Methane and Natural Gas as Engine Fuels
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Methane and Natural Gas as Engine Fuels book
Natural gas is usually the volatile portion of crude petroleum. It normally occupies under high pressure the porous rocks of oil reservoirs above the liquid fuel zone. The gas is also found in dry form or nonassociated with oil gas fields. Initially, when the prime objective was the production of oil, the gas was traditionally considered a nuisance and was often wasted and flared off. Unfortunately, some significant amounts of gas are still being flared when the gas cannot be effectively utilized locally, pumped back into wells to enhance oil recovery, or transported to potential markets via pipelines over long distances.