ECLIPSE reservoir simulators have been the benchmark for commercial reservoir simulation for over 25 years because of their breadth of capabilities, parallel scalability, utility computing, and unmatched platform coverage.
Black-Oil Simulation
The black-oil model assumes that the reservoir fluids consist of three components (water, oil, and gas) in a three-phase system (liquid, gas, and gas in solution), with components miscible in all proportions. Four components can also be considered for modeling reservoir recovery mechanisms when injected fluids are miscible with hydrocarbons in the reservoir.
Compositional Simulation
The ECLIPSE compositional simulator is useful when an equation of state is required to describe reservoir fluid phase behavior or the compositional changes associated with depth. A compositional model is the right choice for studying condensates or volatile crude oils, gas injection programs, and secondary recovery studies. Knowledge of compositional behavior is also required for accurate planning and design of surface production facilities. Compositional simulation is ideally suited for
- gas injection (due to gas stripping)
- miscible flooding (as the injection gas goes into solution with oil)
- carbon dioxide flooding, with the gas soluble in both oil and water
- thick reservoirs with a compositional gradient due to gravity
- reservoirs with fluid compositions near the bubblepoint
- high-pressure, high-temperature reservoirs
- natural-fracture reservoir modeling.
Because of high fluid densities and viscosities,and the complicated physics involved when massive changes take place in reservoir temperature and calorific energy, advanced thermal recovery methods are typically required for heavy oil, extra heavy oil, and bitumen reservoirs.
Streamline

FrontSim is a three-phase, 3D simulator that models multiphase fluid flow along streamlines. FrontSim allows you to visualize fluid flow in the reservoir. This offers more information than finite difference simulators on key reservoir problems like model ranking and upscaling, water flood management and history matching.
Add-On Options
By selecting from the wide range of add-on options, you can tailor an ECLIPSE reservoir simulation solution to your project to enhance the scope of your simulation studies.
- Local Grid Refinement
- Gas Lift Optimization
- Gas Field Operations
- Gas Calorific Value-Based Control
- Geomechanics
- Coalbed Methane
- Networks
- Reservoir Coupling
- Flux Boundary
- Environmental Traces
- Pseudo-Compositional
- EOR Foam
- EOR Polymer
- EOR Solvent
- EOR Surfactant
- Wellbore Friction
- Multisegmented Wells
- Unencoded Gradients
- Parallel ECLIPSE
- Open-ECLIPSE Developer's Kit

