Cellular Vortex Element Modeling Of Multiphase Fluid Flow In Fractured Homogenous 3-D Oil Reservoir
Journal Title: American journal of Engineering Research - Year 2017, Vol 6, Issue 9
Abstract
Implementation of numerical schemes like finite element, finite volume and finite difference methods in the analysis of subsurface fractured porous media (e.g. oil reservoir) are characterized by grid based solutions and several computer iterations thereby promoting large computer memory usage. Cellular vortex method has relative advantages of avoiding iterations and also providing solutions to moving grids, hence the application of cellular vortex element method to investigate multiphase fluids flow in fractured homogenous oil reservoir. Numerical models for multiphase fluids flow in oil reservoir were developed by the combination of mass conservation principle, Darcy’s flow equation, channel-flow theory, equation of state, and continuity equation. Fortran computer program was developed for vorticity equations using convectional algorithms to investigate conditions of reservoir fluids during continuous withdrawals of 0.46×10-15 m 3 /s (250 bb/d), 0.92×10- 15 m 3 /s (500 bb/d),1.84×10-15 m 3 /s (1,000 bb/d), 2.30×10-15 m 3 /s (1,250 bb/d), and 2.76×10-15 m 3 /s (1,500 bb/d) for 365 days by gravity drainage from a vertical well bore of diameter 0.0762m in a reservoir of dimensions 100×100×225m. For the withdrawals, the mean oil saturations were 0.99±0.01, 0.73±0.19, 0.55±0.05, 0.32 ± 0.038 and 0.01±0.01, while the corresponding mean gas saturations were 0.01±0.02, 0.27 ± 0.09, 0.45± 0.01, 0.6 ±0.04 and 0.99±0.01.Decreasing trends in the oil saturations and corresponding increase in gas saturations were evident.
Authors and Affiliations
Oyetunde Adeoye Adeaga1 ,, Ademola Adebukola Dare2
Keywords
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