Carbon dioxide injection field pilot in umurlu geothermal field, Turkey

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Yücetaş İ., Ergiçay N., Akın S.

Geothermal Resources Council 2018 Annual Meeting: Geothermal's Role in Today's Energy Market, GRC 2018, Nevada, United States Of America, 14 - 17 October 2018, vol.42, pp.2285-2291 identifier

  • Publication Type: Conference Paper / Full Text
  • Volume: 42
  • City: Nevada
  • Country: United States Of America
  • Page Numbers: pp.2285-2291


The Umurlu geothermal reservoir located in Buyuk Menderes Graben, Turkey initially contained around 2% by weight CO_2 dissolved in geothermal reservoir fluid. The produced CO_2 rate declined over one year of production time due to dilution of reservoir gas by degassed injectate. Since CO_2 has a considerable role on Umurlu reservoir performance and energy production, produced non-condensable gas (NCG) has been injected simultaneously with colder degassed injectate from an injection well for the last two months. Produced CO_2 monitored in some production wells showed a marked increase as a result of continuous injection. Apart from reducing CO_2 emissions, it has been observed that CO_2 has a profound effect on the behavior of reservoir pressure around these production wells.