Abstract
Bangestan Reservoir in Ahvaz Oil Field is one of the important carbonate reservoirs in Dezful Embayment in the southwest of Iran. This reservoir consists of Sarvak and Ilam formations. Core samples were used to study microfacies and to determine the relationship between microfacies and reservoir potential of Ahwaz oil field. To highlight pores and throats, Blue Dye Epoxy was injected. According to petrographic study, 10 microfacies and 8 types of porosity were recognized. Our observation suggests a significant relationship between pore types and pore sizes to porethroats. The relationship between petrographic porosity and laboratory measurement of porosity was also investigated, that pores had undergone more porosity. Correlation coefficient of petrographic porosity with that of laboratory measurement porosity was calculated and poor correlation was found. The reason for this was the elimination of pores smaller than 1 μm by the petrographic analysis software and the elimination of extremely small pores (0.005 μm) in the helium injection method. Correlation in grainstone and packstone microfacies was stronger. In analyzing the relationship between throats and pores to microfacies, no significant relationship was observed, because of the intensity of diagenetic processes and destruction of the primary sedimentary texture. Generally, it was found the pore classification can be used in studies on pore sizes, flow units, and even rock types. Because of the significant relationship between pore types and pore-throat sizes, and finally because of the direct relationship of these sizes to petrophysical properties (porosity, permeability, and capillary pressure)
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Adams, A.E. and Mackenzie, W.S., 1998, Carbonate Sediments and Rocks under the Microscope. Manson Publishing Ltd., London, 180 p.
Afghah, M. and Fadaei, H.R., 2015, Biostratigraphy of Cenomanian succession in Zagros area (South West of Iran). Geosciences Journal, 19, 257–271.
Ahr, W.M., 2008a, A new genetic classification of carbonate porosity and its application to reservoir characterization. American Association of Petroleum Geology Annual convention (Abstract), San Antonio, Apr. 20–23, p. 20–23.
Ahr, W.M., 2008b, Geology of Carbonate Reservoirs: the Identification, Description and Characterization of Hydrocarbon Reservoirs in Carbonate Rocks. John Wiley & Sons Inc., Hoboken, 277 p.
Ahr, W.M., Allen, D., Boyd, A., Bachman, H.N., Smithson, T., Clerke, E.A., Gzara, K.B.M., Hassall, J.K., Murty, C.R.K., Zubari, H., and Ramamoorthy, R., 2005, Confronting the carbonate conundrum. Schlumberger Oilfield Review, 17, 18–29.
Alavi, M., 1994, Tectonic of Zagros Orogenic Belt of Iran: new data and interpretations. Tectonophysics, 229, 211–238.
Alavi, M., 2004, Regional stratigraphy of the Zagros fold-thrust belt of Iran and its proforeland evolution. American Journal of Science, 304, 1–20.
Anselmetti, F.S., Luthi, S., and Eberli, G.P., 1998, Quantitative characterization of carbonate pore systems by digital image analysis. American Association of Petroleum Geologist Bulletin, 82, 1815–1836.
Cerepi, A., Humbert, L., and Burlot, R., 2001, Petrophysical properties of porous medium from petrographic image analysis data. Colloids and Surfaces A: Physicochemical and Engineering Aspects. 187–188, 233–256.
Dicus, C.H., 2007, Relationship between pore geometry, measured by petrographic Image analysis, and pore throat geometry calculated from capillary pressure, as a means to predict reservoir performance in secondary recovery programs for carbonate reservoir. Master Thesis, Texas A & M University, College Station, 122 p.
Dunham, R.J., 1962, Classification of carbonate rocks according to depositional texture. In: Ham, W.E. (ed.), Classification of Carbonate Rocks. American association of Petroleum Geologists Memoir, 1, p. 108–121.
Esrafili-Dizaji, B., Rahimpour-Bonab, H., Mehrabi, H., Afshin, S., Kiani Harchegani, F., and Shahverdi, N., 2015, Characterization of rudistdominated units as potential reservoirs in the middle Cretaceous Sarvak Formation, SW Iran. Facies, 61, 14.
