Typical Composition of Natural Gas | ||
Methane | CH4 | 70-90% |
Ethane | C2H6 | 0-20% |
Propane | C3H8 | |
Butane | C4H10 | |
Carbon Dioxide | CO2 | 0-8% |
Oxygen | O2 | 0-0.2% |
Nitrogen | N2 | 0-5% |
Hydrogen sulphide | H2S | 0-5% |
Rare gases | A, He, Ne, Xe | trace |
In its purest form, such as the natural gas that is delivered to your home, it is almost pure methane.
http://www.naturalgas.org/overview/background.asp
LNG, liquid natural gas is pure methane chilled to -260°F.
Depending on the shale formation we can get everything from crude oil, natural gas liquids to dry methane. Different shales have different mixes just like traditional fields can be nearly all oil, all natural gas or a mix with other liquids often referred to as condensate or NGLs.
Thanks for quick lesson in Natural Gas gentlemen.