Framework Characteristics

1. Support 3D transient flow of multiphase with multicomponent
2. Multiple physical models
   • air/water, oil/water, three-phase, black-oil model ...
3. Multiple accurate and efficient numerical methods
   • IMPES, sequential, fully implicit
4. Discretization techniques
   • Cell-centered finite difference (black-oil, oil/water, air/water models)
   • Discontinuous Galerkin (two phase IMPES model)
   • Galerkin FEM (poroelastic model)
   • Multipoint flux MFE (single phase implicit model)
   • Mortar finite element
5. A suit of linear solvers and preconditioners
   • LSOR, Multigrid, Domain decomposition/Newton Krylov
6. Wells control
   • Arbitrary number of wells with one or more completion
   • Pressure and rate specified well control
7. General purpose 2D function utilities
   • Piecewise constant
   • Piecewise linear
   • Quadratic splines with optional poles
   • Cubic splines with optional poles
   • User defined functions
8. Free-form keyword input
9. Restart capability
10. Dynamic grid refinement of the primary grid on each fault bloc
11. Languages
    • FORTRAN 77 is used whenever possible for portability concern
    • Classical C is used for memory management and user interface
    • C++ is used for the multiblock interface libraries (MACE)