Abstract
The Cenomanian marine sequence in north Sinai is mostly represented by El-Halal Formation. Petrographically, it is composed of four microfacies, namely: (1) dolomitic micrite, (2) dolomicrite, (3) dolowackestone and (4) dolosparite. The assigned pore volume (10–25%) could be differentiated into: micro intercrystalline pore spaces, micro to meso vugs and micro pore channels. The present pore spaces are frequently reduced by drusy and/or xenotopic dolosparite and micro sparry calcite. El-Halal Formation has been deposited in a restricted marine platform (SMF-23, FZ-8) with a progressive shallowing sea level upward. The diagenetic history has been controlled by cementation, dolomitization, aggrading neomorphism and creation of authigenic illite. Petrophysically, the studied samples could be grouped into three petrophysical facies: (1) dolomitic micrite/dolomicrite facies, (2) dolowackestone and (3) dolosparite. The permeability (ave. 3.54, 12.9 and 0.49 md, respectively) is dependent on the pore channel radius (ave. 1.03, 1.92 and 0.19 μm, respectively) and porosity (ave. 22.1%, 25.8% and 11.4%, respectively); it could be related to the electrical tortuosity as well (ave. 3.28, 1.40 and 5.06, respectively). The apparent formation resistivity factor was measured at five consequent saline concentrations of 6, 30, 60, 90 and 120 kppm and the true one has been calculated. It is controlled by the effective porosity and electrical tortuosity. Though dolomitization has an enhancing effect on the studied petrophysical features, it had a reducing effect in its first stages of invasion through filling the pore spaces and in the last stages through the aggrading neomorphism.
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References
Abdallah AM, El-Adindani A (1963) Notes on the Cenomanian–Turonian contact in the Galala Plateau, Eastern Desert, Egypt. Egy J Geol 7(1):67–70
Abdallah AM, Aboul Ela NM, Saber SG (1996) Lithostratigraphy, microfacies and depositional environments of the Cretaceous rocks at Gabal Halal, Northern Sinai, Egypt. Proceedings 3rd Int Conf Geol Arab World, Egypt, pp 381–406
Aboul Ela NM, Abdel-Gawad GL, Aly MF (1991) Albian fauna of Gabal Manzour, Maghara area, north Sinai, Egypt. J Afr Earth Sci 13(2):201–220
Abu El-Hassan M, Wanas HA (2005) Dolomitization of the Cenomanian–Turonian carbonate rocks along the western side of the Gulf of Suez: implication to sea level oscillations. Bull Fac Sci Alex Univ Egypt 43:245–270
Abu-Zied RH (2007) Palaeoenvironmental significance of early Cretaceous foraminifera at northern Sinai, Egypt. Cret Res 28:765–784
Abu-Zied RH (2008) Lithostratigraphy and biostratigraphy of some Lower Cretaceous outcrops from Northern Sinai, Egypt. Cret Res 29:603–624
Ahr WM (2005) Carbonate reservoir geology. Texas A&M Univ, College Station
Aly MF, Abdel-Gawad GI, Gabir MA (2005) Upper most Albian–Cenomanian ammonites from north Sinai, Egypt. Egy J Paleont 5:347–385
Amyx JW, Bass DM, Whiting RL (1960) Petroleum reservoir engineering: physical properties. McGraw-Hill, London
Bachmann M, Kuss J (1998) The Middle Cretaceous carbonate ramp of the northern Sinai: sequence stratigraphy and facies distribution. In: Wright, VP, Burchette, TP (eds) Carbonate ramps. Geol. Soc. London, Special Publications, 149:253–280
Bachmann M, Bassiouni MAA, Kuss J (2003) Timing of mid-Cretaceous carbonate platform depositional cycles, northern Sinai, Egypt. Palaeogeogr Palaeoclimat Palaeoeco 200:131–162
Benson DJ (1985) Diagenetic controls on reservoir development and quality, Smackover Formation of southwest Alabama. Gulf Coast Assoc Geol Soc Trans 35:317–326
Biju-Duval B, Letouzey J, Montadert L (1979) Variety of margins and deep basins in the Mediterranean. In: Geological and geophysical investigations of continental margins. AAPG Bull M 29:293–317
