Molecule Oxygen
Natural gas processing is a complex industrial process designed to clean raw natural gas by separating impurities and various non-methane hydrocarbons and fluids to produce what is known as 'pipeline quality' dry natural gas.
Natural gas that comes from crude oil wells is typically termed associated gas. This gas can have existed as a gas cap above the crude oil in the underground formation, or could have been dissolved in the crude oil.
Scheme Natural Gas Processing
Raw natural gas can also come from methane deposits in the pores of coal seams, and especially in a more concentrated state of adsorption onto the surface of the coal itself. Such gas is referred to as coalbed gas or coalbed methane. Coalbed gas is a from of natural gas that is has being extracted from coalbed. This coalbed gas has become an important source of energy in recent decades.
Natural gas is termed sweet gas when relatively free of hydrogen sulfide; however, some produced gas does contain this substance and thus is called sour gas.
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