Slugging in Pipelines: What You NEED to Know
For the unprepared, liquid slugs in multiphase pipelines can have disastrous consequences ranging from increased corrosion, production impairment, and compressor damage to flooding of separators and damage to process equipment. The key to avoiding problems with slugging in pipelines is to determine the type and magnitude of the slug now and into the future. In this talk, the 4 different types of slugging phenomena will be described. These include hydrodynamic slugs, terrain-induced slugs, slugs caused by flow rate changes and slugs formed by pigging operations. Procedures for handling and modeling each type of slug will be outlined using both steady state and transient modeling tools. Videos of actual slug flow in pipelines will be shown to help give a better understanding of slug flow. The talk will also describe the current status of mechanistic slug modeling and areas of active research. Once the kind and size of slug is determined, then the appropriate steps can be taken to avoid problems.
Mona Trick, P.Eng. is an Advisor for SPT Group, a Schlumberger company. Throughout her 30-year career, she has been involved in the application of flow modelling to the design, analysis, and optimization of systems involving multiphase flow, including the identification and mitigation of challenges associated with slug flow. Her principle responsibility is the on-going development of FORGAS, SPT Group’s gas and oil field production forecasting software. She has written and presented more than 10 technical papers for the SPE and other professional organizations. She holds a B.Sc. degree in mechanical engineering from the University of Calgary, is a registered professional engineer in Alberta, Canada and is a 25 year member of the SPE.