Investigation of Petrophysical Parameters of Upper Sarvak Formation in One of the Iran South Oilfields

In this study, the upper Sarvak’s petrophysical parameters have been investigated in two A and B wells in one of the oil field in southern Iran. Based on this assessment and the use of conventional cross plots (neutron-density, sonicneutron, MID_PLOT and M-N PLOT), lithology of upper Sarvak has been identified as a combination of limestone, dolomite and in small amounts, shale. With respect to calculated petrophysical properties and to more precise evaluation, the upper Sarvak in the studied area has been divided into 5 Zones. With respect to the specific petrophysical properties, zone S2 has been divided into 8 subdivisions. Finally, zone S2 with dominant lithology of limestone and with the lowest amount of shale in subdivision 2 and 3, have been recognized as the best reservoir parts.