In-seam Gas Pre-drainage Borehole
The in-seam gas pre-drainage drilling project is located in Australia and was constructed using the VLD-1000 directional drilling rig. It is mainly used for coal seam gas pre-drainage and mine gas control. The project adopts directional long-hole drilling, with borehole lengths exceeding 2,000 meters and the longest borehole reaching 2,151 meters.
