Decline Curve Calculator
Forecast production decline using exponential or hyperbolic models.
Inputs
bbl/day
%
years
Results
Final Rate
25.5 bbl/day
Cumulative Production
585,751 bbl
Total Decline94.9%
Average Rate160.4 bbl/day
Monthly Decline0.03
How to Use This Calculator
- Enter initial production rate (bbl/day) and annual nominal decline rate (%).
- Select decline type: exponential (conservative) or hyperbolic, and enter the hyperbolic b factor if applicable.
- Enter forecast period (years).
- Read EUR (estimated ultimate recovery) and production rate at end of forecast period.
- Compare exponential vs. hyperbolic forecasts to understand reserve uncertainty range.
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