Reservoir Performance Templates
Material balance, aquifer influx and pressure transient interpretation.
22 blueprints
Gas Material Balance
p/z depletion analysis for gas reservoirs.
3 blueprintsOil Material Balance
Havlena-Odeh straight lines, expansion terms, underground withdrawal, drive indices and effective compressibility.
5 blueprintsAquifer Models
Pot, Schilthuis, Fetkovich and Van Everdingen-Hurst water influx.
3 blueprintsTransient Well Pressure
Wellbore pressure response during transient flow.
8 blueprintsDimensionless Conversions
Conversions to and from dimensionless time, pressure and radius.
1 blueprintDST Sequence Analysis — Horner Interpretation
Standard four-period drill stem test analysis: Initial Flow (IF) → Initial Shut-In (ISI) → Final Flow (FF) → Final Shut-In (FSI). Forward model generates synthetic gauge data using PO.PTA.Pw.VW with built-in superposition across all rate changes. Horner analysis of the FSI buildup extracts permeability, skin, and extrapolated pressure P*. Cross-checks ISIP against Horner P* as an independent reservoir pressure estimate.
Multi-Rate Drawdown — Step-Rate Test
Step-rate drawdown test with three rate periods. Demonstrates PO's built-in superposition via the `prod_data` array parameter — a single PO.PTA.Pw.VW call handles the full rate history. Uses rate-normalized pressure ΔP/q for interpretation, which removes rate dependence and allows permeability and skin extraction from any single rate period.