Extinguishing burning oil and gas escaping at high pressure - from borehole, by tunnelling for underground access and diverting flow by pipe to safe distance

摘要

In the process to extinguish burning oil and gas wells where the oil or gas is escaping at high pressure from the borehole or riser pipe, supply of oil or gas is cut off from the fire. Underground access to the riser pipe (3) is obtd. from a safe distance, so that the pipe is exposed and can be drilled to allow the oil or gas to be safely diverted to the surface. Diverting oil or gas until the area (8) around the riser outlet (4) is cleaned up and the riser provided with a new preventer. Providing safe underground access (10, 11) to the riser pipe (3) is by mining methods. USE/ADVANTAGE - System offers a quick and practically danger-free soln. without use of explosives.