The scope of slug catcher (vessel type) is the separation of the two-phase flow and temporary storage of the bulk liquids in gas pipeline system. Natural gas pipelines often contain significant amounts of liquids ( hydrocarbon condensations, lubricating of the gas, oils, produced water, and chemicals used in production, treatment, compression or dehydration), that can interfere with the proper operating of the pipeline and related equipment such as compressor, regulators, filters, meters and valves.

Fasam’s "slug catcher" designs are based on reducing fluid velocities to promote a "stratified" flow regime and subsequent gravity separation. To obtain this the slug catcher must control and dissipate the energy in the incoming gas stream as it enters the slug catcher to minimize turbulence and ensure that the gas and liquid flow rates are low enough so that gravity segregation can occur.

This type of slug catcher design must not only promote stratification, but must also be capable of handling the largest slug volume without permitting slug formation in the slug catcher. Thus, selecting slug catcher diameter, length, and process nozzles location are important part of the slug catcher design.

Fasam has run many CFD calculations to reach the optimized solution to cover both separation characteristic and pressure drop.