ENST 0842 Lecture Notes - Lecture 4: Liquefied Natural Gas, Ethane, Butane
3 Feb 2020
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Propane, butane - used for cooking/heating rural households. Methane - used for heating and power plant electricity. Increasing use for electricity, transportation, and commercial cooling. Fewer emission rates: toxic emissions, hydrocarbon, carbon monoxide. Travel in ships inside large insulated storage tanks. Us doesn"t have as much of a demand for importation with emergence of local resource locations. Move upward until reaching impermeable (not allowing fluids to pass through) rock. Located in structural taps - underground geologic structures that trap natural gas and oil. Expensive process, but can reveal gas deposits (salt domes, deposit wells) Hydraulic fracturing - extract gas from shale; lowers dependency on importation of natural gas. Us - large deposits of natural gas/shale; 35% of domestic supply. Us - may have reached peak oil extraction - max amount of extraction from reserves. Depends on 1. locating more deposits, 2. Development of future extraction technologies: changes in global consumption rates. Marcellus shale - store of natural gas in us.
