Simulation of Miscible Flow Including Bypassed Oil and Dispersion Control
| Autor: | L. Kent Thomas, Ray Gene Pierson, Keith H. Coats |
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| Rok vydání: | 2007 |
| Předmět: | |
| Zdroj: | SPE Reservoir Evaluation & Engineering. 10:500-507 |
| ISSN: | 1930-0212 1094-6470 |
| DOI: | 10.2118/90898-pa |
| Popis: | Summary This paper describes methods for the simulation of first-contact miscible (FCM), multicontact miscible, and vaporizing gas drive, which include logic to account for bypassed oil. Dispersion control is included for FCM cases. First-contact miscibility may be simulated in fully compositional mode with any number of components, Nc, or in two-pseudocomponent equation-of-state (EOS) mode. Pseudoization is performed internally in the model so that hydrocarbon-fluid density and viscosity, as functions of pressure and composition, are the same as calculated in Nc-component mode. Bypassed oil and dispersion control are based on an extension of Koval's (1963) method. This procedure allows the user to adjust the fractional flow of oil during upscaling or history matching to match fine-grid or historical results. This feature can be used to simulate both water-alternating-gas (WAG) and tertiary-recovery projects where solvent injection is preceded by a water-injection period. Example cases are included to illustrate the techniques presented in this paper. Results are also given on the efficiencies of the algorithms. |
| Databáze: | OpenAIRE |
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