Gas control technology of sleeve milling and fishing for directional drilling in broken soft coal seam

Aiming at the technical problem of abnormal gas outflow caused by collapsed holes in the process of directional drilling and sleeve milling in broken-soft coal seams, a gas prevention technology was proposed for directional drilling and sleeve-milling salvage in broken-soft coal seams. On the basis...

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Bibliographic Details
Published in:Meikuang Anquan
Main Authors: Xu YANG, Jianqiang WANG, Hongjie ZHANG, Jie ZHANG, Yazhou ZHANG, Hanjing HUANG, Tianzhu CHEN
Format: Article
Language:Chinese
Published: Editorial Office of Safety in Coal Mines 2024-02-01
Subjects:
directional drilling
gas gushing
stuck drill accident
sleeve milling and fishing
broken soft coal seam
Online Access:https://www.mkaqzz.com/cn/article/doi/10.13347/j.cnki.mkaq.20221798

Internet

https://www.mkaqzz.com/cn/article/doi/10.13347/j.cnki.mkaq.20221798

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