Butted Technology Between Underground Directional Drilling Borehole and Vertical Well of Surface U-type Well Group
In order to improve the extraction efficiency of surface coal-bed methane wells, the possibility of realizing the three-dimensional combined extraction of coal-bed methane by butted drilling borehole is verified. Taking a main hole with a depth of 1 544 m butted hole completed in Baode Coal Mine as...
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| Hovedforfatter: | |
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| Format: | Artigo |
| Sprog: | Chinês |
| Udgivet: |
Editorial Office of Safety in Coal Mines
2020-09-01
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| Serier: | Meikuang Anquan |
| Fag: | |
| Online adgang: | https://www.mkaqzz.com/cn/article/id/7143 |
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