Numerical reservoir simulation of Alaşehir geothermal field

Download
2020-02-10
Aydın, Hakkı
Akın, Serhat
Use of a comprehensive reservoir simulation is essential for an effective geothermal reservoir management. TOUGH2 has become a widely used simulator for this purpose. In this study, one of the most exploited geothermal fields in Turkey, Alaşehir geothermal field has been modeled by using TOUGH2 reservoir simulator. The study includes more than 100 wells, which are operated by 7 different developers. The total installed capacity of geothermal power plants in the field is 212 MWe, but additional capacity (98 MWe) is planned to be commissioned by the end of 2020. The proximity of licensed areas and strong well interferences have made the simulation necessary for a successful reservoir management. Different data sources including pressure transient tests, reservoir monitoring and tracer test data were coupled to construct a large numerical model, which has dimensions of 18 kmx12kmx5.5km. During model calibration, good matches were obtained between model results and actual decline in the reservoir temperature, pressure and noncondensable gases (NCG) production. The effect of planned power plants on the field performance is studied by performing scenario runs using maximum possible flow rates. Model results indicated that commissioning of new power plants and additional make up wells that will compensate missing production accelerates pressure decline to more than 3 bars/year.
Workshop on Geothermal Reservoir Engineering, (10 - 12 Şubat 2020)

Suggestions

Numerical modelling of reinforced concrete pressure tunnels using the overlapping lattice method
Işık, Gökberk; Tuncay, Kağan; Department of Earthquake Studies (2019)
Pressure tunnels transmit water from the reservoir to the turbines of hydroelectric power plants. The computational studies conducted to understand the behavior and shed light on the design guides of pressure tunnels were scarcely validated with experimental data as experimental work on pressure tunnels is very limited. Recent experimental studies on reinforced concrete pressure tunnels carried out at Middle East Technical University (METU), for the first time, allow computational models to be validated wit...
CO2 Decline in Alaşehir (Turkey) Geothermal Reservoir
Akın, Serhat; Aydın, Hakkı; AKIN, TAYLAN (2021-10-01)
Reinjection of gas free of brine into the peripheries of a geothermal reservoir may gradually decline non-condensable gas (NCG) concentration in the reservoir fluid during the operation of geothermal power plants. As a result, gradually decreasing gas emissions can be observed. In this study, we use separator data to calculate produced CO2 amount in the reservoir fluid. The data used is from the Alaşehir geothermal area that is certainly not the one and only target for geothermal production in Turkey. Data ...
Seismic Performance Evaluation of Concrete Gravity Dams by Using Pseudo Dynamic Testing and Simulations
Aldemir, Alper; Binici, Barış (null; 2017-11-24)
Dams are one of the mostimportantinfrastructure components servingfor water storage and energyproduction.Experimental studies on the seismic response of concrete gravity dams are scarce due to the complications regarding thelargescaleof dams and their interaction with the reservoir. This study presents the results of recent novel pseudo-dynamic dam tests (PSD) along with the nonlinear finite element simulations of the specimens. The test specimens were 1/75 scaled version of the highest ...
Numerical simulation of germencik geothermal field
Hamendi, Ahmed; Parlaktuna, Mahmut; Department of Petroleum and Natural Gas Engineering (2009)
The Germencik Omerbeyli geothermal field is considered to be one of the most important geothermal fields in Turkey. A numerical modeling study was carried out to simulate the response of the field to different production/injection scenarios. The reservoir performance evaluation was based on the numerical simulation of the reservoir behavior using the simulation code TOUGH2. The numerical simulation model includes a total area of 85.8 km2 and extends from the surface at +330 m msl (mean sea level) to a depth...
Modeling natural attenuation of petroleum hydrocarbons (btex) in heterogeneous aquifers
Uçankuş, Tuğba; Ünlü, Kahraman; Department of Environmental Engineering (2005)
Natural Attenuation can be an effective cleanup option for remediation of Groundwater contamination by BTEX. One of the important aspects of the methodology that has been recognized recently is that mass removal rates, the most important parameters used to determine effectiveness of the methodology, is controlled by groundwater flow regime, which to a large extent controlled by aquifer heterogeneity. Considering this recognition, the primary objective of this research is to quantitatively describe the relat...
Citation Formats
H. Aydın and S. Akın, “Numerical reservoir simulation of Alaşehir geothermal field,” Stanford, California, USA, 2020, vol. 45, p. 1, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/77223.