Numerical modeling of Kızıldere geothermal field

Download
2007
Özkaya, Melike
This research is dedicated to make a foreseeing of the future state of the Kızıldere Geothermal Field in order to suggest acceptable solutions to the current problems. The non-isothermal mechanism of the geothermal field is simulated for the pressure and temperature variables. For this purpose, a finite element model (696 four-nodal elements with 750 nodes) of the field is formulated by considering the geological conditions and the present wells already drilled in the area. Then the model is calibrated to the field for the natural state by using appropriate physical properties, boundary and initial conditions. Comparison of the simulated and the observed pressures and temperatures has emphasized a very successful calibration study. After the calibration, response of the field to the production and injection for the period of 1984-2006 has been simulated by applying a history matching study. History matching runs have yielded very good correlations between the observed and the computed values of the pressure and temperature variables. The calibrated and history matched model has been applied to the field to simulate the future performance of the field for different production and injection scenarios. In the first scenario the field is simulated for the next 10-year production period keeping the on-going production conditions. Then, the influence of the production of two new wells has been investigated in two different scenarios. In the forth scenario, the effect of injection from one of the production wells has been simulated.

Suggestions

Numerical modeling of Kızıldere geothermal field
Özkaya, Melike; Karahanoğlu, Nurkan; Department of Geological Engineering (2007)
This research is dedicated to make a foreseeing of the future state of the Kızıldere Geothermal Field in order to suggest acceptable solutions to the current problems. The non-isothermal mechanism of the geothermal field is simulated for the pressure and temperature variables. For this purpose, a finite element model (696 four-nodal elements with 750 nodes) of the field is formulated by considering the geological conditions and the present wells already drilled in the area. Then the model is calibrated to t...
Numerical modeling of Edremit geothermal field
Günay, Emre; Karahanoğlu, Nurkan; Department of Geological Engineering (2012)
The purpose of this study is to examine the geothermal potential, sustainability, and reinjection possibility of Edremit geothermal field. In order to investigate this, a numerical model consisting of a hot and cold water aquifer system is established. A two dimensional cross sectional model is set to simulate this geothermal system. Different pressure and temperature values are applied to the nodes at the boundaries to perform a steady state calibration which minimizes the computed results and observed val...
Morphological analyses in Hattusha (Boğazkale-Turkey)
Dündar, Pınar; Toprak, Vedat; Department of Geological Engineering (2009)
The purpose of this study is to investigate the morphological properties of the ancient city Hattusha and its surroundings. To achieve this, the analyses are conducted on the digital topographical maps at 1/25000 and 1/1000 scales. Results of the analyses reveal that Hattusha is located over a north facing surface with slope values of 6 to 15 degrees within an elevation range of 1000 to 1250 m. All main building complexes are confined to a narrow slope interval of 2 to 15 degrees. Five regions are detected ...
Determination of the dynamic characteristics and local site conditions of the plio-quarternary sediments situated towards the north of Ankara through surface wave testing methods
Eker, Arif Mert; Akgün, Haluk; Department of Geological Engineering (2009)
The purpose of this study is to assess the engineering geological and geotechnical characteristics and to perform seismic hazard studies of the Upper Pliocene to Quaternary (Plio-Quaternary) deposits located towards the north of Ankara through surface wave testing methods. Based on a general engineering geological and seismic site characterization studies, site classification systems are assigned in seismic hazard assessments. The objective of the research is to determine the regional and local seismic soil...
Reinjection Optimization of Kızıldere Geothermal Field for Sustainable Reservoir Pressure Management
KÜÇÜK, SERHAT; başer, ali; saraçoğlu, önder; şentürk, erdinç; tüzen, mahmut kaan; Akın, Serhat (2021-10-01)
Pressure decline with respect to time is one of the main concerns in geothermal field management. In order to maintain the reservoir pressure, a sustainable reinjection strategy is needed. In this study, a numerical model of Kızıldere Geothermal Field is constructed, which is then used to assess the current shallow reinjection/deep production strategy. According to the output of the numerical simulation, a new reinjection strategy is proposed. It has shown that more sustainable and reliable reinjection stra...
Citation Formats
M. Özkaya, “Numerical modeling of Kızıldere geothermal field,” M.S. - Master of Science, Middle East Technical University, 2007.