金刚石与磨料磨具工程Issue(2)：65-68,4.DOI:10.13394/j.cnki.jgszz.2014.2.0015
煤矿瓦斯抽放孔跟管钻进用偏心PDC钻头的研制
Development of excentric PDC bit drilling with casing used for gas drainage drilling in coal mine
高晓亮 1刘刚 1侯红 1陈洪岩1
作者信息
- 1. 中煤科工集团西安研究院有限公司，西安 710077
- 折叠
摘要
Abstract
To slove the problem of drilling in soft and outburst coal seam an excentric bit that drills with casing is developed and the drilling parameters are studied to enhance the efficiency and lifetime of the bit Results show that the PDC excentric bit could break rocks quickly thus suitable for the drilling of gas drainage hole in coal-bearing strata But for the soft coal strata it requires more water to cool the bit and wash away rock powders Results show that the PDC bit could cut rocks quicker and last longer when drilling at reasonable cutting angle side angle and related spatial parameters.关键词
瓦斯抽放/跟管钻进/偏心钻头/PDC钻头Key words
gas drainage/drilling with casing/excentric bit/PDC bit分类
矿业与冶金引用本文复制引用
高晓亮,刘刚,侯红,陈洪岩..煤矿瓦斯抽放孔跟管钻进用偏心PDC钻头的研制[J].金刚石与磨料磨具工程,2014,(2):65-68,4.
