Making sure your separator can handle pigging liquids
High pressure separation is first unit operation in most oil and gas facilities. Their role is complex. Wellsite fluids transported to processing facilities in pipelines are subject to pressure and temperature changes as well as trajectory changes during transmission. The need to pig the incoming lines adds another complexity.
Correctly predicting the liquid holdup in a pipeline requires both an accurate thermodynamic and hydraulic model. The thermodynamic model must correctly predict the phase behaviour of the fluid and the hydraulic model must account for vapour-liquid slip in the pipeline.
Key topics are the characterization of the wellsite fluid and the influence of inclination changes on two-phase flow and liquid holdup.
This paper describes how Bryan Research & Engineering make sure that the separator can handle the additional liquids from pigging.