Case history, performance predictions of the Marg Tex oil reservoir using unsteady-state calculations--Sunshine Field, Louisiana
During the early stages of development of the Middle Marg tex (Margulina texana) oil zone in the Sunshine Field a rapid pressure decline was experienced. In order to forecast the future pressure behavior, unsteady state calculations using the method developed in 1949 by Hurst and van Everdingen were employed. The paper reviews the calculation method and its limitations--particularly before some performance data is available. Illustrated is the variations of the calculated water influx constant (required for the unsteady state calculations) at various times in the life of the reservoir. These data give an indication of the amount of performance history required to make a good pressure prediction. Also, the effect of higher and lower rates of production is shown. All the calculated pressures are compared with the actual measured pressure performance. The paper concludes that the unsteady state calculations are a useful and powerful tool for predicting performance of water drive reservoirs with large aquifers at various production rates.
- OSTI ID:
- 6431428
- Resource Relation:
- Conference: 41. annual SPE of AIME meeting, Dallas, TX, USA, 2 Oct 1966; Related Information: SPE 1496
- Country of Publication:
- United States
- Language:
- English
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