Characterization of a heterogeneous carbonate reservoir by integrating electrofacies and hydraulic flow units: a case study of Kangan gas field, Zagros basin

Abstract Reservoir characterization is one of the key stages in oil and gas exploration, appraisal, development, optimal production. During exploration phase, core analysis well logging are basic information obtained after pay zone identification. This study aims to integrate concept electrofacies (EFs) with hydraulic flow units (HFUs) effectively characterize Permo–Triassic carbonate formations at Kangan giant field southwestern Iran. For this purpose, log data collected from 10 drilled wellbores 490 have been analyzed based on similar clusters statistical features which rock-type approaches were used order petrophysical facies. In particular, we a multi-resolution graph-based clustering (MRGC) method determine EFs probability plot method, histogram analysis, reservoir quality index versus normalized porosity identify HFUs. Based data, five six HFUs identified. To establish good connection between zones, wells’ cross sections compare lithology, production potential each zone, rock type, amount shale eventually adapt facies best zone. The main difference work other studies literature adopting systematic approach integrating geology (via analysis) engineering examination HFUs) accurately hydrocarbon-bearing formations. results help rapid cost-effective by combining HFU available routine all oil/gas fields. This, turn, assists developing field, using more appropriate EOR scenarios, even locating proper perforation sites.