Critical Gas Flow Rate

Definition - What does Critical Gas Flow Rate mean?

Critical gas flow rate can be defined as the flow rate of a gas, below which certain liquids cannot be pushed or lifted to the surface. Generally, this term is used in production testing phase. Critical gas flow rate is also the flow rate of the gas which is equal to the speed sound in a particular fluid. During the gas production phase, if this rate exceeds, it can double the chances of corrosion in the pipelines.

Petropedia explains Critical Gas Flow Rate

Several tests are conducted on an oil well to determine its productivity and whether it is feasible to source oil and gas from it or not. During production testing, critical gas flow rate is checked so as to determine whether the fluids from the bottom can be lifted on the surface or not. Critical gas flow is the rate of the gas flow under which a few types of liquids cannot be pumped to the surface. If the critical gas flow rate is higher, it can lead to the corrosion of the pipes.

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