| 水敏性软硬交错地层瓦斯抽放孔PDC钻头的设计与应用 |
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| 引用本文： | 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,2013,40(11):49-51. |
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| 作者姓名： | 姜政刚 张献振 高晓亮 |
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| 作者单位： | 中煤科工集团西安研究院,陕西西安710077 |
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| 摘 要： | 贵州地区煤炭资源中瓦斯突出灾害非常严重，矿下掘进前的瓦斯抽放工程量巨大。在瓦斯抽放孔钻进施工过程中，由于现场操作的不熟练和使用钻头的盲目性，使用的钻头数量不仅非常大，而且效果较一般。针对当地复杂地层，对钻头进行了改进设计，取得了良好的效果。钻头寿命由原来的166．5m提升至399m，钻进效率由8m／h提高到12．4m／h左右。
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| 关 键 词： | 水敏性地层 软硬交错地层 PDC钻头 瓦斯抽放孔 |
| 收稿时间： | 2013/6/19 0:00:00 |
| 修稿时间： | 2013/6/19 0:00:00 |
Design and Application of PDC Drill Bit for Gas Drainage Drilling in Hard and Soft Water Sensitive Multi-interbedded Formation |
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| JIANG Zheng-gang,ZHANG Xian-zhen and GAO Xiao-liang.Design and Application of PDC Drill Bit for Gas Drainage Drilling in Hard and Soft Water Sensitive Multi-interbedded Formation[J].Exploration Engineering(Drilling & Tunneling),2013,40(11):49-51. |
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| Authors: | JIANG Zheng-gang ZHANG Xian-zhen and GAO Xiao-liang |
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| Institution: | ( Xi＇ an Research Institute, China Coal Technology Engineering Group, Xi＇ an Shaanxi 710077, China) |
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| 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. |
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| Keywords: | water sensitive formation multi-interbedded formation PDC bit gas drainage hole |
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