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Get the best out of PVTsim

Within a company, new employees need training, more experienced employees move into a new field of work or the technologies of the company it-self move into a new field. Besides that the models and methods and the software used in the industry are constantly developing. These are all reasons for attending a course. The goal in either case is to be able to make the best out of the software, and to do it in the correct way. Training industry personnel on PVT and phase behavior of petroleum production systems has been key part of Calsep’s activities for the past 30 years. Calsep offers open courses as well as in-house courses to reservoir engineers, process engineers, engineers dealing with flow assurance or multi phase flow metering, laboratory staff and others needing to apply PVT simulation software in their work.

With its mix of theory and hand-on exercises, the courses are appropriate for those wanting to get started using PVTsim and for those wanting to know the details of the models and methods used. Through the open book philosophy when it comes to documentation of models and methods, Calsep offers full insight into the internals of PVTsim. The courses are taught by the engineers developing and using the software, giving the best pre-requisites for obtaining qualified recommendations on the use and in-depth knowledge about what the software does.

Calsep regularly hosts User Group Meetings (UGMs) at which the newest developments in PVTsim Nova are presented and the users get the chance to give feedback and make suggestions for new features and new models to be considered. 

In-house courses

Alongside the open courses, Calsep also offers in-house courses. These courses may have the same extent and content as the open courses or the content and level may be tailored e.g. for process or reservoir engineers, or engineers within the field of multi-phase flow metering or flow assurance.

An in-house course is often held at the customers training facilities, but can be held at any suitable venue, including Calsep's offices.

Below are a few examples of possible courses...

Flow Assurance PVT Course


  • Compositional input to PVT simulators
  • Equations of state
  • C7+ characterization
  • Simulation of PVT experiments
  • Regression to PVT data
  • Viscosity Models and Tuning to Viscosity Data
  • Wax and Asphaltenes
  • Water Salt and Inhibitors
  • Gas Hydrates

The exercises will exemplify the various regression options in PVTsim and the different flow assurance modules in PVTsim.


Flow assurance engineers who want to be able make optimum use of PVTsim in a flow assurance context.

Advanced PVT Course (On Demand)


  • Quality Check of Fluid compositions
  • Classical and Non-Classical Equations of state (EOS) and Flash Calculations
  • Common EOS for Multiple Fluids
  • Minimum Miscibility Pressure (MMP) Calculation Techniques
  • Wax Formation and Deposition
  • Asphaltene models
  • Cubic EOS customized for Aqueous Mixtures
  • Allocation
  • Gas Hydrate Models

An advanced course requires that all participants have working experience with PVTsim. The topics are covered in more detail than in a standard course. More room is left in the schedule for open discussions and less time spent on computer exercises.


Reservoir, process and flow assurance engineers with some experience in PVTsim or other PVT simulators who want make advanced use of PVTsim and have a better understanding of the models used in the program.