One criterion for determining the precision of pressures calculated by a simulation model is the accuracy of the material balance. A high degree of precision in the calculated pressures is a necessary but not sufficient condition for elimination of significant errors in the prediction of fluid migration in the reservoir. A new procedure, called error matrix technique, has been developed for reduction of material balance errors. This reduction is accomplished by adjusting potential gradients at every grid point in the simulation model so that the material balance is accurately maintained. Performance of a hypothetical oil reservoir was simulated both by conventional methods and by the error matrix technique. The new technique was found to be more accurate than the conventional simulation.
A. R. Merchant et al., "A Technique For Improving Material Balance Accuracy In Reservoir Simulation Models," Society of Petroleum Engineers - Fall Meeting of the Society of Petroleum Engineers of AIME, FM 1973, Society of Petroleum Engineers, Jan 1973.
The definitive version is available at https://doi.org/10.2523/4548-ms
Geosciences and Geological and Petroleum Engineering
International Standard Book Number (ISBN)
Article - Conference proceedings
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01 Jan 1973