矿工程-岩土钻掘工程,2013,(11):49-51,3.
