Management of the Balcova–Narlidere geothermal reservoir, Turkey

Aksoy, Niyazi; Serpen, Umran; Filiz, Şevki

doi:10.1016/j.geothermics.2007.12.003

Cited by 20 publications

(21 citation statements)

References 11 publications

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“…While variations in CO 2 / 3 He values and He contents were attributed to preferential degassing of He from geothermal waters, the principal controls on CO 2 contents and ı 13 C values seemed to be the interplay between CO 2 dissolution and calcite precipitation (de Leeuw et al, 2010). Geochemical anomalies likely related to seismic activity were recorded for two localities: on Table 3 Reservoir lithologies, physicochemical parameters and hydrogeochemical facies of geothermal fluids from western Anatolia where He-CO2 data are available (Data sources: Eriş en, 1976;Ş imş ek, 1984;Mutlu, 1998Mutlu, , 2007Mutlu and Güleç , 1998;Vengosh et al, 2002;Karamanderesi and Helvacı, 2003;Tarcan and Gemici, 2003;Serpen, 2004;Ş imş ek et al, 2005;Aksoy et al, 2008Aksoy et al, , 2009Baba et al, 2009;Süer, 2010;Wiersberg et al, 2011;Karakuş and ş 11imş ek, 2013 …”

Section: North Anatolian Fault Zone (Nafz)mentioning

confidence: 99%

Turkish geothermal fields as natural analogues of CO 2 storage sites: Gas geochemistry and implications for CO 2 trapping mechanisms

Güleç

Hilton

2016

Geothermics

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Section: North Anatolian Fault Zone (Nafz)mentioning

confidence: 99%

Turkish geothermal fields as natural analogues of CO 2 storage sites: Gas geochemistry and implications for CO 2 trapping mechanisms

Güleç

Hilton

2016

Geothermics

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“…Erdoğan and Güngör 1992). This quasi‐impervious unit is considered to be the main geothermal reservoir (Eşder & Şimşek 1977; Aksoy et al. 2008) and will therefore also be referred to as ‘the reservoir unit’.…”

Section: Datamentioning

confidence: 99%

“…(B) Temperature–depth profile of geothermal waters from several wells prior to exploitation (modified after Serpen 2004). The well locations are given in Aksoy et al. (2008).…”

Section: Datamentioning

confidence: 99%

Deep geothermal groundwater flow in the Seferihisar–Balçova area, Turkey: results from transient numerical simulations of coupled fluid flow and heat transport processes

et al. 2010

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The Seferihisar-Balç ova Geothermal system (SBG) is characterized by complex temperature and hydrochemical anomalies. Previous geophysical and hydrochemical investigations suggest that hydrothermal convection in the faulted areas of the SBG and recharge flow from the Horst may be responsible for the observed patterns. A numerical model of coupled fluid flow and heat transport processes has been built in order to study the possible fluid dynamics of deep geothermal groundwater flow in the SBG. The results support the hypothesis derived from interpreted data. The simulated scenarios provide a better understanding of the geophysical conditions under which the different fluid dynamics develop. When recharge processes are weak, the convective patterns in the faults can expand to surrounding reservoir units or below the seafloor. These fault-induced drag forces can cause natural seawater intrusion. In the Melange of the Seferihisar Horst, the regional flow is modified by buoyant-driven flow focused in the series of vertical faults. As a result, the main groundwater divide can shift. Sealing caprocks prevent fault-induced cells from being overwhelmed by vigorous regional flow. In this case, over-pressured, blind geothermal reservoirs form below the caprocks. Transient results showed that the front of rising hot waters in faults is unstable: the tip of the hydrothermal plumes can split and lead to periodical temperature oscillations. This phenomenon known as Taylor-Saffman fingering has been described in mid-ocean ridge hydrothermal systems. Our findings suggest that this type of thermal pulsing can also develop in active, faulted geothermal systems. To some extent, the role of an impervious fault core on the flow patterns has been investigated. Although it is not possible to reproduce basin-scale transport processes, this first attempt to model deep groundwater geothermal flow in the SBG qualitatively supported the interpreted data and described the different fluid dynamics of the basin.

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“…the Agamemnon Fault on the northern side of the Seferihisar Horst. The geothermal system is limited to the narrow, nearly vertical zone where the flysch deposits appear fragmented largely by faults (Serpen, 2004;Aksoy et al, 2008).…”

Section: Aegean Coastal Beltmentioning

confidence: 99%