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Multiscale Mixed Finite Element Modeling of Coupled Wellbore – Near Well Flow

Multiscale Mixed Finite Element Modeling of Coupled Wellbore – Near Well Flow

Kategori
Vitenskapelig foredrag
Sammendrag
An accurate well modeling capability is important for both production and reservoir engineering calculations. Ideally, the models used for these two applications should be related in a logical manner. Multiscale methods allow varying degrees of resolution and can therefore provide a natural linkage between production and reservoir models. In this work, we present a coupled wellbore-reservoir flow model that is based on a multiscale mixed finite element formulation for reservoir flow linked to a drift-flux wellbore flow representation. The model is able to capture efficiently the effects of near-well heterogeneity in the reservoir and phase holdup and pressure variation in the wellbore. The formulation presented here is for oil-water systems. The basic reservoir-wellbore linkage is described and validated through comparison to results from an existing simulator. The multiscale methodology is then applied to a heterogeneous reservoir model. Both vertical and deviated wells are considered. Comparisons of the multiscale solution to the fully resolved (fine-scale) solution demonstrate the high degree of accuracy of the method, for both reservoir and wellbore quantities, as well as its efficiency. 
Språk
Engelsk
Forfatter(e)
Institusjon(er)
  • SINTEF Digital / Mathematics and Cybernetics
Presentert på
SPE Reservoir Simulation Symposium 2007
Sted
Houston, Texas USA
Dato
28.02.2007
År