GLJ has conducted a variety of full field three-dimensional reservoir simulation studies to assist with the selection of well drilling locations, optimization of enhanced oil recovery schemes, understanding reservoir depletion mechanisms, determination of reservoir fluid migration and analysis of gas storage operations. The GeoSciences group develops geological models for use in reservoir simulation studies. The simulation software package used in-house is TERASIM, a package of advanced reservoir simulation software that performs black oil, compositional or thermal simulation.
Well test analyses for complex, high-impact wells in areas such as the Alberta Foothills, Frontier and International regions are conducted using SIMTRAN, a sophisticated pressure transient analysis program that uses three-dimensional reservoir simulation to generate numerical solutions. Unlike other programs based on analytical solutions, SIMTRAN rigorously handles multiphase flow and other reservoir complexities. History matching of the complete flow and buildup period assists with the development of an accurate reservoir description and improves confidence in the reserves determination and production forecasts.
Results from SIMTRAN and TERASIM are displayed graphically for ease of interpretation using the interactive post-processing program TERAPRO. These simulation software packages were developed by the former Simtech Consulting Group, but are now owned by Duke Engineering & Services Inc. and are fully compatible with all of the most widely used reservoir simulation packages, including Eclipse.
GLJ also uses Saphir, an analytical pressure transient analysis program for standard well test analysis and to quickly assess a variety of reservoir geometries and parameters for input into the more sophisticated SIMTRAN software package. Saphir also has a two-dimensional numerical simulation module for more advanced well test analysis.
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