New Software Release

Symmetry 2020.3 Now Available

Wednesday, 30 September 2020

Product details

Symmetry process software platform captures all aspects of your models from reservoir to product distribution. The Symmetry platform offers a unique opportunity to model your process workflows in one environment, integrating pipelines, networks, and facilities models, while ensuring consistent thermodynamics and fluid characterization across the full system. This approach enables companies to optimize processes in upstream, midstream, and downstream sectors, maximizing profits and minimizing capex.

Learn more about Symmetry

Key features of this release

Symmetry 2020.3 is an update release incorporating new features and improvements from previous versions. Symmetry 2020.3 now includes  integration with the OLGA dynamic multiphase flow simulator, which enables direct interaction between the OLGA simulator and Symmetry platform simulation models. This integration allows for wide-scope integrated models where transient behavior of gathering networks, distribution systems, and facilities can be studied under the same environment.

Improvements to the network solver provide additional functionality for flow specifications at the sinks as well as additional calculation modes for fittings in pipe segments.
Some of the key new features are listed below.

Integration with other Schlumberger software

  • New OLGA simulator integration. 
  • Property table
    • Added option to generate, view, and export OLGA simulator fluid tables, which can be imported into OLGA simulator simulation runs. Fluid tables can also be exported in fixed (legacy) format for users of OLGA ROCX
    • Added option to generate, view, and export PIPESIM steady-state multiphase flow simulator fluid tables, which can be imported into PIPESIM simulations. Fluid tables can also be exported in revision A (legacy) format

Network Solver

  • Added support for flow specifications (mole, mass, and standard liquid volume) at sinks
  • When the network is solving with PH flash, it will now solve all devices within the network with PH flash (including valves with Cv specifications, orifice meters, rotating equipment, and flare tips)
  • Fixed missing update to fitting diameter when there is a change to the pipe diameter
  • Fixed phase calculation errors when initializing Inflow Performance Relationship (IPR) curve
  • Fixed issue where results for zero-flow legs in a network may not be calculated with zero flow but instead show values from a previous solver iteration, which could result in consistency errors
  • Improved separator stability in network solver when running with low vapor flows in networks with a single stack and no loops

Flare Workspace

  • Added 2-K (Hooper) and 3-K (Darby) K methods for supported pipe fittings in steady state
  • Fixed issues related to missing updates when importing cases with networks or scenarios
  • Fixed issue with flare XML file import adding flare tip curve points out of order
  • Fixed issue with flare XML file import not recognizing # as a special character 


  • Hydrate inhibitors (methanol, ethylene glycol, triethylene glycol, ethanol, glycerol, 1,2-propylene glycol, and 1,3-propylene glycol) are now allowed to be part of the aqueous phase
  • Fixed compounds containing ";" in their names. Compounds fixed are: 
    • 1,1':2',1''-terphenyl, 4'-phenyl- 
    • 1,1':2',1''-terphenyl, 3'-phenyl- 
  • Fixed label mismatch in hydrate parameters for APRNG2 and APRNG
  • Fixed subflowsheets not using the global liquid reference T and P. They were using the parent flowsheet settings


  • Heat exchanger: Improved default simple flash model building criteria to speed up heat exchangers with pressure drops of more than 15–20 psi and exposed criteria to validate and tune
  • Property table: New option to invert the Z-density and phase plots
  • Towers: Improved solve time of towers with pump arounds or side strippers
  • Valve: Improved valve convergence and consistency validation when solving in a network at choked flow

A full detailed list of all new features as well as improvements and fixes is available in the “What's New” document in the Symmetry platform installation.