SOFTWARE

Multiflood Reservoir Simulator
MULTIFLOOD is a three-dimensional, finite difference-based, three-phase, seven-component, compositional petroleum reservoir simulator. Designed primarily for the study of carbon dioxide displacements, the simulator can be applied to high-pressure gas and LPG dry gas placements, compositional simulations, and conventional black oil studies.

Unique physical phenomena modelled:

• Loss of carbon dioxide through solubility in the aqueous phase.
• Water blocking of oil from contact by the invading solvent.
• Asphaltene dropout with associated reduction in phase mobility.
• Relative permeability hysteresis.

• Todd-Longstaff mixing parameter model to account for viscous fingering.
• Two-point upstream mobility discretization.
• Stabilized Runge-Kutta time discretization.
• Both direct and iterative linear equation solvers.

Multiflood details

VSTM
VSTM is a three-dimensional, finite difference-based, three-phase, four-component, thermal petroleum reservoir simulator for cyclic steam and steamflood analysis. It features:

• Fully implicit time discretization for maximum stability.
• Volatile hydrocarbon components soluble in aqueous phase.
• Isothermal model.
• Compaction option. When run in isothermal mode, this highly stable model makes possible the efficient study of single-well water and gas coning or cusping problems. For maximum efficiency, the model solves for only those variables needed in the user-specified mode. This means that isothermal simulations with only one volatile component (a conventional black oil simulation) will require less computation time than a thermal simulation with one or two volatile components.

VSTM details