Evaluation of the role of structures in the distribution of hydrocarbons in Sarvak and Ilam Formations using fuzzy logic in the Bandar Abbas hinterland

The Sarvak and Ilam Formations in the Zagros sedimentary basin are known as hydrocarbon reservoir formations. More than half of the hydrocarbon fields in the Zagros Basin on the Sarvak and Ilam horizons contain hydrocarbons. In this research, to identify areas with hydrocarbon potential of the horizon of Sarvak and Ilam at Bandar Abbas hinterland, parameters such as outcrops of formations, main faults, salt plugs, isopach maps and upper sediment volume of formations from the geological map of the region and well data were extracted. With designing a network inference among data and using Fuzzy logic method with the high hydrocarbons, potential of the Sarvak and Ilam horizons were identified in the Bandar Abass hinterland. This area identified as a relatively weak area in terms of exploratory potential in Sarvak and Ilam reservoir horizons. 68% of the hinterland region has low hydrocarbon potential, 18% has medium hydrocarbon potential and only 14% has high hydrocarbon potential for exploration in Sarvak and Ilam horizons. However, considering the effect of anticlines, the mentioned percentages for areas with high hydrocarbon potential reduced to 4.3%. Together, it seems that the anticlines of South Gashu, Bastaneh, Kisn, West Namak and Suru have hydrocarbon potential in Sarvak and Ilam horizons.