A Symmetric, Positive Definite Formulation of a Three-Dimensional Micellar/Polymer Simulator

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Abstract
Summary: An efficient approach to compositional simulation is described. Application to micellar/polymer flooding resulted in a significant saving in computation time. A new method was developed to impose precisely the outflow boundary condition arising from continuity of flux across the reservoir/wellbore interface. In a manner analogous to classic well models, the above condition was used to define produced concentrations from the wellblock concentrations. Effects of numerical dispersion in multidimensional, multiphase, multicomponent flow and the effectiveness of a dispersion control scheme are also discussed.

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