Abstract
The Kangan aquifer (KA) is located beneath the Kangan gas reservoir (KGR), 2,885 m below the ground surface. The gas reservoir formations are classified into nine non-gas reservoir units and eight gas reservoir units based on the porosity, water and gas saturation, lithology, and gas production potential using the logs of 36 production wells. The gas reservoir units are composed of limestone and dolomite, whereas the non-gas reservoir units consist of compacted limestone and dolomite, gypsum and shale. The lithology of KA is the same as KGR with a total dissolved solid of 333,000 mg/l. The source of aquifer water is evaporated seawater. The static pressure on the Gas–Water Contact (GWC) was 244 atm before gas production, but it has continuously decreased during 15 years of gas production, resulting in a 50 m uprising of the GWC and the expansion of KA water and intergranular water inside the gas reservoir. The general flow direction of the KA is toward the northern coast of the Persian Gulf due to the migration of water to the overlying formations via a trust fault. The KA is a gas-capped deep confined aquifer (GCDCA) with special characteristics differing from a shallow confined aquifer. The main characteristics of a GCDCA are unsaturated intergranular water below the confining layers, no direct contact of the water table (GWC) with the confining layers, no vertical flow via the cap rock, permanent uprising of the GWC during gas production, and permanent descend of GWC during water exploitation.
Similar content being viewed by others
References
Aali J, Rahimpour-Bonab H, Kamali MR (2006) Geochemistry and origin of the world’s largest gas field from Persian Gulf, Iran. J Petrol Sci Eng 50:161–175
Alavi M (2004) Regional Stratigraphy of the Zagros fold-thrust belt of Iran and its proforeland evolution. Am J Sci 304:1–20
Alavi M (2007) Structures of the Zagros fold-thrust belt in Iran. Am J Sci 307:1064–1095
Anfort SJ, Bachu S, Bentley LR (2001) Regional-scale hydrogeology of the upper Devonian–lower Cretaceous sedimentary succession, south-central Alberta basin, Canada. AAPG Bull 85:637–660
Bachu S (1995a) Synthesis and model of formation water flow in the Alberta basin, Canada. AAPG Bull 79:1159–1178
Bachu S (1995b) Flow of variable-density formation water in deep sloping aquifers: review of methods of representation with case studies. J Hydrol 164:19–39
Bachu S (1997) Flow of formation waters, aquifer characteristics, and their relation to hydrocarbon accumulations, northeastern Alberta basin. AAPG Bull 81:712–733
Bachu S, Hitchon B (1996) Regional scale flow of formation waters in the Wilinston basin. AAPG Bull 80:248–264
Bachu S, Michael K (2002) Flow of variable-density formation water in deep sloping aquifers: minimizing the error in representation and analysis when using hydraulic-head distributions. J Hydrol 259:49–65
Bachu S, Underschultz JR (1993) Hydrogeology of formation waters, northeastern Alberta basin. AAPG Bull 77:1745–1768
Bachu S, Bonijoly D, Bradshaw J, Burruss R, Holloway S, Christensen NP, Odd MM (2007) CO2 storage capacity estimation: methodology and gaps. Int J Greenh Gas Control 1:430–443
Bagheri R (2013) Hydrochemistry and sources of connate water in the Zagros aquifers (PhD dissertation). Shiraz University, Shiraz
Berg RR, Demis WD, Mitsdraffer AR (1994) Hydrodynamic effects on Mission Canyon (Mississippian) oil accumulations, Billing Nose area, North Dakota. AAPG Bull 78:501–518
Birkle P, Aragon JJR, Portugal E, Aguilar JLF (2002) Evolution and origin of deep reservoir water at the Active Luna oilfield, Gulf of Mexico, Mexico. AAPG Bull 86:457–484
Birkle P, García BM, Padrón CMM (2009) Origin and evolution of formation water at the Jujo-Tecominoacán oil reservoir, Gulf of Mexico. Part 1: chemical evolution and water–rock interaction. Appl Geochem 24:543–554
Bjørlykke K (1993) Fluid flow in sedimentary basins. Sediment Geol 86:137–158
Bordenave ML (2008) The origin of Permo–Triassic gas accumulations in the Iranian Zagros fold belt and contiguous offshore areas: a review of the Paleozoic petroleum system. J Petrol Geol 1:3–42
Boredenave ML, Hegre JA (2010) Current distribution of oil and gas fields in the Zagros fold belt of Iran and contiguous offshore as the result of the petroleum systems. Geol Soc Lond Special Publ 330:291–353
