| Title | Recent Expansions of Power Plants in Guris Concession in the Germencik Geothermal Field, Turkey |
|---|---|
| Authors | Omer Inanc TUREYEN, Abdullah GULGOR, Bayram ERKAN, Abdurrahman SATMAN |
| Year | 2016 |
| Conference | Stanford Geothermal Workshop |
| Keywords | Germencik, Guris concession, power plants, power potential, Turkey |
| Abstract | The Germencik geothermal field is located in the western part of the Buyuk Menderes Graben (Western Anatolia). The field was discovered in 1967. It is a liquid dominated reservoir, with reservoir temperatures up to 276 oC, whose main feature is the high CO2 content about 2.1% by weight. GURIS Construction and Engineering Co. Inc. became the operator of the field and constructed a 47.4 MWe double-flash power plant in 2009. The early production performance of the field indicated a great potential for further developments. The electrical generation potential of the GURIS lease (which is around 36 km2) was initially estimated to be about 200 MWe based on a volumetric resource assessment. Data obtained from about 70 wells drilled in the Guris lease since 2009 have indicated the existence of the 200 MWe and possibly more generation potential. Compilation of data related to geology, geochemistry, drilling and well test results, detailed production and injection histories-rates, wellhead pressures and temperatures of the active production and injection wells, and downhole pressure-monitoring data was succeeded and integrated to form the conceptual model of the field underlying the GURIS concession area. Our in-house lumped parameter model is utilized to model the production rate-reservoir pressure history and an almost perfect match is obtained. Four power plants have been recently installed in the concession area and producing electricity; Efe-2, Efe-3 and Efe-4 each with 22.5 MWe capacity and Efe-1 with 47.4 MWe capacity. The total capacity has already reached to 162.3 MWe. GURIS intends to develop the field and to extend the power plant capacity in the near future up to 232 MWe. Results obtained on assessment of the energy production potential of geothermal resources within the GURIS’s area in Germencik, mainly through production performance and reservoir modelling, and of the feasibility of continued and increased production are discussed in this paper. |