International Journal of
eISSN: 2475-5559
Submit manuscript...
Research Article Volume 7 Issue 1
A TDS-based approach for direct interpretation of pressure transients and fractal parameter estimation in single-porosity fractal naturally fractured reservoirs
Paula Sofia Sanmiguel, Freddy Humberto Escobar, Rodolfo Gabriel Camacho, Juan Pablo Salazar
Universidad Surcolombiana, Petroleum Engineering Department, Colombia
Universidad Nacional Autónoma de Mexico, Petroleum Engineering Department, Colombia
Received: November 21, 2025 | Published: December 9, 2025
Citation: Sanmiguel PS, Escobar FH, Camacho RG, et al. A TDS-based approach for direct interpretation of pressure transients and fractal parameter estimation in single-porosity fractal naturally fractured reservoirs. Int J Petrochem Sci Eng. 2025;7(1):44-51. DOI: 10.15406/ipcse.2025.07.00143
Abstract
This study presents an analytical method for characterizing naturally fractured, fractal reservoirs as single-porosity systems using the Tiab Direct Synthesis (TDS) technique. By examining specific patterns in log–log plots of pressure and pressure derivative, such as convexity minima, slope changes, and spherical-flow behavior, direct correlations were developed to estimate the fractal dimensions ( , ) and fracture connectivity indices ( , ). Synthetic pressure transient responses were created by varying key parameters of a fractal reservoir model, illustrating how geometrical and connectivity properties affect flow regimes. Normalization procedures were used to unify unique derivative behaviors, enabling the derivation of explicit analytical formulas for parameter estimation without relying on type-curve matching. The correlations proposed were validated with synthetic examples, showing good agreement with model inputs and confirming the method's robustness. These findings indicate that the TDS technique, when adapted for fractal reservoirs, offers a quick and reliable tool for pressure-test interpretation in heterogeneous systems.
Keywords: fractal reservoirs, technique, well test analysis, pressure transient, single-porosity reservoirs
©2025 Sanmiguel, et al. This is an open access article distributed under the terms of the, which permits unrestricted use, distribution, and build upon your work non-commercially.