New Software Release

Product overview

The ECLIPSE™ industry-reference reservoir simulator offers the 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 40 years due to its robust capabilities, speed, parallel scalability, and unmatched platform coverage. The simulator covers the entire spectrum of reservoir modeling, including black-oil, compositional, thermal, and streamline simulation. 

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Release highlights

The ECLIPSE 2023 release includes key developments that extend modeling capabilities for user-defined arguments in field management, that provide additional reporting for multi segment wells, and that bring improved performance, usability, and functionality to the simulator suite, including CO2STORE workflows.

Release updates

New user-defined argument (UDA) facilities

The following keywords include new items made available for definition as user-defined arguments in both ECLIPSE 100 and ECLIPSE 300 (unless otherwise noted):

GCONPROD – group production control

• Reservoir fluid volume production rate target or upper limit

GSATPROD – satellite group production control

• Oil production rate
• Water production rate
• Gas production rate
• Reservoir fluid volume production rate
• Mean calorific value of gas produced (ECLIPSE 100 only)

The use of expressions in these control methods allow, for instance, concise production decline curve type modeling.

Additionally, the alternative behavior for well and group quantities that can be specified by UDA in more than one keyword, previously available only in ECLIPSE 100, is now also available in ECLIPSE 300. Additional functionality has been added in both ECLIPSE 100 and ECLIPSE 300 for cases where a second keyword modifies a quantity rather than setting it directly.

Finally, UDA reporting has been improved to avoid situations where, if wildcards were used in a keyword, there was no confirmation that a particular UDA had been deactivated .

Improved reporting for multisegment wells

• Chord segment links for looped flow paths, as specified in the WSEGLINK keyword, are now output to the RFT file.
• In ECLIPSE 100, an issue has been resolved that caused some summary output to be missing when segment numbering was not continuous.
• In ECLIPSE 300, error checking has been improved in cases where WSEGDIMS dimensions were not large enough for the model, and where there was a mismatch between the usage of COMPDATL and COMPSEGL.

For both ECLIPSE 100 and ECLIPSE 300 simulators

• Restart runs using SKIPREST will now not terminate if an END keyword is encountered inside an ACTION family keyword while skipping.

For ECLIPSE 100 simulator

• The LGR name in the COMPDATL keyword can now be defaulted.
• Specifying the NONNC keyword for a dual porosity model now terminates cleanly with an error. 

For ECLIPSE 300 simulator

• Viscosity and density calculations have been improved for thermal models that use the CVTYPE, CGDTYPE, or CGVTYPE keywords to avoid the use of extreme critical temperatures. Reporting has also been improved.
• For CO2STORE models, the algorithm for THP-controlled well pressure calculations now avoids initial estimated pressures outside the validated Spycher-Pruess range, and the PRT output of Ezrokhi coefficients now supports very small values.
• An issue has been resolved that caused some parallel runs to fail with an internal error message about the MPI buffer being too small if a grid file was not requested.
• The WELLWAG keyword can now work for the MONTHS cycle type for large cycle values.
• Tracer cumulative connection summary vector output has been corrected for parallel runs.