Carman PC (1956) Flow of gases through porous media. Butterworths, London
Cherif OH, Al-Rifaiy IA, Al-Afifi FI, Orabi OH (1989) Foraminiferal biostratigraphy and paleoecology of Cenomanian–Turonian exposures in west central Sinai, Egypt. Rev De Micropaléontol 31(4):243–262
Choquette PW, Pray LC (1970) Geologic nomenclature and classification of porosity in sedimentary carbonates. AAPG Bull 54(2):207–250
De Beaumont E (1837) Application de calcul a l'hypothese de la formation par epigenie des anhydrites, des gypses et des dolomies. Soc Geol France Bull 8:174–177
Dickson JAD (1966) Carbonate identification and genesis revealed by staining. J Sediment Petrol 36(2):491–505
Dullien F (1992) Porous media: fluid transport and pore structure, 2nd edn. Academic, California
Dunham RJ (1962) Classification of carbonate rocks according to depositional texture. In: Ham WE (ed) Classification of carbonate rocks. AAPG Mem 1:108–121
El-Araby A (2002) Depositional sequences in shallow carbonate-dominated sedimentary systems: an example from the Cenomanian Halal Formation, Gabal Halal, North Sinai, Egypt. Proc. 6th Int. Conf. Geol. Arab World, Cairo University, Egypt, pp 655–676
El-Azabi MH, El-Araby A (1996) Depositional facies and paleoenvironments of the Albian–Cenomanian sediments in Gabal El-Minshera, north central Sinai, Egypt. Geol Soc Egypt 2:151–198, Spec. Publ
Embry AF, Klovan JE (1972) A Late Devonian reef tract on northeastern banks of Island, Northwest Territories. Can Petrol Geol Bull 19:730–781
Flügel E (1982) Microfacies analysis of limestones (translated). Springer, Berlin
Folk RL (1959) Practical petrographic classification of limestones. AAPG Bull 43:1–38
Genedi A (1998) Formation of the Upper Cretaceous cherts in northeastern Sinai, Egypt. J Afr Earth Sci 26(2):297–311
Ghorab MA (1961) Abnormal stratigraphic features in Ras Gharib oil field, Gulf of Suez, Egypt. Proc. 3rd Arab Petrol Cong, Alexandria, Egypt, pp 1–10
Glover PWJ, Gomez JB, Meredith PG, Boon SA, Sammonds PR, Murrell SAF (1996) Modeling the stress–strain behavior of saturated rocks undergoing triaxial deformation using complex electrical conductivity measurements. Surv Geophys 17:307–330
Glover PWJ, Gomez JB, Meredith PG, Hayashi K, Sammonds PR, Murrel SAF (1997) Damage of saturated rocks undergoing triaxial deformation using complex electrical conductivity measurements: experimental results. Phys Chem Earth 22:57–61
Guéguen Y, Palciauskas V (1994) Introduction to the physics of rocks. Princeton University Press, New Jersey
Hamza FH, Ismail AA, El-Saadany MA (1994) Biostratigraphy and paleoecology of some Cretaceous exposures in northern Sinai, Egypt. Proceedings 12th Petroleum Exploration and Production Conference, Cairo, 12–15 November, pp 482–495
Issawi B, El-Hinnawi M, Francis M, Mazhar A (1999) The Phanerozoic geology of Egypt: a geodynamic approach. Egyptian Geol Surv 76:462, Special Publications
Jacquin Ch (1964) Corrélations entre la perméabilité et les caractéristiques géométriques du grès de fontainebleau. Rev Inst Français du Pétrol 19:921–937
Jouniaux L, Zamora M, Reuschlé T (2006) Electrical conductivity evolution of non-saturated carbonate rocks during deformation up to failure. Geophys J Int 167:1017–1026
Katz AJ, Thompson AH (1986) Quantitative prediction of permeability in porous rock. Phys Rev B34:8179–8181
Katz AJ, Thompson AH (1987) Prediction of rock electrical conductivity from mercury injection measurements. J Geophys Res 92:599–607
Khalifa MA (1996) Depositional cycles in relation to sea level changes, case studies from Egypt and Saudi Arabia. Egypt J Geol 40:141–171
Klinkenberg LJ (1941) The permeability of porous media to liquids and gases. In: Drilling and production practice 2. Am Petrol Ins 200–213