Falcon, N.L., 1974, Southern Iran: Zagros Mountains. In: Spencer, A. (ed.), Mesozoic–Cenozoic Orogenic Belts: Data for Orogenic Studies: Alpine-Himalayan Orogens. Geological Society of London, Special Publications, 4, p. 199–211.
Flugel, E., 2010, Microfacies of Carbonate Rocks, Analysis, Interpretation and Application. Springer-Verlag, Berlin, 976 p.
James, G.A. and Wynd, J.G., 1965, Stratigraphic nomenclature of Iranian oil consortium Agreement area. American Association of Petroleum Geologist Bulletin, 49, 2182–2245.
Kim, Y.H.G., Rhee, C.W., Woo, J., and Park, T.Y.S., 2014, Depositional systems of the Lower Ordovician Mungok Formation in Yeongwol, Korea: implications for the carbonate ramp facies development. Geosciences Journal, 18, 397–417.
Layman, J. and Ahr, W., 2005, Rapid identification and ranking of reservoir flow units, Happy Spraberry field, Garza County, Texas. American Association of Petroleum Geologists, International Conference & Exhibition (Expanded Abstract), Cancun, October, p. 1–7.
Lonoy, A., 2006, Making sense of carbonate pore system. American Association of Petroleum Geologist Bulletin, 90, 1381–1405.
Lucia, F., 1995, Rock-fabric/petrophysical classification of carbonate pore space for reservoir characterization. American Association of Petroleum Geologist Bulletin, 79, 1275–1300.
Lucia, F., 2007, Carbonate Reservoir Characterization: An Integrated Approach. Springer-Verlag, Berlin, 336 p.
Motiei, H., 1992, Stratigraphy of Iran, Zagros stratigraphy. Geology and Mineral exploration Organization, 583 p. (in Persian with English Introduction)
Rahimpour-Bonab, H., Mehrabi, H., Navidtalab, A., and Izadi-Mazidi, M., 2012, Flow unit distribution and reservoir modeling in cretaceous carbonate of the Sarvak formation, Abteymour Oil Field, Dezful Embayment, South West Iran. Journal of Petroleum Geology, 3, 213–236.
Soleimani, B., Bahadori, A., and Meng, F., 2013, Microbiostratigraphy, microfacies and sequence stratigraphy of upper cretaceous and Paleogene sediments, Hendijan oilfield, Northwest of Persian Gulf, Iran. Natural Sciences, 5, 1165–1182.
Stoecklin, J., 1968, Structural history and tectonics of Iran, A review. American Association Petroleum Geologists bulletin, 52, 1229–1258.
Taghavi, A.A., Mork, A., and Emadi, M.A., 2006, Sequence stratigraphically controlled diagenesis governs reservoir quality in the carbonate Dehluran Field, southwest Iran. EAGE/Geological Society of London, Petroleum Geoscience, 12, 115–126.
Tonietto, S., Shane, E., Ahr, W.M., and Pope, M., 2012, Pore type characterization and petrophysical properties on microbial carbonate reservoirs. American Association of Petroleum Geologists Bulletin, Hedberg Conference on Microbial Carbonate Reservoir Characterization (Abstract), Houston, Jun. 3–8.
Tucker, M.E. and Wright, V.P., 1990, Carbonate Sedimentology. Blackwell Scientific Publication, Oxfored, 482 p.
Zamanzadeh, S.M., Amini, A., and Ghavisel-Syooki, M., 2009, Sequence stratigraphic controls on early-diagenetic carbonate cementation of shallow marine clastic sediments (the Devonian Zakeen Formation, southern Zagros, Iran). Geosciences Journal, 13, 31–57.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Reza, M.M. The Assessment of microfacies and reservoir potential relationship (porosity and pore size) of the Sarvak Formation in SW Iran. Geosci J 22, 793–805 (2018). https://doi.org/10.1007/s12303-017-0084-7
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s12303-017-0084-7