2021 Latest Features


Improved corrosion model

OLGA now includes the updates from the NORSOK M-506 standard, incorporating organic (acetic) acids in the computation of pH. With this, OLGA can now accurately simulate the effects of this on the corrosion rate

PH tables

Pressure Enthalpy (PH) tables in OLGA

This functionality allows users to utilize equation-of-state selections for pressure/enthalpy calculations for single component systems

Extending Python scripting for the OLGA simulator

Improved scripting capabilities for OLGA   

OLGA now includes a Python API wrapper for the OLGA messaging SDK. This extends the scripting capabilities in addition allowing users to take advantage of this powerful tool


FieldTwin™ integration to OLGA for profile generation and import

FieldTwin™ design from FutureOn enables users to build and visualize a digital copy of their physical assets. OLGA 2021.1 allows the import of profiles from FieldTwin directly to the OLGA profile generator to use for further analysis and simulation.


Achieve higher accuracy when operating around critical point

The computational procedure for speed of sound has been improved. This ensures higher accuracy when operating around the critical point


Enhanced flexibility for high-pressure protection system design

OLGA 2021.1 introduces improved flexibility and usability for users to assist in design of high-pressure protection systems and the associated modelling of the scenarios

OLGA 2021 Features

Pure CO2

Improved functionality for pure CO2

Several improvements for existing CO2 capabilities have been implemented—including an improved table for single component CO2 option, improvements for the viscosity model, and priority fixes for tuning of mass transfer rate for a single-component model.

Low pressure

Improved handling of low-pressure situations?

It is now possible to use a special low-pressure handling feature. When activated, if below a defined pressure threshold, the OLGA simulator calculates the fluid properties and flashing with special consideration to avoid numerical problems.

Injection rate calculations

New mass-based option of injection rate calculations  

OLGA 2020.2 introduces a new key in the inflow performance relationship (IPR) keywords. The key can be used to select how to convert the volume flow rate of reservoir fluid at standard conditions to in situ injection rate and improves usability for such scenarios.

OLGA - pressure drop prediction

Better prediction of pressure drop

The HD flow model has been updated to improve its accuracy for gas condensate production systems. Extensive improved pressure-drop predictions at high gas rates for low liquid loading.

OLGA - water accumulation

More accurate water accumulation?

The momentum mixing across the oil/water interface has been reduced to increase oil-water slip and increase water accumulation for gravity dominated flow at high gas flow rates.

OLGA Slug Initiation

New slug initiation model    

The slug initiation model is extended to include initiation of slug bubbles in bubbly flow improving prediction of slug dynamics in liquid dominated systems.

OLGA - pig modeling

Improved pig modeling capabilities

Improved pig model capabilities to simulate complex pigging scenarios involving long traveling distances, complicated pipeline geometry as well as multiple pig trains with large pressure and/or liquid discontinuities across the pigs.

OLGA - HA model

HA model used for aqueous phase

The CSMA High Accuracy (HA) model for aqueous phase properties is used in OLGA Compositional Tracking improving accuracy when modelling aqueous component mixtures.

OLGA - Symmetry integration

OLGA and Symmetry integration

The integration between OLGA and Symmetry enables integration between upstream and process operations. High performance communication yields efficient data transfer and rapid insight.