Schlumberger ECLIPSE 2025.3

The Eclipse industry-reference reservoir simulator offers the industry’s most complete and robust set of numerical solutions for fast and accurate prediction of dynamic behavior for all types of reservoirs and development schemes.

The Eclipse simulator has been the benchmark for commercial reservoir simulation for more than 25 years thanks to its extensive capabilities, robustness, speed, parallel scalability, and unmatched platform coverage.

Available versions: 2025.x , 2024.x , 2023.x ,…

Schlumberger Petrel and Studio 2024.9 Tested Picture

The Eclipse 2025.2 release includes developments enhancing the performance, usability and functionality of the simulators.

Eclipse 2025.2 Release updates

Density calculation improvements in New Energies

An alternative “compressibility model” has been made available for cases using CO2SOL and H2SSOL functionalities. In this approach, water properties can be represented as tables against pressure when saturated with CO2 or H2S. Undersaturated properties are constructed using a compressibility model.

This approach is also available in the Intersect™ reservoir simulator and may be useful in matching results between the two simulators.

Flexible group control extensions

To provide flexibility in well production apportioning in advanced field management operations, user defined arguments (UDAs) are now available in the WGRUPCON keyword. This means that well guide rates and their scaling factors can now be defined as expressions rather than fixed values.

New and improved functionality

For both the Eclipse 100 and Eclipse 300 simulators

When setting gas concentration to coalbed methane (CBM) models (e.g., via GASCONC), validation has been added to treat input values above the saturation point.

For the Eclipse 100 simulator

Oil field manager (OFM) connection reporting has been enhanced to provide the XY location of the connection rather than its wellhead.
Parallel reporting of cells which have fallen below the specified bubble/dew point has been made clearer.
Reporting of CBM models has been improved, with clearer presentation of free/adsorbed gas amounts.

For the Eclipse 300 simulator

For consistency with Intersect reservoir simulator and improved calculations, an option has been added to use an exponential formulation rather than a one-term Taylor series for thermal oil phase density.
The combined use of GASWAT/isothermal CO2STORE and endpoint scaling has been improved.
Enhancements have been made in the reporting of vertical flow performance (VFP) table extrapolations in parallel runs.
Reporting of rock volumes for CBM models has been improved.
Messaging and validation for keywords associated to multisegmented wells have been improved.