An Integrative Modeling Of Ras Budran Field, Gulf Of Suez, Egypt Presented by Hafsa Mahmoud Atia Atia

Lecturer of Applied Geophysics- Geology Department-Mansoura University Monday, May 07, 2018 Overview – Geologic Setting – Formation Evaluation - 1D Model - Source Rock - Reservoir Rock - Conclusion SUPERVISORS Prof. Dr. Ibrahim Korrat Professor of Applied Geophysics- Geology Department-Mansoura University Dr. Mohammed Awad Ahmed Lecturer of Applied Geophysics- Geology Department-Mansoura University Aims  Reconstructing the multi-phase tectonic history responsible for the development of the basin. Determining the petrophysical parameters of the analyzed reservoirs. Estimating the basal heat flow and source maturation. Determining the oil-generation window is the objective of maturity analysis performed on possible source rocks. Determining the effect of igneous intrusion on hydrocarbon generation.

Monday, May 07, 2018 Overview – Geologic Setting – Formation Evaluation - 1D Model - Source Rock - Reservoir Rock - Conclusion

Monday, May 07, 2018 Overview – Geologic Setting – Formation Evaluation - 1D Model - Source Rock - Reservoir Rock - Conclusion

Monday, May 07, 2018 Overview – Geologic Setting – Formation Evaluation - 1D Model - Source Rock - Reservoir Rock - Conclusion

Monday, May 07, 2018 Overview – Geologic Setting – Formation Evaluation - 1D Model - Source Rock - Reservoir Rock - Conclusion

Monday, May 07, 2018 Overview – Geologic Setting – Formation Evaluation - 1D Model - Source Rock - Reservoir Rock - Conclusion

Thebes organic rich intervals: Thebes-S2 entered oil window: Monday, May 07, 2018 Overview – Geologic Setting – Formation Evaluation - 1D Model - Source Rock - Reservoir Rock - Conclusion Thebes organic rich intervals: Thebes-S2 entered oil window: Burdigalian ~18.25 Mabp at RB-B3 well, during the thermal subsidence and after the Oligocene Rifting Phase. hydrocarbon generation mainly related to basin evolution. Thebes S2 entered gas window: at RB-B3 well (~17.55 Mabp Burdigalian), after both the Oligocene Rifting Phase and its associated thermal subsidence (mainly related to basin evolution). at RB-C1 well at (~6.6 Mabp Messinian Time) during deposition of Zeit Formation. (mainly related to the basin burial). the expulsion of Thebes-S2 (Early Miocene at ~17.2 Mabp ) at RB-B3 well and after gas generation at RB-C1 well before gas generation. hydrocarbon generation mainly related to basin evolution at EE85-2 well where Thebes-S1 entered oil window at (~17.9 Mabp Burdigalian). at EE85-2 well, the gas window of Thebes-S1 is younger in age (~5.65 Mabp Messinian) during the deposition of Zeit Formation. the expulsion of the hydrocarbons of Thebes-S1 occurred mainly during the Messinian Time Event and after the generation of the gas.

Duwi organic-rich interval: Monday, May 07, 2018 Overview – Geologic Setting – Formation Evaluation - 1D Model - Source Rock - Reservoir Rock - Conclusion Duwi organic-rich interval: the oil window close to the Early Miocene (Burdigalian ~18.25 Mabp). the gas window since ~17.55 Mabp (Early Miocene). at RB-A5, RB-B1, RB-B3 and RB-B4 wells. the maturity is closely related to basin evolution with a minor heat flow influence at RB-A5, RB-B1, RB-B3 and RB-B4 well. the oil window close to Late Pliocene (~2.4 Mabp Gelasian) and has been in the wet gas windows since ~0.9 Mabp (Early Pleistocene), at RB-A1 well. at RB-A1 well the maturity is mainly related to basin burial. at EE85-2 well and RB-A2 well, the oil windows close to the Early Miocene (~22 Mabp) and has been in the over-mature phase since ~ 22 Mabp. the expulsion of the hydrocarbons occurred mainly after the generation of the gas and at the beginning of the Miocene Rifting Phase (~17.2 Mabp Burdigalian) the expulsion occurred since Early Miocene at ~21.99 Mabp at RB-A2 and EE85-2 wells.

Wata organic rich interval: Monday, May 07, 2018 Overview – Geologic Setting – Formation Evaluation - 1D Model - Source Rock - Reservoir Rock - Conclusion Wata organic rich interval: the oil windows close to the Early Miocene (Burdigalian ~18.25 Mabp), and has been in the wet gas windows since ~17.55 Mabp (Early Miocene) at both wells RB-C1 and RB-B5 well. at RB-A2 well entered the oil windows close to the Early Miocene (~22 Mabp) and has been in the over-mature phase since ~ 22 Mabp. the expulsion of the hydrocarbons occurred Early Miocene (~17.2 Mabp) mainly after the generation of the gas and after the Miocene Rifting Phase. at RB-C1 well, the generated hydrocarbon partially accumulated in the source rock and adsorbed by the organic matter. whereas at RB-B5 well, the generated hydrocarbon slightly accumulated in the source rock and adsorbed by the organic matter.

Nubia A oil-bearing zone: Monday, May 07, 2018 Overview – Geologic Setting – Formation Evaluation - 1D Model - Source Rock - Reservoir Rock - Conclusion Nubia A oil-bearing zone: shale volume values range from 0.7% to 7% (Clean Zone). the effective porosity values range from 10% to 20%. the water saturation values range from 4% to 31%. Nubia C oil-bearing zone: shale volume values range from 0.7% to 4% (Clean Zone). the water saturation values range from 3% to 18%. Reservoir thermal history: more than 160°F and less than 360°F, since ~17.2 Mabp ”Burdigalian” . the first expulsion of the Wata-S, Duwi-S and Thebes-S2 occurred at all wells this may suggest no effect of biodegradation and suggests a thermodynamically stable crude oil without any possibility to secondary cracking gas generation.

Monday, May 07, 2018 Overview – Geologic Setting – Formation Evaluation - 1D Model - Source Rock - Reservoir Rock - Conclusion The generated hydrocarbon partially accumulated in the source rock and adsorbed by the organic matter. Not all expelled hydrocarbons accumulated in the reservoir but mostly was lost through the migration pathways. Possible lateral migration pathways (Northward): Wata organic rich interval (RB-C1 well) may be charged Nubia A-P at RB-B4, RB-B3, RB-B1 wells and Raha at RB-B4 well. Duwi organic rich interval (EE85-2 well) may be charged Nubia A-P at RB-B4, RB-B3 well and Raha at RB-B4 well. Possible lateral migration pathways (Eastward): Wata organic rich interval (RB-B5 well) may be charged Nubia A-P at RB-B4 well and Raha at RB-B4 well. Recommendations 2D modeling for migration pathways simulation Petroleum generation kinetics of Wata, Thebes and Duwi formation is highly recommended.

Thank you for your attention Monday, May 07, 2018 Overview – Geologic Setting – Formation Evaluation - 1D Model - Source Rock - Reservoir Rock - Conclusion Thank you for your attention