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Mini Review Volume 8 Issue 1
Tiab’s direct synthesis (TDS) technique: a perspective on its maturity and relevance in modern well test interpretation
Freddy Humberto Escobar
Universidad Surcolombiana, Petroleum Engineering Department, Colombia
Received: December 16, 2025 | Published: January 14, 2026
Citation: Escobar FH. Tiab’s direct synthesis (TDS) technique: a perspective on its maturity and relevance in modern well test interpretation. Int J Petrochem Sci Eng. 2026;8(1):8-10. DOI: 10.15406/ipcse.2026.08.00145
Abstract
Well test interpretation remains a fundamental discipline within reservoir engineering, providing critical insight into reservoir properties, flow regimes, and well–reservoir interactions. Although several interpretation methodologies are available, many continue to exhibit limitations related to subjectivity, ambiguity, and non-uniqueness of solutions. Tiab’s Direct Synthesis (TDS) technique, introduced in the early 1990s, was conceived as an analytical alternative grounded in pressure and pressure derivative diagnostics. Over more than three decades, TDS has evolved into a mature and versatile methodology applicable to fractured wells, horizontal and multifractured systems, naturally fractured reservoirs, unconventional formations, and composite systems. This paper presents a perspective on the conceptual foundations, general aspects, and enduring relevance of the TDS technique, emphasizing its role as a verification-oriented and physics-based approach for modern well test interpretation.
Keywords: TDS technique, well test interpretation, pressure derivative, flow regimes, perspective paper
©2026 Escobar. This is an open access article distributed under the terms of the, which permits unrestricted use, distribution, and build upon your work non-commercially.