Abstract

The increasing development of industry and the expansion of vital arteries in different parts of Iran requires that the situation of subsurface lineaments be seriously considered to identify hidden faults and analyze the risks arising from it. In the interpretation of aerial geophysical data in this study, mainly the evaluation of geological formations and their changes to explore minerals and oil has been considered. Therefore, in interpreting magnetic data, attention was paid to phenomena and complications, as well as methods that can help identify the desired anomalies. In this regard, preparing a magnetic field strength map was very useful and necessary. This map was taken based on raw geophysical data related to 2015 with the guidance of the tutor and was prepared using software analysis. Because rocks have different magnetizations, a magnetic difference map can provide excellent lithological distribution images. The total magnetic field strength data of each lithology unit have a specific magnetic response. Fault zones or zones that are fragmented generally show a low-intensity magnetic response due to the passage of water or fluids and weathering of magnetic minerals, the shape of these anomalies are usually visible as linear structures. The results of this study showed that the reservoir rock of this oil field has northwest to southeast extension and there is a possibility of faulting along the northeast to southwest in this reservoir. This faulting probably caused a discontinuity in the tank and this caused the gas injection not to increase the pressure and thus increase the harvest.