Core analysis results of 494 core samples and log analysis in eight wells are used to evaluate the petrophysical properties of the Paleozoic reservoirs in October Oil Field. Statistical analysis and cumulative frequency of porosity and permeability reflected the high storage capacity and heterogeneity of Paleozoic reservoirs. Special core analysis of the Paleozoic reservoirs identified the cementation factor and saturation exponent which are used in well log analysis.
Well log analysis of the Paleozoic reservoirs in the study wells passed through, digitizing of well logs using scanner and Grapher program, editing data base and environmental corrections for the studied logs, then normalizing the logs in order to reduce the probability of major errors and inconsistencies in log analysis results. The results of log analysis are illustrated vertically by lithosaturation analog and laterally by reservoir isoparametric maps. The findings are useful to isolate zones for possible testing and indicated the northwest and south directions as candidates for future field development