Seismic Stratigraphy Interpretation and Petroleum Exploration at the Scarab field, Offshore, Nile Delta, Egypt
Abstract
The Scarab field, situated in the Nile Delta concession of western Delta, has estimated that reservations of high-quality gas are greater than four trillion cubic feet. 2D Seismic dataset supported by composite logs enables the interpreter to generate a detailed view of the output results. Detection of the reservoir zone can be enhanced by analyzing wells log data based on Gamma-ray, Resistivity, and Vp sonic logs respectively. Composite logs of Scarab-Da, Scarab-Db, and Scarab-Dc wells indicate the lateral and vertical variation of the gas reservoir in El Wastani Formation. However, for enhancement of the detection of the hydrocarbon reservoirs, it is important to carefully analyze the well log dataset of the three wells as well as the available 2D seismic dataset. Based on the lithofacies distribution of the studied formation. The effective porosity and the hydrocarbon saturation increase in El Wastani Formation. In all wells, the average shale content is 0.35 %, the effective porosity is 0.20%, the water saturation is 0.25%, and the net pay range is 25 to 50 m. It is obvious that the facies effect is the main factor that is controlling the distribution of the petrophysical properties, within all wells.
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References
A., Abdel Aal, A., El Barkooky, M., Gerrits, H., Meyer, M., Schwander and H., Zaki, (2000). Tectonic evolution of the Eastern Mediterranean Basin and its Significance for Hydrocarbon Prospectivity in the ultra-deep water of the Nile Delta: The Leading Edge, 1086-1102.
Abu El-Ella, (1990). Maturation history of Neogene-Quaternary sediments, Nile delta basin, Egypt: AAPG Bulletin 74:1(1). DOI: 10.1306/0C9B221D-1710-11D7-8645000102C1865D.
Ayyad, M. H., Darwish, M., (1996). Syrian Arc Structures: A unifying model of inverted basins and hydrocarbon occurrences in North Egypt. EGPC Expl. and Prod. Conf., Cairo.
Barsoum, K., Della, M., Kamal, M., 2002. Gas chimneys in the Nile Delta slope and gas field occurrence. In: MOC 2002. Alex., Cairo
Bermúdez-Lugo O., (2003). The mineral industry of Egypt. US Geol. Surv. Minerals yearbook 2002.
Bertello, M., (1996). A Giant Fas Field in a Deep Sea Turbidite Environment, EGPC 13th Petroleum Exploration and Production Conference-Exploration, 1996, Volume 1.pp.165-181.
Chopra, S., Sharma, R.K., 2016. Preconditioning of seismic data prior to impedance inversion. https://explorer.aapg.org/story?articleid=24631.
EGPC, Egyptian General Petroleum Corporation. (1994). Nile Delta and North Sinai: Fields, Discoveries and Hydrocarbon Potentials (A Comprehensive Overview). Cairo, Egypt.
Ismail, A., Ewida, H. F., Al-Ibiary, M. G., & Zollo, A. (2020a). Application of AVO attributes for gas channels identification, West offshore Nile Delta, Egypt. Petroleum Research, 5(2), 112-123.
Ismail, A., Ewida, H. F., Al-Ibiary, M. G., & Zollo, A. (2020b). Integrated prediction of deep-water gas channels using seismic coloured inversion and spectral decomposition attribute, West offshore, Nile Delta, Egypt. NRIAG Journal of Astronomy and Geophysics, 9(1), 459-470.
Ismail, A., Ewida, H. F., Al-Ibiary, M. G., Gammaldi, S., & Zollo, A. (2020c). Identification of gas zones and chimneys using seismic attributes analysis at the Scarab field, offshore, Nile Delta, Egypt. Petroleum Research, 5(1), 59-69.
Ismail, A., Ewida, H. F., Al-Ibiary, M. G., Nazeri, S., Salama, N. S., Gammaldi, S., & Zollo, A. (2020d). The detection of deep seafloor pockmarks, gas chimneys, and associated features with seafloor seeps using seismic attributes in the West offshore Nile Delta, Egypt. Exploration Geophysics, 1-21.
Nanda N (2016) Seismic data interpretation and evaluation for hydrocarbon exploration and production. Springer, Berlin. https://doi.org/10.1007/978-3-319-26491-2. ISBN 978-3-319-26489-9.
Niazi, M., Dahi, M., 2004. Un – explored giant sandstone features in ultra – deep water, west Mediterranean, Egypt. In: AAPG International Conference: October 24-27. Cancun, Mexico.
Reilly, J.M., 2016. Marine broadband technology: history and remaining challenges from an end-user perspective. Lead. Edge 35 (4), 316–321.
Samuel, A., Kneller, B., Raslam, S., Andy, S., Parsons, C., (2003). Prolific deep-marine slope channels of the Nile Delta, Egypt: AAPG Bulletin, 87, 541-560.
Vandré, C., Cramer, B., Gerling, P., Winsemann, J., (2007). Natural gas formation in the western Nile delta (Eastern Mediterranean): Thermogenic versus microbial: Organic Geochemistry, 38(4), 523-539.
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