Mine-used electromagnetic MWD system and its application
Aiming at the problems of high manufacturing cost and easy damage of communication cable joint in the central cable type drill pipe, which is the cable transmission device for directional drilling in underground coal mine, an electromagnetic measurement while drilling（ＥＭ－ＭＷD） system used in coal min...
| Published in: | Meikuang Anquan |
|---|---|
| Main Authors: | , , |
| Format: | Article |
| Language: | Chinese |
| Published: |
Editorial Office of Safety in Coal Mines
2021-09-01
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| Subjects: | |
| Online Access: | https://www.mkaqzz.com/cn/article/id/7624 |