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To: TexasCajun
Natural gas is a combustible mixture of hydrocarbon gases. While natural gas is formed primarily of methane, it can also include ethane, propane, butane and pentane. The composition of natural gas can vary widely, but below is a chart outlining the typical makeup of natural gas before it is refined.

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.

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.

11 posted on 01/08/2013 8:15:49 AM PST by thackney (life is fragile, handle with prayer)
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To: thackney; Cletus.D.Yokel

Thanks for quick lesson in Natural Gas gentlemen.

18 posted on 01/08/2013 8:36:53 AM PST by TexasCajun
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