New Software Release

The Eclipse™ 2025.3 release includes developments enhancing the performance, usability, and functionality of the Eclipse reservoir simulator.

Release updates

Flexible well modeling with additional user defined argument (UDA) support

Additional UDA support has been given to the WELPI keyword. This keyword helps directly define the productivity index of a well. By allowing flexible expressions as input, workflows such as calibration to testing data and others can be streamlined.

Global well connection modification for local grid models in ECLIPSE 300™ reservoir simulation software

Where a well has connections in both the global and local grid, and the wellhead is in a local grid, it is now possible to use global grid keywords such as WPIMULT, CPIFACT, WELOPEN and CSKIN to modify individual connections in the global grid.

New and improved functionality for both ECLIPSE 100™ reservoir simulation software and ECLIPSE 300 software

• The supplied example datasets have been modified to generate INIT files, so that the results can be imported directly into Petrel™ subsurface software.
• Evaluation of cutbacks applied on the same timestep has been made more robust.

For ECLIPSE 100 software

• Improvements have been made to report the wellbore hydrostatic head correction, when using the averaged density method in a run containing vaporized oil in wet gas.
• Improvements have been made to calculate pressure drops in extended networks with GEFAC application.

For ECLIPSE 300 software

• End point scaling reporting and verification has been made more robust. The FILLEPS keyword now generates a complete set of endpoints for drainage and imbibition regardless of whether ENDSCALE is also specified. Use of water-based end point keywords, in a model without water, will now generate a warning. In thermal models, warnings for inconsistent end point values in rock-filled cells are now suppressed.
• Validation of vertical flow performance (VFP) tables specified in a BRANPROP keyword has been enhanced.
• PRT file reporting has been improved for tables specified in the RPTPROPS keyword. This includes K-value tables, which now use the component names as column headers, and options to improve the wrapping for wider tables.
• Reporting steam well rates for stopped and shut wells has received consistency improvements.
• Restart cases with generated solubility tables in versions prior to Eclipse 2023.2 are now identified, to ensure consistency of the solubility model in place and to avoid discontinuity in properties.

Learn more about the Eclipse reservoir simulator