Control technology of blank zone in gas drainage boreholes group based on accurate measurement of borehole trajectory
In the process of drilling construction, due to the influence of drill pipe weight, geological conditions and drilling technology, the actual drilling trajectory deviation is larger than the design trajectory. The deviation of drilling trajectory leads to the appearance of blank zone in the area cov...
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| Autor principal: | |
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| Formato: | Artigo |
| Idioma: | Chinês |
| Publicado em: |
Editorial Office of Safety in Coal Mines
2022-01-01
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| coleção: | Meikuang Anquan |
| Assuntos: | |
| Acesso em linha: | https://www.mkaqzz.com/cn/article/id/7789 |
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