Why Natural Gas
Types of Natural Gas
- Natural gas that is found trapped within shale formations. Shale formations are very fine grained clastic sedimentary rocks composed of clay, silt and other particulate minerals.
- Natural gas that is found rocks, such as sandstone, siltstone or limestone which have extremely low permeability.
- A sweet methane gas found in naturally occurring coal seams.
- Natural gas with a relatively low concentration of sulfur compounds, such as hydrogen sulfide.
- Natural gas with a relatively high concentration of sulfur compounds, such as hydrogen sulfide.
Liquified natural gas (LNG)
- Natural gas (primarily methane) that has been liquefied by reducing its temperature to -260 degrees Fahrenheit at atmospheric pressure
Compressed natural gas (CNG)
- Natural gas compressed to a pressure at or above 200-248 bar (i.e., 2900-3600 pounds per square inch) and stored in high-pressure containers. It is used as a fuel for natural gas-powered vehicles