Natural Gas Liquids

Definition - What does Natural Gas Liquids mean?

Natural Gas Liquids, abbreviated as NGL’s are components of natural gas that remain in liquid state instead gaseous state when petroleum is processed. They are fossil fuels which are highly valuable in the market and traded separately just like crude oil and natural gas. Natural gas liquids are formed when hydrocarbons get separated in a gas processing plant from the gaseous state to liquid state.

Petropedia explains Natural Gas Liquids

Natural Gas Liquids are produced from the remains of plants and animals that existed millions of years ago. These organisms were buried and exposed to heat as a result of being highly compressed underneath thousands of meters of soil and rock. These forces transform the once living organisms into natural gas and hydrocarbons.

The classification of natural gas liquids is based on the vapor pressure and is as follows:

  • If they have a low vapor pressure, they will be in the form of condensates.
  • If they have an intermediate vapor pressure, they will be in the form of natural gasoline.
  • If they have a high vapor pressure, they will be in the form of liquefied petroleum gas (LPG).

The following hydrocarbons form the composition of NGL’s:

  • Propane
  • Butane
  • Pentane
  • Hexane and
  • Heptane
NGL’s do not contain any methane and ethane.
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