Pattern Lab

Maximize production and minimize risk

Successful production system design and operations requires a detailed understanding of multiphase flow behavior. Flow modeling and simulation provides valuable insights into flow behavior, including the physics describing flow through the entire production systems, from reservoir pore to process facility.

The OLGA dynamic multiphase flow simulator models time-dependent behaviors, or transient flow, to maximize production potential. Transient modeling is an essential component for feasibility studies and field development design. Dynamic simulation is essential in deepwater and is used extensively in both offshore and onshore developments to investigate transient behavior in pipelines and wellbores.

Transient simulation with the OLGA simulator provides an added dimension to steady-state analyses by predicting system dynamics such as time-varying changes in flow rates, fluid compositions, temperature, solids deposition and operational changes.

From wellbore dynamics for any well completion to pipeline systems with all types of process equipment, the OLGA simulator provides an accurate prediction of key operational conditions involving transient flow. 

Key flow simulation applications

The OLGA simulator enables key flow simulation applications, including 

  • liquids handling
  • sizing separators and slug catchers
  • managing solids
  • simulating key operational procedures including start-up, shut-down, and pigging
  • modeling for contingency planning
  • assessing environmental risk in complex deepwater drilling environments.

Over 30 years of research and development

Customer-supported innovation and research has been at the core of the OLGA simulator’s development for more than 30 years. Validation of the OLGA code with large-scale lab research and the largest database of actual production data from leading E&P companies are key factors in its ongoing development.

Major oil and engineering companies participate in the OLGA Verification and Improvement Project (OVIP), which has collected the world’s largest database of lab and field data. This data has been used to validate and adapt the multiphase flow models. Results are continuously implemented in the OLGA simulator, improving the core technology to better match the realities of operations.

Additionally, the Horizon project is cosponsored by seven major oil companies, which addresses problems related to the cost-effective development and safe operation of long-distance gas-condensate transport and long-distance transport of oil well streams.

Equinor awards SLB contract for Leak Detection System for Johan Sverdrup Phase-II development

Equinor has, through a technical qualification study, selected SLB for delivering a novel Leak Detection and Virtual Flow Metering solution for the multiphase production network in Johan Sverdrup Phase II. The solution is based on the OLGA Online* technology.

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Top New Features - Latest release


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

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Looking for supporting documentation?

We provide a range of supporting documents.


The OLGA Dynamic Multiphase Flow Simulator is now available in the Delfi digital platform

New insights can be gained through the utilization of the secure, cloud-based environment as increased accessibility and flexibility to more science in the GPM software is automatically and instantly at your fingertips.

Delfi digital platform

Training Courses


Need a training course?

NExT offers a comprehensive training program to support users of the SLB software, plugins, and other software products.