Fractures Effect in Reservoir Quality of Ilam and Sarvak Formations in Hengam Oilfield Using Imaging Logs

Abstract

In this study, an attempt has been made through the data of one of exploratory wells as well as using petrophysical and FMI visual logs, the lithology, structures and failures of the field is investigated. For petro physical analysis of the area, after initial field investigation and controlling the drilled units, final approximation of the lithology of the area was made. Afterwards the raw data of well was used for the evaluation of petrophysical parameters by Geolog software. In the next step the effect of fractures on the oil production and their comparison with the initial porosity was analyzed. The results showed that the points with highest production and exploitation of the oil exists, have the greatest expansion of fractures. Comparison of the obtained results with the lithology specifications of other wells of the field shows that in zones with secondary fractures relative to the porosity the reservoir quality has been more appropriate and outputs the highest production and in comparison, the wells No.3, 4 and 5 in spite of having zones of higher porosity than the well number 2 of the lower reservoir quality.