مجله ژئوفیزیک ایران

مجله ژئوفیزیک ایران

Formation evaluation of middle Miocene reservoirs via petrophysical analysis of well logging data; case study from Southern part of Gulf of Suez, Egypt

نوع مقاله : مقاله پژوهشی‌

نویسندگان
1 M.Sc.,Geophysics Department, Faculty of Science, Cairo University, Giza, Egypt
2 Professor, Geophysics Department, Faculty of Science, Cairo University, Giza, Egypt
3 Assistant Professor, Geophysics Department, Faculty of Science, Cairo University, Giza, Egypt
چکیده
The Amal oil field is located in the southern part of the Gulf of Suez and produces hydrocarbons mainly from middle Miocene reservoirs. It is marked by uncertainties in the southern part of the Gulf of Suez province because of the structural complexity, lateral facies change, different lithologies, and diverse reservoir quality. Therefore, in this approach, different reservoir properties of the
Hammam Faraun Member of the Belayim Formation, the Markha Member of the Kareem Formation, and the Upper Rudies Member are obtained and evaluated. The main reservoirs are composed of sand and shale intercalations. The wireline logging data (gamma ray, density, neutron, sonic, and resistivity logs) of four wells were used mainly for the petrophysical analyses of hydrocarbon reservoirs. The three most important parameters in petrophysical evaluation: shale content, porosity, and fluid saturation are calculated for the main reservoirs to construct the litho-saturation model for each well. Each of these parameters is mapped to study their areal variation across the study area and estimate the appropriate locations for the new development wells. Fluid saturations are estimated based on the Indonesian formula due to shale presence. The study exhibited that Hammam Faraun, Markha, and Upper Rudies Formations have porosity of 0.15-0.17, 0.15-0.23, 0.12-0.27; shale
volume of 0.3-0.36, 0.12-0.51, 0.19-0.37; and water saturation of 0.34-0.6, 0.33-0.51, 0.48-0.6,
respectively. The results show an increasing trend toward the central part in porosity, sandy facies, and oil saturation. Based on the petrophysical evaluation and the mapping, the central part of the field is very promising for development and production activities.
کلیدواژه‌ها

موضوعات


عنوان مقاله English

Formation evaluation of middle Miocene reservoirs via petrophysical analysis of well logging data; case study from Southern part of Gulf of Suez, Egypt

نویسندگان English

Mohammed Amer 1
Walid M. Mabrouk 2
Khaled S. Soliman 2
Amr M. EID 1
Ahmed Metwally 3
1 M.Sc.,Geophysics Department, Faculty of Science, Cairo University, Giza, Egypt
2 Professor, Geophysics Department, Faculty of Science, Cairo University, Giza, Egypt
3 Assistant Professor, Geophysics Department, Faculty of Science, Cairo University, Giza, Egypt
چکیده English

The Amal oil field is located in the southern part of the Gulf of Suez and produces hydrocarbons mainly from middle Miocene reservoirs. It is marked by uncertainties in the southern part of the Gulf of Suez province because of the structural complexity, lateral facies change, different lithologies, and diverse reservoir quality. Therefore, in this approach, different reservoir properties of the
Hammam Faraun Member of the Belayim Formation, the Markha Member of the Kareem Formation, and the Upper Rudies Member are obtained and evaluated. The main reservoirs are composed of sand and shale intercalations. The wireline logging data (gamma ray, density, neutron, sonic, and resistivity logs) of four wells were used mainly for the petrophysical analyses of hydrocarbon reservoirs. The three most important parameters in petrophysical evaluation: shale content, porosity, and fluid saturation are calculated for the main reservoirs to construct the litho-saturation model for each well. Each of these parameters is mapped to study their areal variation across the study area and estimate the appropriate locations for the new development wells. Fluid saturations are estimated based on the Indonesian formula due to shale presence. The study exhibited that Hammam Faraun, Markha, and Upper Rudies Formations have porosity of 0.15-0.17, 0.15-0.23, 0.12-0.27; shale
volume of 0.3-0.36, 0.12-0.51, 0.19-0.37; and water saturation of 0.34-0.6, 0.33-0.51, 0.48-0.6,
respectively. The results show an increasing trend toward the central part in porosity, sandy facies, and oil saturation. Based on the petrophysical evaluation and the mapping, the central part of the field is very promising for development and production activities.

