RESERVOIR 3D - SLICING OF ALAM EL-BUEIB PAY ZONES IN TUT OIL FIELD, NORTH WESTERN DESERT, EGYPT

Document Type : Original Article

Authors

1 Zagazig University, Faculty of science, Geology Dept.

2 Mansoura University, Damietta Faculty of Science, Geology Dept

Abstract

Alam El-Bueib Formation in Tut Oil Field is repesented by a high heterogeneous and multilayer reservoir. It is subdivided into six lithologic units starting by AEB-1 at the top and ending with AEB-6 at the bottom. Intensive well-log analysis of Alam El-Bueib in Tut Oil Field is analyzed, using Loganal program. Seven log–derived reservoir parameters are calculated for the six pay zones of Alam El-Bueib Formation in ten wells in this Tut Oil Field. The evaluated reservoir parameters are net pay thickness, total porosity, effective porosity, shale volume, water saturation, bulk pore volume and oil in place. The total porosity ranges from 10 % to 30 %, while the effective porosity ranges from 9 % to 29 %. The shale volume of Alam El-Bueib pay zones varies from 7 % to 19 % with depth, while the water saturation varies from 35 % to 70 %. The net pay thickness of the studied zones increases with depth from 150 to 700 ft. The bulk pore volume changes from 10 ft. to 270 ft., while the oil in place indicator changes from 5 ft. to 115 ft. with depth. The 3D-slicing of Alam El-Bueib reservoir model is constructed, using an inverse distance to power algorithm. It offers a clear insight and improves the visualization of the spatial distribution of the studied reservoir parameters in 3D. The visualization approach of Alam El-Bueib reservoir in 3D is improving the identification of promising areas for re-development and plan strategies for optimizing Alam El-Bueib reservoir production.

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