Pressure Transient Analysis (PTA) is a powerful tool for reservoir characterization — and it can tell you far more than permeability, reservoir contact, and skin factor. But to unlock its advanced capabilities, the analyst needs a solid grasp of the diagnostic features of pressure and derivative responses: how they relate to flow regimes, and how the static and dynamic features of a reservoir generate those regimes at different stages of depletion. Without that context, history matching pressure responses or fitting straight lines to portions of the data may return parameter estimates while missing the bigger picture entirely.


This webinar makes the case for PTA as a reservoir characterization tool, shows its proper and improper use through worked examples, and highlights just how underused it remains in practice.


Slides & Material — Copyright: All content in this session is copyrighted by Prof. Erdal Ozkan. Access to the recording and slides is provided exclusively through this platform. Any unauthorized use, reproduction, or distribution outside the portal is strictly prohibited and may result in legal action under applicable laws.


Recordings and certificates will be issued within one business day of the event.

Webinar Objectives

By the end of this session, participants will be able to:


Understand PTA as a reservoir characterization tool, not just a permeability/skin estimator


Recognize why flow regime identification is central to correct interpretation


Relate diagnostic signatures in the pressure derivative to real reservoir features


Account for nonuniqueness, bias, and the common traps that lead to misinterpretation


See the full power of PTA demonstrated through practical examples

About the Presenter

Prof. Erdal Ozkan is a Professor of Petroleum Engineering at the Colorado School of Mines and Director of the Unconventional Reservoir Engineering Project (UREP). His expertise spans reservoir engineering, fluid flow in porous media, PTA/RTA, and unconventional reservoirs.


A Distinguished Member of SPE, he has received the Lester C. Uren Award, the Formation Evaluation Award, and the Rocky Mountain North America Reservoir Description and Dynamics Award. He has served as Technical Director for Reservoir on the SPE International Board of Directors, Co-Executive Editor of SPE Reservoir Evaluation & Engineering (SPEREE), and Chief Editor of the Journal of Petroleum Science and Engineering. He was named an SPE Distinguished Lecturer in both 2011 and 2025, and has authored over 180 technical papers, one book, and several book chapters.

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Date : 09/10/2026 - 09/10/2026
Time : 9 AM MST | Duration : 60 Minutes
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