Fractures analysis of the Asmari formation in the Kupal oil field (Dezful embayment, SW Iran)

The Kupal oil anticline is one of the most important structures in Dezful embayment that is located in northeast of the Ahvaz city and north of the Marun oil field. Recent deposits and Lahbari member of the Aghajari formation have formed the surface outcrops, and the Asmari formation with 7 reservoir layers is the main reservoir rock in this oil field. In this research fractures of the Asmari formation in this anticline have been analyzed based on well data, subsurface maps and seismic profiles. The Kupal oil anticline is a fault-related (detachment fold) and asymmetric fold, in which the middle parts have been distinguished as potential zones of of dense fractures development due to longitudinal curvature. The southwest limb in much parts and northeast limb in middle parts indicate zones with high fracture density, and the axial bending of the Kupal anticline is a result of movement of deep faults.