The applications of streamtube techniques to full field waterflood simulations
A comparison between streamtube and finite-difference modeling for multiwell waterfloods is presented to show the utility of streamtubes as a reservoir modeling technique. The streamtube formulation follows most of the classical techniques presented in the literature. Areal sweep in the model is determined by streamtubes developed on the basis of unit mobility ratio and corrected for changing mobility ratio by the method of Martin and Wegner. Displacement in the streamtubes is calculated by a Welge construction with vertical heterogeneity represented by Dykstra-Parsons layering. This work differs from previous efforts in that the streamtube patterns are changed to reflect changes in well development and that wells are individually history matched by assignment of Dykstra-Parsons coefficients on a well-by-well basis. Two applications of the technique are described. The first is a comparison between finite-difference and streamtube model history match and prediction for a waterflood based on the Ninth SPE Comparative Solution Project. This application is designed to display the basis of the streamtube technique in the context of a standardized industry problem. The second application is for a recently completed study of the Kaybob North reservoir which shows model development and history matching of a 100+ well field with a 30-year history and a number of realignments.
- OSTI ID:
- 199476
- Report Number(s):
- CONF-951002--
- Country of Publication:
- United States
- Language:
- English
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