Carpenter AB (1978) Origin and chemical evolution of brines in sedimentary basins. Okla Geol Surv Circ 79:60–77
Chaudhry AU (2004) Oil well testing handbook. Elsevier Inc, London
Chiarelli A (1978) Hydrodynamic framework of eastern Algerian Sahara influence on hydrocarbon occurrence. AAPG Bull 62:667–685
Clayton RN, Friedmann I, Graf DL, Mayeda TK, Meents WF, Shimp NF (1966) The origin of saline formation waters. J Geophys Res 71:3869–3882
Corey AT (1977) Mechanics of heterogeneous fluids in porous media. Water Resources Publications, Fort Collins
Dahlberg EC (1995) Applied hydrodynamics in petroleum exploration, 2nd edn. Springer-Verlag, Berlin
De Lucia M, Bauer C, Beyer C, Kühn M, Nowak T, Pudlo D, Reitenbach V, Stadler S (2012) Modelling CO2-induced fluid–rock interactions in the Altensalzwedel gas reservoir. Part I: from experimental data to a reference geochemical model. Environ Earth Sci 67:563–572
Earlougher RC (1977) Advances in well test analysis (second printing). Society of Petroleum Engineers of AIME, USA
Ehrenberg SN, Nadeau PH, Aqrawi AAM (2007) A comparison of Khuff and Arab reservoir potential throughout the Middle East. AAPG Bull 91:275–286
Falcon NL (1969) Problems of the relationship between surface structure and deep displacements illustrated by the Zagros range. Geol Soc Lond Special Publ 3:9–21
Falcon NL (1974) Southern Iran, Zagros Mountains. In: Spencer AM (ed) Mesozoic–Cenozoic orogenic belts, vol 4. Geological Society of London Special Publication, London, pp 199–211
Fontes JC, Matray JM (1993) Geochemistry and origin of formation brines from the Paris Basin, France, 1. Brines associated with Triassic salts. Chem Geol 109:149–175
Ghavidel-Syooki M (2003) Palynostratigraphy of Devonian sediments in the Zagros Basin, southern Iran. Rev Palaeobot Palynol 127:241–268
Hou Z, Wundram L, Meyer R, Schmidt M, Schmitz S, Were P (2012) Development of a long-term wellbore sealing concept based on numerical simulations and in situ-testing in the Altmark natural gas field. Environ Earth Sci 67:395–409
Hubert MK (1953) Entrapment of petroleum under hydrodynamic conditions. AAPG Bull 37:1954–2026
Insalaco E, Virgone A, Courme B, Gaillot J, Kamali M, Moallemi A, Lotfpour M, Monibi S (2006) Upper Dalan Member and Kangan Formation between the Zagros Mountains and offshore Fars, Iran: depositional system, biostratigraphy and stratigraphic architecture. GeoArabia 11:75–176
James GA, Wynd JG (1965) Stratigraphic nomenclature of Iranian oil consortium agreements area. AAPG Bull 46:2182–2245
Jolley SJ, Barr D, Walsh JJ, Knipe RJ (2007) Structurally complex reservoirs: an introduction. Geol Soc Lond Special Publ 292:1–24
Kent PE (1958) Recent studies of south Persian salt plugs. AAPG Bull 422:2951–2972
Kent PE (1979) The emergent Hormuz salt plugs of southern Iran. J Petrol Geol 2:117–144
Khan DK, Rostron BJ (2004) Regional hydrogeological investigation around the IEA Weyburn CO2 monitoring and storage project site. In: Rubin ES, Keith DW, Gilboy CF (eds) Proceedings of the 7th international conference on greenhouse gas control technologies (GHGT-7), vol 1, Vancouver
Kharaka YK, Hanor JS (2004) Deep fluids in the continents: I. Sedimentary basins. In: Drever JI (ed) Treatise in geochemistry, vol 5. Elsevier, London, pp 499–540
Knauth LP, Beeunas MA (1986) Isotope geochemistry of fluid inclusions in Permian halite with implications for the isotopic history of ocean water and the origin of saline formation waters. Geochim Cosmochim AC 50:419–433
Knipe RJ, Jones J, Fisher QJ (1998) Faulting, fault sealing and fluid flow in hydrocarbon reservoirs: an introduction. Geol Soc Lond Special Publ 147:7–21
Mahmoud MD, Vaslet D, Husseini MI (1992) The Lower Silurian Qalibah Formation of Saudi Arabia: an important hydrocarbon source rock. AAPG Bull 76:1491–1506
Miliaresis GC (2001) Geomorphometric mapping of Zagros ranges at regional scale. Comput Geosci 27:775–786
Motiei H (1993) Stratigraphy of Zagros. In: Hushmandzadeh A (ed) Treatise on the geology of Iran. Geological Survey of Iran, Iran
Muggeride A, Mahmode H (2012) Hydrodynamic aquifer or reservoir compartmentalization. AAPG Bull 96:315–336
