Journal of Mineral and Material Science
[ ISSN : 2833-3616 ]
A Practical TDS-Based Methodology for Interference Test Interpretation: A Unified Normalization Framework for Composite Reservoirs
Universidad Surcolombiana, Petroleum Engineering Department, Colombia
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Abstract
This work applies Tiab’s Direct Synthesis (TDS) methodology to the interpretation of interference tests in composite reservoirs. By normalizing pressure and pressure-derivative curves with respect to mobility ratio (λ), diffusivity ratio (η), interwell spacing (r), and discontinuity radius (R), a unique intersection point was identified in log-log coordinates. From this point, a practical expression was formulated to estimate the discontinuity radius without resorting to conventional type-curve matching. The methodology was validated through synthetic examples, showing that the proposed approach provides reliable estimates of reservoir parameters with errors below 15%, thus offering a robust and simplified alternative for characterizing composite systems in pressure transient analysis.