Calculation of water influx for bottom-water drive reservoirs
Most petroleum reservoirs are in contact with aquifers that provide pressure support through water influx. Thus, the prediction of reservoir behavior in this case requires an accurate aquifer model. Based on flow geometry, reservoir-aquifer systems are commonly classified as either edge-water or bottom-water drive. For edge-water drive, the most thorough aquifer influx model developed to date is that of van Everdingen and Hurst. This model is essentially a solution to the radial diffusivity equation. Although the assumptions made in deriving this model are not strictly valid for bottom-water drive, water influx for this drive mechanism can sometimes be approximated by radial flow. Therefore, for lack of a better model, it has been a common practice to apply the method of van Everdingen and Hurst to both bottom-water and edge-water systems. Coats has developed a model that takes into account vertical flow effects, and has shown these effects to be quite substantial. However, the model, as presented, has two principal limitations. First, the solution
- Research Organization:
- Gulf Canada Resources Inc.
- OSTI ID:
- 6324951
- Report Number(s):
- CONF-8409104-
- Journal Information:
- Soc. Pet. Eng. AIME, Pap.; (United States), Journal Name: Soc. Pet. Eng. AIME, Pap.; (United States) Vol. SPE13170; ISSN SEAPA
- Country of Publication:
- United States
- Language:
- English
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