EGU22-8257, updated on 28 Mar 2022
EGU General Assembly 2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Injection of geothermal gases at the Kızıldere field: A pre-injection overview

Taylan Akın1,2, Selçuk Erol2, Serhat Akın2, Erdinç Şentürk3, and Raziye Şengün Çetin3
Taylan Akın et al.
  • 1Geothermal Application and Research Center, Pamukkale University, Denizli, Turkey (
  • 2Departmen of Petroleum and Natural Gas Engineering, METU, Ankara, Turkey
  • 3Zorlu Energy, Turkey

Emissions of greenhouse gases such as CO2 emitted at Turkish geothermal power plants are an obstacle to accepting geothermal energy as green power. However, recent advances in carbon capture and storage technologies have enabled low emissions by re-injecting produced CO2. Carbfix is one of the recent projects where geothermal gases are re-injected into the reservoir. In the Carbfix project, waste gases from Hellisheidi Power Plant are dissolved in effluent water and gas-charged fluid is injected into the basaltic subsurface where some portion of the gases precipitate as minerals. To understand whether the Carbfix methodology can be a standard application for the geothermal industry worldwide, an international research project called Geothermal Emission Control (GECO) was started in 2018. GECO is funded by the EU through the H2020, and the project consortium is consisting of 18 partners from 9 countries across Europe.

GECO aims to develop near-zero-emission geothermal power plants in four sites by providing clean geothermal energy at a lower cost. Kızıldere (Turkey) geothermal field (KGF) is one of the demonstration sites in the project where emission gases are injected into Menderes Metamorphic units. Zorlu Energy and METU are partners of the project from Turkey, and they operate the demonstration and monitoring of CO2 injection in KGF. We present here a geological overview of the Kızıldere injection site, baseline monitoring studies, fluid chemistry of the reservoir, and the predicted chemistry of the gas-charged fluid at the site. Moreover, geochemical simulation conducted for predicting fluid-rock interaction taking place in the geological formation is being assessed.

This work was done in the framework of the GECO Project, funded by the European Union’s Horizon 2020 research and innovation program under grant agreement No. 818169.

How to cite: Akın, T., Erol, S., Akın, S., Şentürk, E., and Şengün Çetin, R.: Injection of geothermal gases at the Kızıldere field: A pre-injection overview, EGU General Assembly 2022, Vienna, Austria, 23–27 May 2022, EGU22-8257,, 2022.