Natural gas (Natural gas), petroleum is the address in the manner of natural gases or fumes contain. Methane (CH4) and pp (C2H6), propane (C3H8) gas and gas butane (C4H10) are mixed? Pure, colorless gas without smell may occur in conjunction with crude oil. The last type of section it is natural gas liquids (Condensate) is in the same group as hydrocarbon gas but has a status of failed, when the reservoir beneath the Earth's surface. Which has a high temperature and pressure, there will be a gas becomes a liquid. When it comes up to the surface world.
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