What happens to the vast caverns left underground after all the oil and gas has been used up?
Many people believe that crude oil and natural gas are contained in huge cave-like structures deep underground. *..Geological studies of sedimentary rocks indicate that oil originated during the deposit of dead marine organisms together with sand, silt and other sediments which formed the rocks under the sea beds. The formation of layers of rocks continued to take place and to build up containing the organic matter of the marine organisms and to create high pressure and temperature. *..In the absence of oxygen, and under the effect of the combined factors of pressure, temperature, catalysis and time, the chemical components of these marine substances have undergone break-down and transformation into HYDROCARBON compounds trapped in small pores (pockets) in the rocks, the result of which was the formation of crude oil and natural gas within the rocks. *..While the oil and gas were forming in the rock beds, it also tended to move (migrate) in an upward direction. This takes place from th
