Natural gas: also known as oilfield gas, liquefied petroleum gas, petroleum associated gas.
The chemical composition of natural gas and its physicochemical properties vary from place to place:
The main ingredient is methane, which also contains a small amount of ethane, butane, pentane, carbon dioxide, carbon monoxide, hydrogen sulfide, etc. In the absence of hydrogen sulfide, it is a colorless, odorless, flammable and explosive gas, with a density of 0.6~0.8g/cm3, which is lighter than air. Generally speaking, those containing more than 90% methane are called dry gas, and those containing less than 90% methane are called damp gas.
