INTEGRATION OF CORE DATA AND WELL LOGS FOR RESERVOIR CHARACTERIZATION, FLOW UNITS EVALUATION AND PERMEABILITY ESTIMATION IN SHALY SAND RESERVOIRS, ONSHORE EAST NILE DELTA EGYPT | ||
| Journal of Egyptian Geophysical Society | ||
| Volume 17, Issue 1, 2019, Pages 71-84 PDF (2.77 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jegs.2019.402337 | ||
| Authors | ||
| S.E. MAHMOUD1; W.M. MABROUK1; M.A. WAZIRY2 | ||
| 1Department of Geophysics, Faculty of Science, Cairo University, Giza, 12613 Egypt | ||
| 2Dana Gas Company, 5th Settlement, New Cairo, Egypt | ||
| Abstract | ||
| The upper Messinian Abu Madi reservoir present a challenge in their effective gas and production in the onshore Nile Delta exploration, development and production, through recognition and understanding of the reservoir distributions and sand delineation during the exploration and development phase. The key to build reservoir model and define hydrocarbon potential through accurate prediction of reservoir properties and dynamic flow capacity by estimated porosity, water saturation and permeability. Estimation of reservoir characterization using core data and log data are primary process for identification of rock flow units, vertical and horizontal heterogeneities. Using core analysis reduces uncertainty in reservoir evaluation by providing data representative of reservoir at in-situ conditions to build a realistic reservoir model. Characterization of porosity and permeability of the reservoir is an important control on reservoir petrophysics and reservoir productivity. In the area of study the reservoir flow units identification and prediction of permeability became available from the integration between core and wireline logs data for selected wells covering Abu Madi reservoir. An inter-disciplinary workflow was followed in order to characterize the Abu Madi reservoir. The workflow combined, core data evaluation, description, and flow-units classification. Petrophysical reservoir properties and permeability prediction, based on their vertical distribution and association. The identified facies are grouped into main major facies groups, each facies group is described in terms of its main characteristics, and flow-units, which acted as a main driver for the properties distribution away from the wells and constructing a 3D Geomodel. Finally the proper understanding and interpretation of the Abu Madi sand reservoir deposition including the paleo-depositional environment and flow units distribution are a key issue in assessing upper Messinian reservoir quality of the Onshore Nile Delta. | ||
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