Kora M, Shahin A, Semiet A (1994) Biostratigraphy and paleoecology of some Cenomanian successions in west central Sinai, Egypt. Neues Jahrbuch Geologie Paläontologie Mh H 10:597–617
Landau L, Lifshitz E (1987) Fluid mechanics, 2nd edn. Trans. Skyes, JB, Reid, WH, Pergamon, Toronto
Mavko G, Mukerji T, Dvorkin J (2009) The rock physics handbook: tools for seismic analysis of porous media. Cambridge University Press, London
Moustafa AR, Khalil MH (1990) Structural characteristics and tectonic evolution of north Sinai fold belts. In: Said R (ed) The geology of Egypt. Balkema, Rotterdam, pp 381–389
Mutti M, Simo JA (1994) Distribution, petrography and geochemistry of dolomite in cyclic shelf facies, Yates formation (Guadalupian), Capitan Reef Complex, USA. Int Ass Sediment 21:91–107, Special Publications
Pittet P, Strasser A, Dupraz C (1995) Paleoecology, palaeoclimatology and cyclostratigraphy of shallow-water carbonate siliciclastic transition the Oxfordian of the Swiss Jura. Field Trip Guide book, 16th IAS Regional Meet Sediment, ASF, 23:225–254
Qing H, Bosence DW, Rose EP (2001) Dolomitization by penesaline seawater in Early Jurassic peritidal platform carbonates, Gibraltar, western Mediterranean. Sedimentology 48:153–163
Said R (1962) The geology of Egypt. Elsevier, Amsterdam
Said R (1971) Exploratory notes to accompany the geological map of Egypt. Geol. Surv. Egypt, paper 56
Scheidegger A (1974) The physics of flow through porous media, 3rd edn. University of Toronto Press, Toronto
Serra O (1984) Fundamentals of well-log interpretation. Elsevier, Amsterdam
Shahin A (2000) Albian ostracods from northern Sinai, Egypt. 2nd International Conference on the Geology of Africa for Basic Science and Advanced Technology (BAST-II). Assiut Univ., Assiut, 129–156
Shahin A (2001) Contribution to the knowledge of the Early Cretaceous foraminiferal assemblages, their paleoecology and paleogeography in the northern Sinai, Egypt. NJ Geol Palaeont 221:397–440
Tawfik N, Ebeid Z (1972) On the stratigraphy of the Upper Cretaceous in the Gulf of Suez region. 5th Afr Micropaleont, Addis-Ababa, pp 659–701
Wanas HA (2008) Cenomanian rocks in the Sinai peninsula, northeast Egypt: facies analysis and sequence stratigraphy. J Afr Earth Sci 52:125–138
Warren J (2000) Dolomite: occurrence, evolution and economically important association. Earth Sci Rev 52:1–81
Wilson JL (1975) Carbonate facies in geologic history. Springer, New York
Worthington PF (1985) Evolution of shaley sand concepts in reservoir evaluation. Log Analyst 26:23–40
Wright HMN, Cashman KV, Gottesfeld EH, Roberts JJ (2009) Pore structure of volcanic clasts: measurements of permeability and electrical conductivity. Earth Planet Sci Lett 280:93–104
Wyllie M, Rose W (1950) Application of the Kozeny equation to consolidated porous media. Nature 165:972
Zhang X, Knackstedt MA (1995) Direct simulation of electrical and hydraulic tortuosity in porous solids. Geophys Res Lett 22(17):2333–2336
Zico A, Darwish M, Eweda S (1993) Late Cretaceous–Early Tertiary stratigraphy of the Themed area, East Central Sinai, Egypt. Neues Jahrbruch für Geologie und Paläontologie Monatshefte 3:135–149
Zinszner B, Pellerin FM (2007) A geoscientist’s guide to petrophysics. Trans. Jones, T. IFP, Editions Technip, Paris
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I would like to thank the reviewers for their great comments that improved and reconstructed the manuscript. Thanks are also due to the editor, Prof. El-Amri, whose patience and insightful suggestions have led to a concise revised version.
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Nabawy, B.S. Impacts of dolomitization on the petrophysical properties of El-Halal Formation, North Sinai, Egypt. Arab J Geosci 6, 359–373 (2013). https://doi.org/10.1007/s12517-011-0369-5
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DOI: https://doi.org/10.1007/s12517-011-0369-5