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Comparison of alternating-direction and successive overrelaxation techniques in simulation of two- and three-dimensional, two-phase flow in reservoirs

Conference ·
OSTI ID:6172243
This study was performed to compare the capability and computing efficiency of successive overrelaxation (SOR) and alternating-direction (ADI) techniques in simulating pressure maintenance by water and gas injection. The calculations simulated 2- and 3-dimensional, incompressible, 2-phase flow and accounted for effects of capillary pressure, relative permeability, gravity and reservoir heterogeneity. The 2 techniques investigated were applied to the iterative, simultaneous solution of the 2 flow equations. Several variations of the SOR method were used: point (PSOR), point symmetric (PSSOR), line (LSOR), and line symmetric (LSSOR). In this work the SOR methods were extended and applied to the simultaneous solution of a set of partial difference equations as opposed to the single- equation problem treated in the literature. (13 refs.)
OSTI ID:
6172243
Country of Publication:
United States
Language:
English