Wellhead natural gas may also contain nonhydrocarbons such as sulfur, helium, nitrogen, hydrogen sulfide, and carbon dioxide, most of which … Natural gas is made up of a mixture of four naturally occurring gases, all of which have different molecular structures. Natural gas definition: Natural gas is gas which is found underground or under the sea. Natural gas is a mixture of combustible gases formed underground by the decomposition of organic materials in plant and animal. Natural gas is processed for sale and consumption. Conventional natural gas deposits are commonly found in association with oil reservoirs, with the gas either mixed with the oil or buoyantly floating on top, while unconventional deposits include sources like shale gas, tight gas sandstone, and coalbed methane. It is derived from biogas, which is produced from decomposing organic waste from landfills, agricultural waste and wastewater from treatment facilities. Natural gas has slowly gained speed in its popularity over other household energy sources such as oil or electricity. Natural gas withdrawn from natural gas or crude oil wells is called wet natural gas because, along with methane, it usually contains NGL—ethane, propane, butanes, and pentanes—and water vapor. The main component is methane, also known as CH4. It is collected and... | Meaning, pronunciation, translations and examples Log In Natural gas is composed mostly of methane, but it also contains small amounts of ethane, propane, butane, and pentane. What is Natural Gas? Natural gas deposits are often found near oil deposits. Deeper deposits—formed at higher temperatures and under more pressure—have more natural gas than oil. The biogas is captured and cleaned to create carbon neutral Renewable Natural Gas (also called biomethane). This is largely due to the number of natural gas lines being built to power many of the newer residential developments, as well as many of the preexisting neighborhoods. Deposits of natural gas close to the Earth’s surface are usually dwarfed by nearby oil deposits. The deepest deposits can be made up of pure natural gas. 1 Renewable Natural Gas is produced in a different manner than conventional natural gas. There are two general categories of natural gas deposits: conventional and unconventional. It is usually found in areas where oil is present, although there are several large underground reservoirs of natural gas where there is little or no oil. To define natural gas, we must to understand what it consists of, beyond an understanding that it comes from nature. Natural gas is a fossil fuel that is both odorless and colorless in its purest form.