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Discretisation Techniques for Multiphase Flow
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, Mathematics in Oil Production, Jul 1987, cp-235-00010
Abstract
The spatial discretisation of finite difference numerical reservoir simulation is reviewed with reference to both areal and vertical description of the reservoir. The complexities of several special fluid flow environments are compared with the standard approach and new discretisation techniques suggested. Actual examples are used to illustrate more complex discretisations and realistic simulation of fluid flow. During the 1960’s, the availability of high speed digital computers permitted the development of the first practical numerical petroleum reservoir models (1,2,3). During this decade, reservoir models increased in complexity so that a large model numbered some hundreds of space points over which the equations were evaluated. The initial techniques used, in terms of finite difference formulation and solution of linearised equations, were far less sophisticated than at the present time.