Najafi M (2009) Structural evidences of Nezamabad fault effects on the Zagros fold-trust belt front. In: 11th annual meeting of Iran geological association, Theran (in Persian)
National Iranian Oil Company report (2007a) Final reservoir engineering report of Varavi gas field (unpublished report, in Persian)
National Iranian Oil Company report (2007b) Updating simulation model of Nar gasfield (unpublished report, in Persian)
National Iranian Oil Company report (2007c) Hydrodynamic study of Homa–Shanul–Varavi gas fields (unpublished report, in Persian)
National Iranian Oil Company report (2009a) Reservoir layering of Kangan gas field (unpublished report, in Persian)
National Iranian Oil Company report (2009b) Basic reservoir engineering of Kangan gasfield (unpublished report, in Persian)
National Iranian Oil Company report (2009c) Regional geology of north eastern part of Kangan Anticline (unpublished report, in Persian)
Novak K, Malvić T, Simon K (2013) Increased hydrocarbon recovery and CO2 management, a Croatian example. Environ Earth Sci 68:1187–1197
Pelissier J, Hedayat AA, Abgrall E, Plique J (1980) Study of hydrodynamic activity in the Mishrif fields of offshore Iran. J Petrol Technol 32:1043–1052
Raeisi E (2008) Ground-water storage calculation in Karst aquifers with alluvium or no-flow boundaries. J Cave Karst Stud 70:62–70
Rahimpour-Bonab H, Esrafili-Dizaji B, Tavakoli V (2010) Dolomitization and anhydrite precipitation in Permo–Triasic carbonates at the South Pars gasfield, offshore Iran; controls on reservoir quality. J Petrol Geol 33:43–66
Saripalli KP, McGrail BP, White MD (2001) Modeling the sequestration of CO2 in deep geological formations. First national conference on carbon sequestration, NETL, the Energy lab publication, USA
Seggie RJ, Ainsworth RB, Johnson DA, Koninx JPM, Spaargaren B, Stephenson PM (2000) Awakening of a sleeping giant: troubadour gas condensate field. APPEA J 40:417–435
Sharland PR, Archer R, Casey DM, Davies RB, Hall SH, Heward AP, Horbury AD, Simmons MD (2001) Arabian plate sequence stratigraphy. GeoArabia Special Publ 2:371
Stocklin J (1968) Structural history and tectonics of Iran: a review. AAPG Bull 52:1229–1258
Stocklin J, Setudehnia A (1977) Stratigraphic Lexicon of Iran. Geological Survey of Iran, Tehran
Szabo F, Kheradpir A (1978) Permian and Triassic stratigraphy, Zagros Basin, south-west Iran. J Petrol Geol 1:57–82
Talbot CJ (1979) Fold trains in a glacier of salt in southern Iran. J Struct Geol 1:5–18
Talbot CJ, Jarvis RJ (1984) Age, budget and dynamics of an active salt extrusion in Iran. J Struct Geol 6:521–533
Tozer RSJ, Borthwick AM (2010) Variation in fluid contacts in the Azeri field, Azerbaijan: sealing faults or hydrodynamic aquifer. Geol Soc Lond Special Publ 347:103–111
Villegas ME, Bachu S, Ramon JC, Underschultz JR (1994) Flow of formation waters in the Ceraceous-Miocene succession of the Llanos Basin, Colombia. AAPG Bull 78:1843–1862
Wells PRA (1988) Hydrodynamic trapping in the Cretaceous Nahr Umr lower sand of the north area, offshore Qatar. J Petrol Technol 40:357–367
Whitson CH, Kuntadi A (2005) Khuff gas condensate development, IPTC 10692-MS. International Petroleum Technology Conference, Doha
Yang F, Bai B, Dunn-Norman S (2011) Modeling the effects of completion techniques and formation heterogeneity on CO2 sequestration in shallow and deep saline aquifers. Environ Earth Sci 64:841–849
Acknowledgments
The authors extend their appreciation to the South Zagros Oil and Gas Company of Iran for the financial support of this study. The authors also thank A. Montaseri, M. Mirbagheri, H.R. Nasriani, Sh. Karimi and A.A. Nikandish, all from the South Zagros Oil and Gas Company, and Dr. A. Shariati and M. Escrochi from Shiraz University for their assistance in data acquisition, field work and extensive discussions on the characteristics of the Kangan Gas Reservoir. The authors also thank the Research Council of Shiraz University for continuous support during this investigation.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Nadri, A., Bagheri, R., Raeisi, E. et al. Hydrodynamic behavior of Kangan gas-capped deep confined aquifer in Iran. Environ Earth Sci 71, 1925–1936 (2014). https://doi.org/10.1007/s12665-013-2596-4
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s12665-013-2596-4