Midstream

Midstream Glossary

Definitions of words and terms used in the gas processing industry.
For questions regarding incorrect/outdated entries or suggestion for adding additional terms, please contact Martin Erne

Term
Definition
Common Use Examples
Diethanolamine (DEA)
A specific secondary amine with the chemical compound formula of HN(CH2CH2OH)2.

EOR (enhanced oil recovery)

A recovery technique that alters the chemical composition of the oil that makes it easier to extract.

EOS (Equation of state)

A mathematical expression relating pressure, temperature and volume of a fluid.

EP-mix (ethane-propane mix)

A product defined by specifications in GPA 2108.

EPA (Environmental Protection Agency)

A branch of the federal government that oversees and enforces the regulation of how humans & industry interact with nature.

Engler distillation

The process of determining the volatility characteristics of a petroleum product by distilling the product through a range of temperatures.

Engler distillation
The process of determining the volatility characteristics of a petroleum product by distilling the product through a range of temperatures.

Environmental Protection Agency (EPA)
A branch of the federal government that oversees and enforces the regulation of how humans & industry interact with nature.

Equation of state (EOS)
A mathematical formula showing the relationship between the values of the pressure, volume, and temperature for the mass quantity of a particular substance.

FPSO

Floating production, storage, and offloading vessel used in offshore operations.

FPSO
Floating production, storage, and offloading vessel used in offshore operations.

Hydrocarbon Component Fraction

A portion of mixture of hydrocarbons usually defined by boiling range such as naptha, gas oil, kerosene, etc.

Joule-Thomson effect

The change in gas temperature which occurs when the gas is expanded from a higher pressure to a lower pressure.

LNG (liquefied natural gas)

The light hydrocarbon portion of natural gas which has been liquefied.

LPG (liquefied petroleum gas)

Commercially available fuel products produced from gas processing, fractionation, and refining.

LTX unit (low temperature extraction unit)

A unit which uses the refrigerating effect of adiabatic expansion for improved liquid recovery from rich gas streams.

LTX unit (low temperature extraction unit)
A unit which uses the refrigerating effect of adiabatic expansion for improved liquid recovery from rich gas streams.

Liquid Volume Percent
A unit of concentration representing the space occupied by a component in a liquid mixture relative to the total space occupied by the mixture, expressed as a percentage.

MER

An acronym related to efficiencies.

MER
An acronym related to efficiencies.

MMscf

A unit for measuring or expressing the volume of a million cubic feet of gas at standard conditions. The pressure and temperature conditions for the standard measurement must be defined.

MMscf
A unit for measuring or expressing the volume of a million cubic feet of gas at standard conditions. The pressure and temperature conditions for the standard measurement must be defined.

Mass Percent
A unit of concentration representing the mass of a component in a mixture relative to the total mass of the mixture, expressed as a percentage.

Mscf

A unit for measuring or expressing the volume of a thousand cubic feet of gas at standard conditions. The pressure and temperature conditions for the standard measurement must be defined.

Mscf
A unit for measuring or expressing the volume of a thousand cubic feet of gas at standard conditions. The pressure and temperature conditions for the standard measurement must be defined.