Session: Effectively Drilling In Rock With Midsize HDD Equipment

摘要

1. One bore of 1,345 ft (404 m) in layered siltstone and sandstone rock 2. Bore ended at seafloor exit 3. Drilling rate of 125 to 275 feet (38 to 84 m) per day 4. 6-inch (152 mm) HDPE water line pulled back with 14-inch (360 mm) backreamer 5. Ditch Witch JT4020 All Terrain directional drill.