| 不提钻换钻头装置的研制 |
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| 引用本文： | 吕思义,王贵和,等.不提钻换钻头装置的研制[J].吉林工学院学报,1989,10(4):1-5. |
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| 作者姓名： | 吕思义 王贵和 |
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| 作者单位： | [1]吉林工学院 [2]吉林省探矿技术研究所 |
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| 摘 要： | 作者研制了一种用于钻孔径75mm，岩心直径35mm的钻具，使用该钻具钻进时，无需升起钻杆即可收取岩心和检查或更换钻头。
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| 关 键 词： | 钻具 钻头 钻杆 钻井泥浆 钻头进尺 岩心 不提钻换钻头装置 |
The Development of a Drilling Device for Changing Bit Without Lifting the Drill Pipe |
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| Lu,Siyi Ji Qingfa Wang Guihe
Jilin Institute of Technology Jilin Institute of Prospecting Techniques.The Development of a Drilling Device for Changing Bit Without Lifting the Drill Pipe[J].Journal of Jilin Institute of Technology,1989,10(4):1-5. |
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| Authors: | Lu Siyi Ji Qingfa Wang Guihe
Jilin Institute of Technology Jilin Institute of Prospecting Techniques |
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| Abstract: | A special drilling device is developed for drilling wells of 75 mm bore diameter and 35mm core barrel diameter. On drilling with this tool, the drill core can be retrieAved and the bit examined and changed without lifting the drill pipe. |
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| Keywords: | drilling tool drill bit drill pipe drilling fluids footage per bit |
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