Pattern Lab

New Software Release

ECLIPSE 2022.4 Now Available

Friday, 16 December 2022

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 ECLIPSE simulator covers the entire spectrum of reservoir modeling, including black-oil, compositional, thermal, and streamline simulation. 

Learn more about ECLIPSE

Release highlights

The ECLIPSE 2022.4 release includes key developments that extend modeling capabilities for user-defined arguments in field management, improve performance and reporting of thermal CO2 storage models, and enhance the performance, usability, and functionality of the simulator suite.

Release updates

New user-defined argument (UDA) facilities
The following keywords include new items made available for definition as user-defined arguments:


  • WCONPROD(13) wet gas production rate target or upper limit
  • WCONPROD(14) total molar rate target or upper limit
  • WCONPROD(18) calorific rate target or upper limit
  • WELTARG(3) calorific production rate (when item 2 is set to CVAL).


  • WVFPDP(2) pressure adjustment to be added to the well’s BHP
  • DELAYACT(3) delay after which this action will be triggered.

CO2 storage (ECLIPSE 300)

This workflow now includes several enhancements:

  • Aqueous component enthalpy is now reported to the PRT file (and DBG file if requested for CO2) in the same way as oil and gas enthalpy.
  • Enthalpy for aqueous solids is now reported to the PRT file in the same way as for nonaqueous solids.
  • The algorithm for calculating enthalpy is now optimized to improve run time.
  • For GASWAT and nonthermal CO2STORE cases, summary vector output has been corrected for several water component region and field quantities, which previously always reported zero.
  • An issue was fixed that could lead to the IMPNOMFD method of CO2 enthalpy having a small dependency on mole fraction.
  • The documentation for aqueous speciation has been clarified and improved.

For both ECLIPSE 100 and ECLIPSE 300 simulators

  • The segment strength output to the RFT file now matches the SSTR summary vector values.

For ECLIPSE 100 simulator

  • An issue that could cause run failure when using the SCDETAB keyword has been fixed.

For ECLIPSE 300 simulator

  • An issue that could cause timesteps to be unnecessarily short when using the DELAYACT keyword has been fixed.
  • An issue that could cause the thermal cutback behavior to be slightly different if a user defined argument (UDA) was used in the WCONPROD keyword has been fixed.
  • Data checking for the FIELDSEP and FIPSEP keywords has been improved.
  • Checking and documentation for the WELLSTRW keyword has been improved.