GAS PROCESSING

                                                 GAS PROCESSING 

Natural-gas processing it is process of purifying  natural gas by removing impurities, contaminants and higher molecular mass hydrocarbons to produce what is known as pipeline quality dry natural gas. 

Types of raw-natural-gas wellS

Raw natural gas comes primarily from any one of three types of wells: crude oil wells gas wells, and condensate wells.

ASSOCIATED GAS:- Natural gas that comes from crude oil wells is typically called associated gas. This gas can have existed as a gas cap above the crude oil in the underground reservoir or could have been dissolved in the crude oil, coming out of solution as the pressure is reduced during production.

non-associated gas:- 

Natural gas that comes from gas wells and condensate wells, in which there is little or no crude oil, is called non-associated gas. 

NATURAL GAS CONDENSATE  :- Gas wells typically produce only raw natural gas, while condensate wells produce raw natural gas along with other low molecular weight hydrocarbons. Those that are liquid at ambient conditions (i.e., pentane and heavier) are called natural-gas condensate (sometimes also called natural gasoline or simply condensate).

SOUR AND SWEET GAS :- 

Natural gas is called sweet gas when relatively free of hydrogen sulfide; gas that does contain hydrogen sulfide is called sour gas. 

ACIDIC GAS :- 

Natural gas, or any other gas mixture, containing significant quantities of hydrogen sulfide, carbon dioxide or similar acidic gases, is called acid gas.

Raw natural gas can also come from methane deposits in the pores of coal seams, often existing underground 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 (coal seam gas in Australia). Coalbed gas has become an important source of energy in recent decades.

PROCESSING PLANT :-