RADIOACTIVITY AND RESERVOIR CHARACTERISTICS OF LOWER MIOCENE ROCKS IN BELAYIM MARINE OIL FIELD GULF OF SUEZ,EGYPT

This thesis aimed to studying the radioactive characteristics and evaluates the reservoir properties of the Lower Miocene rocks in Belayim marine oil field, Gulf of Suez, Egypt. The available data include gamma ray spectrometric data of the Lower Miocene The gamma ray spectrometric data were used to determine the oil bearing zones, to define the clay type minerals and also to differentiate between the radioactive elements in the shale content which effected directly in the porosity values and oil accumulaPetrophysical studies on the reservoir rocks play an important role in the discovery, evaluation and distribution of the productive zones. The petrophysical properties of rock depend mainly on depositional environment, mineralogy, geology and pore space fDigitizing, gathering well log data and applying environmental corrections are important to good log analysis. Multiwell normalization is necessary to ensure that the results are accurate, consistent and comparative from well to well, by using histograms.Plotting the reservoir characteristics in the form of 3D gives a clear picture about the reservoir in the study area hence it is able to understanding and imaging the distribution of reservoir parameters in all parts in the Rudeis Formation in the study aFrom the statistical analysis of the porosity and permeability in the core samples, it is concluded that the lower Miocene Formations are a good reservoirs. Studying the capillary pressure method play an important role in determination the irreducible watIntegrating the available gamma ray spectrometric data and other conventional well logs data in addition the core analysis data are used to ensuring the thorium normalization method and studying the effect of the clay mineral type to the pore geometry and