International Conference on Multimedia Information Networking and Security · 1981 · 12 citations · 0 references
Geotechnical EngineeringGas Field DevelopmentEngineeringMine VentilationMine WaterEnvironmental EngineeringCivil EngineeringUnderground Piping SystemNatural Gas Hydrate SystemTrenchless TechnologyUs BureauGas StorageCoal Bed MethaneUnderground Degasification ProjectCoal-water Slurry FuelPetroleum EngineeringDrillingUnderground Pipeline
The US Bureau of Mines has completed an underground degasification project in which an underground piping system was used to transport methane from the coal bed to the surface. In a 10-month period, 4 horizontal holes were drilled to an average depth of 1450 ft. All 4 holes were surveyed vertically and azimuthally. In 991 days of degasification, 255 MMCF of gas was drained from the coal bed. The underground piping system proved to be a safe and effective means of transporting methane from the coal bed to the surface. 10 references.