PETROPHYSICAL EVALUATION OF MIT GHAMR FORMATION, TAURT GAS FIELD, RAS EL-BARR CONCESSION, OFFSHORE NILE DELTA, EGYPT | ||
| Journal of Egyptian Geophysical Society | ||
| Volume 17, Issue 1, 2019, Pages 59-69 PDF (1.36 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jegs.2019.402336 | ||
| Authors | ||
| A.M. ELSAYED; E.M. ABD EL-RHMAN | ||
| Geophysics Department, Faculty of Science, Ain Shams University, Cairo, Egypt. | ||
| Abstract | ||
| Well logging is a study of acquiring information on physical properties of rocks that are exposed during drilling of wells. The present study deals with evaluation of the gas-bearing sand formations of Early Pleistocene sediments (Mit Ghamr Formation) of five wells located in Taurt field, Ras El-Barr Concession, Offshore Nile Delta of Egypt at latitude 29° 32' 0.3768'' N and longitude 31° 16' 14.5020''E. The petrophysical evaluation of Taurt field by using the available well logs, cross plots and the pressure datasets for determining the different petrophysical parameters such as shale volume (Vsh), effective porosity (Φe) , formation water resistivity (Rw), hydrocarbon saturation (Sh)..etc, necessary for reservoir evaluation. This study reveals the presence of three gas-bearing sand zones (S10, S20 and S30) of Taurt field that located in eastern offshore part of the Nile Delta, Egypt with good hydrocarbon potential, encountered at different depth levels at the Pleistocene Mit Ghamr Formation. In all studied wells, three hydrocarbon bearing levels were delineated from well logs. These horizons were analyzed and the petrophysical parameters were estimated. Well log analysis revealed that the gas-water contact is at 1370m TVDSS. The constructed litho-saturation cross plots reflect the vertical variation of the petrophysical characteristics and iso-parametric maps to verify the lateral variation of petrophysical properties. The analysis of pressure data is concerned mainly with locating the different fluid contacts, vertical and horizontal connection between reservoirs and determining the pressure gradients of the gas-bearing zones. Very close pressure regimes are detected for most of the investigated gas zones throughout the study area | ||
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