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For questions regarding incorrect/outdated entries or suggestion for adding additional terms, please contact Martin Erne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

The absolute discharge pressure from a compressor divided by the absolute intake pressure.

compression ratio
The absolute discharge pressure from a compressor divided by the absolute intake pressure.

compressor

Mechanical device used to increase the pressure and decrease the volume.

compressor
A mechanical device that increases the pressure of a compressible fluid by reducing its volume.

compressor clearance

The ratio of the volume remaining in a compressor cylinder at the end of a compression stroke to the volume displaced by one stroke of the piston.

compressor clearance
The ratio of the volume remaining in a compressor cylinder at the end of a compression stroke to the volume displaced by one stroke of the piston.

compressor station

A facility consisting of one or more compressors.

compressor station
A facility consisting of one or more compressors.

computational fluid dynamics ("CFD")
The process of mathematically predicting physical fluid flow by use of computer modeling.

condensate

A mixture of hydrocarbons that have undergone a change in phase from vapor to liquid due to changes in temperature and pressure.

condensate
A mixture of hydrocarbons that have undergone a change in phase from vapor to liquid due to changes in temperature and pressure.

condensate well

A gas well producing from a gas condensate reservoir.

condensate well
A gas well producing from a gas condensate reservoir.

condenser

A heat exchanger for cooling and transforming vapors to the liquid state.

condenser
A heat exchanger for cooling vapors to the liquid state.

connate water

H2O in a particular formation which fills a portion of the pore space.

connate water
Water in a particular formation which fills a portion of the pore space.

control valve

A device to regulate the flow and/or pressure of a fluid.

control valve
A device to regulate the flow and/or pressure of a fluid.

cooler

A heat exchanger which reduces the temperature of a fluid by transferring the heat to a non-process medium.

cooling tower

A structure to cool a stream of circulating water through contact with air, which can be induced by natural draft or by fans.

cooling tower
A structure to cool a stream of circulating water through contact with air, which can be induced by natural draft or by fans.

copper strip test

A procedure used to detect the presence of corrosive contaminents in liquid products.

copper strip test
A procedure used to detect the presence of corrosive contaminants in liquid products.

corrosion coupon

A piece of metal inserted into a flowing stream to monitor corrosion rate and indicate corrosion-inhibitor effectiveness.