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For questions regarding incorrect/outdated entries or suggestion for adding additional terms, please contact Martin Erne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
evaporative loss

The decrease in volume due to product volitility.

evaporative loss
The decrease in volume due to product volatility.

evaporator

A vessel or equipment used to heat or expand a liquid into its vapor phase.

evaporator
A vessel or equipment used to heat or expand a liquid into its vapor phase.

expansion refrigeration

The cooling obtained from the expansion of a gas. See "Joule-Thompson".

expansion turbine

A centrifugal axial flow device through which a high pressure gas's volume is increased to produce work from the pressure, energy, gas, or steam.

extraction

The process of separating one material from another using effort or force.

feed tank

A vessel from which a stream is batched or continuously fed for further processing.

field processing unit

Equipment through which a stream passes before the fluid reaches a plant or sales point.

fifty-percent point

The temperature at which half of a material has distilled during an ASTM D-86 distillation test.

fin-tube

A pipe having an extended external surface to increase the contact area with outside fluid.

final boiling point (FBP)

The max temperature at which the distillate cannot be collected.

fired heater

A furnace in which natural gas or other fuel is burned to provide energy in the form of heat.

flammable

Capable of being ignited.

flare gas

Hydrocarbons in a vapor phase that are burned for the purpose of disposal.

flash point

The lowest temperature at which vapors from a liquid will ignite.

flash tank

A vessel used for liberating the gas molecules out of the liquid product.

flooding (processing)

An overload condition of a process column or vessel which is characterized by excessive buildup of liquids.

flooding (processing)
An overload condition of a process column or vessel which is characterized by excessive buildup of liquids.

flooding (resevoir)

A means of improving oil recovery by introduction of a fluid to build resevoir pressure.

forced draft

Air blown by a fan or blower. Often refers to combustion air or air used in a fin fan cooler.

formation gas

Gas initially produced from an underground reservoir.

formation gas
Gas initially produced from an underground reservoir.

fouling factor

A factor used in heat transfer calculations that represents the resistance to the flow of heat caused by buildup of a foreign substance in the flowing fluids.

fouling factor
A factor used in heat transfer calculations that represents the resistance to the flow of heat caused by buildup of a foreign substance in the flowing fluids.