Toolbox for Flow Assurance engineers
Pyfas is a python toolbox for flow assurance engineers.
At this moment in time the toolbox contains wrappers for:
- Unisim Design
- Pipesim (via OpenLink, for all the versions <= 2012.4)
Olga is the standard de facto for the dynamic simulations of multiphase systems (single pipelines or complex network) in the oil and gas indistry. The simulator has text input and output files; with pyfas you can expose Olga results to python (both trends and profiles) or dump all the results to excel/csv for your post-precessing.
UnisimDesign is mainly a process simulator but can be used also to simulate pipelines or networks in particular providing some external components. Differently from Olga Unisim (unfortunately) does not use text input or output files, the only way to communicate with the software is via a COM interface using pywin32. Pyfas does not pretend to exposes all the possible functionalities of Unisim, only a very limited subset is available at the moment.
PipeSim is a steady state simulator for both single branches or networks
- Tab files processing
- Surge volume calculation
- PIRead functionality
Tab files are look-up tables with specific thermodynamic properties at given pressure and temperature intervals used for flash calculations by dynamic simulators. These files are generated by thermodynamic simulators (like PTVTsim) and it is good practice to have a look on this information before a dynamic simulation. With pyfas it is possible to generate 3d plots of all the properties and examine more in detail critical ones.
The surge volume calculation utility returns the surge volume given a drain rate and a liquid flowrate time series. Not more than a simple discrete integration.
With PIRead it is possible to retrieve PI values from a PI server.
A live demo should be available here below (no installation required)
pip install pyfas
Examples and documentation
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