Trajectory Control Technology of Bedding Drilling in Medium Thick Coal Seam
There are some problems existing in the field application of progressively extended drilling technology such as unclear active exploration distance, high probability of outside the coal seam, exploration inefficiency and so on. This paper puts forward some solutions. According to the characteristics...
Guardado en:
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| Formato: | Artigo |
| Lenguaje: | Chinês |
| Publicado: |
Editorial Office of Safety in Coal Mines
2020-09-01
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| Colección: | Meikuang Anquan |
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| Acceso en línea: | https://www.mkaqzz.com/cn/article/id/7159 |
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