کلیدواژه‌ها English

Southern Gulf of Suez
Middle Miocene reservoirs
petrophysical analysis
matrix identification
hydrocarbon indicators
Abuel Ata, A. S. A., Azzam, S. S. S., and El-Sayed, N. A. A. (2012). The improvements of three-dimensional seismic interpretation in comparison with the two-dimensional seismic interpretation in Al-Amal oil field, Gulf of Suez, Egypt. Egyptian Journal of Petroleum, 21(1). https://doi.org/10.1016/j.ejpe.2012.02.004
Abuzaied, M., Metwally, A., Mabrouk, W., Khalil, M., and Bakr, A. (2019). Seismic interpretation for the Jurassic/Paleozoic reservoirs of QASR gas field, Shushan-Matrouh basin north Western Desert, Egypt. Egyptian Journal of Petroleum, 28(1). https://doi.org/10.1016/j.ejpe.2018.12.008
Afifi, A. S., Moustafa, A. R., and Helmy, H. M. (2016). Fault block rotation and footwall erosion in the southern Suez rift: Implications for hydrocarbon exploration. Marine and Petroleum Geology, 76, 377–396.
Alsharhan, A. S. (2003). Petroleum geology and potential hydrocarbon plays in the Gulf of Suez rift basin, Egypt. AAPG Bulletin, 87(1).
Alsharhan, A. S., and Salah, M. G. (1994). Geology and hydrocarbon habitat in a rift setting: southern Gulf of Suez, Egypt. Bulletin of Canadian Petroleum Geology, 42(3).
Amer, M., Mabrouk, W. M., Soliman, K. S., Noureldin, A. M., and Metwally, A. (2023). Three-Dimensional Integrated Geo-Static Modeling for Prospect Identification and Reserve Estimation in the Middle Miocene Multi-Reservoirs: A Case Study from Amal Field, Southern Gulf of Suez Province. Natural Resources Research. https://doi.org/10.1007/s11053-023-10253-w
Archie, G. E., and others. (1942). The electrical resistivity log as an aid in determining some reservoir characteristics. Transactions of the AIME, 146(01).
Asquith, G. B., and Gibosn, C. R. (1982). Basic well log analysis for geologists. American Association of Petroleum Geologists.
Attia, M. M., Abudeif, A. M., and Radwan, A. E. (2015). Petrophysical analysis and hydrocarbon potentialities of the untested Middle Miocene Sidri and Baba sandstone of Belayim Formation, Badri field, Gulf of Suez, Egypt. Journal of African Earth Sciences, 109. https://doi.org/10.1016/j.jafrearsci.2015.05.020
Avseth, P., Mukerji, T., Mavko, G., and Dvorkin, J. (2010). Rock-physics diagnostics of depositional texture, diagenetic alterations, and reservoir heterogeneity in high-porosity siliciclastic sediments and rocks - A review of selected models and suggested work flows. Geophysics, 75(5). https://doi.org/10.1190/1.3483770
Best, D. L., Gardner, J. S., and Dumanoir, J. L. (1978). A computer-processed wellsite log computation. SPWLA Annual Logging Symposium, SPWLA–1978.
Buckles, R. S. (1965). Correlating and Averaging Connate Water Saturation Data. Journal of Canadian Petroleum Technology, 4(01). https://doi.org/10.2118/65-01-07
Chikiban, B., Kamel, M. H., Mabrouk, W. M., and Metwally, A. (2022). Petrophysical characterization and formation evaluation of sandstone reservoir: Case study from Shahd field, Western Desert, Egypt. Contributions to Geophysics and Geodesy, 52(3). https://doi.org/10.31577/congeo.2022.52.3.5
Faramani, E. R., Riahi, M. A., and Hashemi, H. (2019). Constrained seismic sequence stratigraphy of Asmari - Kajhdumi interval with well-log Data. Iranian Journal of Geophysics, 12(5).
Farouk, S., Sen, S., Pigott, J. D., and Sarhan, M. A. (2022). Reservoir characterization of the middle Miocene Kareem sandstones, Southern Gulf of Suez Basin, Egypt. Geomechanics and Geophysics for Geo-Energy and Geo-Resources, 8(5), 130.
Fertl, W. H. (1978). Practical log analysis. Part 8. R/sub wa/method: fast formation evaluation. Oil Gas J.;(United States), 76.
Hassan, A. M., Mabrouk, W. M., and Farhoud, K. M. (2014). Petrophysical analysis for Ammonite-1 well, Farafra Area, Western Desert, Egypt. Arabian Journal of Geosciences, 7(12). https://doi.org/10.1007/s12517-013-1123-y
Hempton, M. R. (1987). Constraints on Arabian Plate motion and extensional history of the Red Sea. Tectonics, 6(6). https://doi.org/10.1029/TC006i006p00687
Kassem, A. A., Sharaf, L. M., Baghdady, A. R., and El-Naby, A. A. (2020). Cenomanian/Turonian oceanic anoxic event 2 in October oil field, central Gulf of Suez, Egypt. Journal of African Earth Sciences, 165. https://doi.org/10.1016/j.jafrearsci.2020.103817
