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Petrophysical evaluation is one of the important stages in petroleum exploration activities and reservoir analysis. When a log is missing in a drilling well, petrophysiests hope to deduce it from other logs available in another part of the well or in neighboring wells, in order to define true petrophysic evaluation for corresponding well. This paper presented here, is an artificial neural networks (ANNs) modeling in one of the carbonate reservoirs in the south west of Iran. In this study, three separate ANN are ap...

The Siah Bishe Pumped Storage Dam is located in the northern part of the Alborz mountain range. The investigation results and the effect of brittle deformation of two fault sets in the left pressure shaft of Siah Bisheh Dam are discussed in this paper. The shaft is arranged in sedimentary and volcanic rocks of Triasic and Jurasic ages. The length of the shaft is 450m and its diameter is 6m with 65 degree inclination relatively south-north trend. The results of geo-engineering surveys using boreholes and statistica...