Natural Gas Production
Between 80% and 90% of the natural gas used in the United States is domestically produced. Natural gas is primarily made up of methane, with low concentrations of other hydrocarbons, water, carbon dioxide, nitrogen, oxygen, and some sulfur compounds.
Natural gas is primarily extracted from gas and oil wells. Gas trapped in subsurface porous rock reservoirs is extracted via drilling. Additionally, advances in hydraulic fracturing technologies have enabled access to large volumes of natural gas from shale formations.
Chemically identical to conventional natural gas, renewable natural gas (RNG) is the purified product used as a vehicle fuel, which is produced from decaying organic materials. Biomethane, which is another term for this processed pipeline-quality fuel, refers to biogas that has been treated to be interchangeable with traditional natural gas but is often used separately from vehicle applications. Like conventional natural gas, RNG can be compressed (CNG) or liquefied (LNG) for use in vehicles. Learn more about CNG and LNG.