Discrete fracture modeling by integrating image logs, seismic attributes, and production data: a case study from Ilam and Sarvak Formations, Danan Oilfield, southwest of Iran

Abstract Understanding the fracture patterns of hydrocarbon reservoirs is vital in Zagros area southwest Iran as they are strongly affected by collision Arabian and Iranian plates. It essential to evaluate both primary secondary (fracture) porosity permeability understand fluid dynamics reservoirs. In this study, we adopted an integrated workflow assess influence various sets on heterogeneous carbonate reservoir rocks Cenomanian–Santonian Bangestan group, including Ilam upper Sarvak Formations. For purpose, a combination field data was used seismic data, core open-hole well-logs, petrophysical interpretations, dynamic data. FMI interpretation revealed that substantial amount exists The interval 1-2 (3491 m 3510 m), 1-3 (3530 3550 base 2-1 most fractured intervals formation. dominant stress regime study compressional strike-slip system featuring reverse faults with NW–SE orientation. From depositional setting point view, mid-ramp inner-ramp show higher concentration fractures compared open marine environment. Fracture modeled iteratively establish realistic match production log results indicate has significant productivity wells area.