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MOVER
Multiphase Organic Vacuum Enhanced Recovery Simulator

MOVER is an areal three phase (water, oil and gas) finite element model. Currently the most advanced model of its kind, MOVER can be used to model flow of water, oil and gas, and optimize the recovery of LNAPL and water by minimizing NAPL entrapment in the saturated/unsaturated zones. A submodel of MOVER can be used to simulate coupled flow of water and LNAPL with a static atmospheric gas phase. MOVER simulates heterogeneous, anisotropic porous media or fractured mediaIt allows use of isoparametric elements to accurately represent material and physical/hydraulic boundaries. MOVER can be used to design NAPL recovery and hydraulic containment systems under complex hydrogeological conditions.

In a conventional free phase recovery system (with static gas phase), oil is trapped in the unsaturated zone when the air-oil table falls and oil is trapped in the saturated zone if the oil-water table rises. In a poorly planned recovery system 70 percent of the NAPL may be trapped due to fluid tables fluctuations within the cone of depression, or in areas beyond the radius of influence, if the free phase plume is not contained. Vacuum enhanced recovery increases gradients in water and oil potentials with minimal fluctuations in the fluid tables. Thus, VER (vacuum enhanced recovery or bio-slurping) helps to reduce volume of residual product and enhance free product recovery.

MOVER from Resources & Systems International, Inc., allows:
*Initial conditions and free oil volume are estimated internally from the monitoring well fluid level data.
*Rectangular 2-D isoparametric quadrilateral elements to accurately model irregular domain and material boundaries, hydraulic, and physical boundaries.
*Vacuum enhanced recovery (bioslurping) of NAPL and water phases are simulated.
*Oil and water recovery rates without vacuum are computed.
*Areal distribution of residual hydrocarbon is computed and used to estimate transient contaminant loading to groundwater.
*Interactive finite element mesh generator: rectangular/isoparametric quadrilateral mesh.
*Spatially variable water recharge, injection or LNAPL leakage.
*Model multiple pumping and/or injection wells.
*Model specified head and flux conditions.
*Simulate fractured media or granular porous media.
copyright 2000, Resources & Systems International, Inc.