EVALUATION OF ASMARI RESERVOIR PROPERTIES VIA PETROPHYSICAL LOGS IN MANSOUR-ABAD OIL FIELD, SW OF IRAN.

Determining petrophysical parameters and reservoir evaluation has special importance in the oil industry. The precise knowledge of these parameters allows the petroleum engineers to have the tools they need in a given field to study precisely the production stages and, with their knowledge, will be more capable of developing oilfields. In this study, two wells in Asmari reservoir in Mansour Abad oil field has been investigated, and reservoir properties such as porosity, shale volume, and water saturation have been calculated, and the volume of water and oi l have been determined. All calculations, cross-plots, and logs diagrams are done via software Geolog version 6.7.1. Studies show that the Asmari Formation in this field has a low average shale volume. On the other hand, Asmari reservoir has good porosity, especially in the upper part (Zone 3), and porosity variations of the field are not high. Also, the use of the M-N plot indicates the prevalence of carbonate lithology. In addition, based on Thorium-Potassium cross-plots, the dominant clay minerals were identified as Illite and mixed layer. [ABSTRACT FROM AUTHOR]