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Keyword [directional long drilling]
Result: 1 - 4 | Page: 1 of 1
1.
Study On Stability And Optimal Arrangement Of Boreholes Drilled By 1000m Drilling Machine For Gas Extraction In Yuwu Coal Mine Tunneling Faces
2.
Study On Gas Control Technology In Working Face Of Yangliu Coal Mine
3.
Research On Overlying Rock Fracture Evolution Law And Directional Drilling Gas Drainage Technology In Shaqu No.1 Mine
4.
Research On Three-dimensional Comprehensive Gas Pre-drainage Technology And Application In Huangling Mining Area
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