New Software Release

ECLIPSE 2019.1 Now Available

Thursday, 04 July 2019

Product overview

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

Release updates


  • Improvement to brine modeling with more accuracy when its density changes with salinity (using the BDENSITY and PVTWSALT keywords) in compositional simulation. A new formulation is implemented that uses the current salt concentration to calculate brine properties, such as density and viscosity, at wells instead of the reference salt concentration from PVTWSALT.

Workflow and usability

  • Extends the non-neighbor connection (NNC) workflow for flexible restart cases (RESTART keyword) for black oil simulations. NNC transmissibilities are recomputed from all the information in the dataset including transmissibility multipliers in the SCHEDULE section before the restart date.
  • Improves the performance of processing EDITNNC keyword for compositional simulations.
  • Provides a flexible way to edit grid properties for modeling coal-bed methane (CBM) SOLUTION Keywords Handling. A number of CBM-related SOLUTION keywords can be edited using operation keywords such as ADD, EQUALREG, MULTIREG, and OPERATER, etc. The CBM keywords are the initial coal gas concentration (GASCONC), saturated coal gas concentration (GASSATC), initial coal solvent concentration (SOLVCONC), and the solvent fraction in the gas phase (SOLVFRAC).



Reservoir engineers involved in production forecasting, reserves estimation, field development planning, or reservoir management.


Geoscientists and reservoir engineers performing geological model screening and ranking or pattern flood management.