Khalil, S. M. (1998). Tectonic evolution of the eastern margin of the Gulf of Suez, Egypt. Royal Holloway, University of London.
Lyaka, A., and Mulibo, G. (2018). Petrophysical Analysis of the Mpapai well Logs in the East Pande Exploration Block, Southern Coast of Tanzania: Geological Implication on the Hydrocarbon Potential. Open Journal of Geology, 8, 781–802.
Mabrouk, W. M., and Soliman, K. S. (2015). A numerical technique for an accurate determination of formation resistivity factor using FR-RO overlays method. Arabian Journal of Geosciences, 8(3). https://doi.org/10.1007/s12517-014-1311-4
Metwally, A. M., Mabrouk, W. M., and Mahmoud, A. I. (2022). A numerical approach to accurately estimate water resistivity (Rw) and saturation (Sw) in shaly sand formations. Contributions to Geophysics and Geodesy, 52(3), 423–441. https://doi.org/10.31577/congeo.2022.52.3.4
Misaghi, A., Anvari, L., and Asef, M. R. (2021). Porosity estimation of gas reservoir rocks using vertical seismic profiling data- a case study in the Persian Gulf. Iranian Journal of Geophysics, 15(2). https://doi.org/10.30499/ijg.2021.284833.1327
Mostafa, A., Sehim, A., and Yousef, M. (2015). Unlocking subtle hydrocarbon plays through 3D seismic and well control: A case study from west Gebel El Zeit district, southwest Gulf of Suez, Egypt. Offshore Mediterranean Conference and Exhibition, OMC 2015.
Moustafa, A. M. (1976). Block faulting in the Gulf of Suez. Proceedings of the 5th Egyptian General Petroleum Corporation Exploration Seminar, 35.
Nanda, N. C., and Nanda, N. C. (2016). Seismic Wave Propagation and Rock-Fluid Properties. Seismic Data Interpretation and Evaluation for Hydrocarbon Exploration and Production: A Practitioner’s Guide, 3–17.
Noureldin, A. M., Mabrouk, W. M., Chikiban, B., and Metwally, A. (2023). Formation evaluation utilizing a new petrophysical automation tool and subsurface mapping of the Upper Cretaceous carbonate reservoirs, the southern periphery of the Abu-Gharadig basin, Western Desert, Egypt. Journal of African Earth Sciences, 205. https://doi.org/10.1016/j.jafrearsci.2023.104977
Okeil, M., Sakran, S., Refaat, A., El-Gamil, S., and Ramzy, M. (2019). INTEGRATED GEOLOGICAL INTERPRETATION FOR MODELING THE COMPLICATED RESERVOIRS; AN EXAMPLE FROM UPPER RUDEIS AND KAREEM RESERVOIRS, AMAL FIELD, SOUTHERN GULF OF SUEZ RIFT, EGYPT. Egyptian Journal of Geology, 63, 101–114.
Patton, T. L., Moustafa, A. R., Nelson, R. A., and Abdine, S. A. (1994). Tectonic evolution and structural setting of the Suez rift: chapter 1: Part I. Type basin: Gulf of Suez.
Pickett, G. R. (1972). Practical formation evaluation. GR Pickett.
Poupon, A., and Leveaux, J. (1971). Evaluation of water saturation in shaly formations. SPWLA Annual Logging Symposium, SPWLA–1971.
Radwan, A. E., Abdelghany, W. K., and Elkhawaga, M. A. (2021). Present-day in-situ stresses in Southern Gulf of Suez, Egypt: Insights for stress rotation in an extensional rift basin. Journal of Structural Geology, 147. https://doi.org/10.1016/j.jsg.2021.104334
Radwan, A. E., Abudeif, A. M., Attia, M. M., and Mohammed, M. A. (2019). Pore and fracture pressure modeling using direct and indirect methods in Badri Field, Gulf of Suez, Egypt. Journal of African Earth Sciences, 156. https://doi.org/10.1016/j.jafrearsci.2019.04.015
Ramadan, M. A. M., Abd El Hamed, A. G., Badran, F., and Nooh, A. Z. (2019). Relation between hydrocarbon saturation and pore pressure evaluation for the Amal Field area, Gulf of Suez, Egypt. Egyptian Journal of Petroleum, 28(1). https://doi.org/10.1016/j.ejpe.2018.04.005
Roberts, D. G. (2012). Regional Geology and Tectonics: Phanerozoic Rift Systems and Sedimentary Basins. In Regional Geology and Tectonics: Phanerozoic Rift Systems and Sedimentary Basins. https://doi.org/10.1016/C2010-0-67671-1
Shehata, A. A., Kassem, A. A., Brooks, H. L., Zuchuat, V., and Radwan, A. E. (2021). Facies analysis and sequence-stratigraphic control on reservoir architecture: Example from mixed carbonate/siliciclastic sediments of Raha Formation, Gulf of Suez, Egypt. Marine and Petroleum Geology, 131. https://doi.org/10.1016/j.marpetgeo.2021.105160
Stephens, D. B., Hsu, K. C., Prieksat, M. A., Ankeny, M. D., Blandford, N., Roth, T. L., Kelsey, J. A., and Whitworth, J. R. (1998). A comparison of estimated and calculated effective porosity. Hydrogeology Journal, 6(1). https://doi.org/10.1007/s100400050141.