Permeability Evaluation of the Permian-Triassic Successions in the Central Persian Gulf Area Based on Petrophysical and Sedimentological Data

Permeability is one of the most important reservoir parameters which is very critical in the prediction and evaluation of production rate and detecting more productive reservoir intervals. This parameter is mainly measured directly from core samples. In the wells without any recovered core, in order to predict permeability, various methods are presented based on available data sets. In this study, on the basis of two different approaches, the permeability characteristics of the Upper Dalan and Lower Kangan successions are evaluated both qualitatively and quantitatively. Also, the applicability of these methods is examined. For quantitative prediction, the well-known Lucia classification scheme (1995) was evaluated and then revised based on the additional parameters, which led to more clarified petrophysical classes. Finally, the results showed that the trends of the permeability changes in the Permian-Triassic intervals were comparable with the measured values and these methods were usable in the studied intervals.