Table 5 Comparison of dynamic reserves evaluation methods.
Method | Principle | Data Source and Conditions | Applicability | Relationship Between Single Well and Reservoir |
|---|---|---|---|---|
Empirical formula | Trend comparability | Production data, decreasing | Single well, gas reservoir | Single well superposition is equal to the dynamic reserves of gas reservoir |
Material balance method | Mass balance | Static pressure test, a certain degree of recovery | Gas pool | Dynamic reserves calculation of gas reservoir |
Modern production decline analysis method | Production data, boundary control flow | Single well, gas reservoir | Good connectivity, interference, single well superposition is greater than the gas reservoir dynamic reserves | |
Well test analysis | Pressure recovery test, production data | Single well, gas reservoir (numerical) | ||
Elastic 2 phase method | Filtration theory | Production data, pressure data | Individual well | There is superposition interference, and the single well superposition is greater than the dynamic reserves of gas reservoir |
Numerical simulation method | Geological model, production data | Gas pool | Dynamic reserves calculation of gas reservoir |
