Petrol ve Doğal Gaz Mühendisliği

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http://hdl.handle.net/11527/24908

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Konu "geothermal engineering" ile Petrol ve Doğal Gaz Mühendisliği'a göz atma
  • Öge
    Assessment of geothermal power potential in Buyuk Menderes Basin, Turkey
    (Elsevier, 2020) Yamanlar, Şenol, ; Korkmaz Başel, Emine Didem ; Serpen, Ümran ; https://orcid.org/0000-0001-7713-9551 ; Petroleum and Natural Gas Engineering Department
    Turkey’s installed geothermal capacity for power generation as of December 2019 is 1500 MWe. Most of this installed capacity is generated by the power plants located in the Buyuk Menderes graben. Geologically Buyuk Menderes graben is a huge structure having several discovered geothermal resources and can be considered as a geothermal basin. The aim of this study is to estimate the geothermal power potential of Buyuk Menderes graben. To achieve this object, a stochastic methodology, which is used to evaluate hydrocarbon-bearing basins, is adapted from the oil and natural gas industry. This methodology provides a way to quantify the geothermal potential in a range of possible values by evaluating the individual fields in the basin using stored heat technique. A total of 34 (21 proven and 13 probable occurrences) geothermal fields having medium to high temperature (T ≥ 100 °C) values are evaluated using the Monte Carlo Simulation technique. In these simulations, available geological, geochemical, geophysical data are used along with the data obtained from the drilled wells in the region. The power potential (MWe) values for 21 proven fields in terms of P10, P50 and P90 values are determined to be 888, 1077 and 1311 MWe, respectively. Considering the 13 probable occurrences along with the proven fields, the lower and upper limits of the total power potential (P10 and P90) are 1156 and 1580 MWe, respectively. Moreover, the power potentials are also evaluated under the presence of uncertainty. By assigning 5/13, 6/13, and 7/13 probability values for the 13 probable occurrences, overall geothermal power potential P10 values are estimated as 1041, 1075, and 1101 MWe, respectively.
  • Öge
    Assessment of geothermal power potential in the Gediz Basin, Turkey
    (Elsevier, 2022) Serpen, Umran ; Çobanoğlu, Melih ; Korkmaz, E. Didem ; Demirkıran, Zülfü ; Kılınç, Gizem ; https://orcid.org/0000-0001-7713-9551 ; Petroleum and Natural Gas Engineering Department
    By the end of 2020, the installed geothermal power capacity in Turkey reached 1643 MWe. Approximately one-fifth of the capacity of the installed power plants is located at the Gediz graben, which is geologically the second largest structure of the Menderes Massif. The Gediz graben has several geothermal surface manifestations and geothermal resources that have been discovered. When considering the structural/geological similarities between the Buyuk Menderes and the Gediz graben, both regions can be assessed as geothermal basins. The scope of this study is to estimate the geothermal power potential of the Gediz graben. To achieve this, a different stochastic approach is used rather than the conventional geothermal resource assessment. This approach involves using temperature depended volume distributions obtained from drilled wells, which lead to improved and solid results. Three hot anomalies that are identified from temperature dependent volumes are evaluated using the Monte Carlo Simulation technique. In these simulations, distribution data of other parameters are used along with data obtained from the drilled wells in the region. The power potential (MWe) values for three identified anomalies in terms of P10, P50 and P90 values are estimated to be 825, 1157 and 1524 MWe, respectively. Furthermore, additional geothermal potential discovery is predicted in the graben, provided that extensive efforts are exerted. Keywords: Menderes Massif; Gediz graben; Resource assessment; Geothermal basin assessment; Geothermal power potential estimation; Turkey
  • Öge
    Geothermal boom in Turkey : growth in identified capacities and potentials
    (Elsevier, 2014) Korkmaz, E. D. ; Serpen, U. ; Satman, A. ; https://orcid.org/0000-0001-7713-9551 ; Petroleum and Natural Gas Engineering Department
    Increasing activities of geothermal development especially in the last three years result in a geothermal boom in Turkey. Not only the addition of new sites, but also updating the data of existing ones increased the currently identified capacity significantly. With the discoveries of 13 new geothermal fields, power potentials increased by 1.6 times. This study deals with hydrothermal and EGS potentials of Turkey. The geothermal resource base between 0 and 3 km depth in Turkey and the capacity of the currently identified 290 geothermal sites are determined to be 3.96 × 1023 J and 10,576 MWt, respectively. As of today, a total of 135 hydrothermal fields were individually studied, of which 38 medium to high temperature (T ≥ 100 °C) fields were simulated to estimate the power generation. The remaining 97 fields were simulated to estimate the direct use potentials. The lower and upper limits of power generation potential corresponding to P10 and P90 values are 1673 and 3140 MWe, respectively. Moreover, the lower and upper thermal potential limits of 135 hydrothermal fields corresponding to P10 and P90 values are 38.2 and 68.4 GWt, respectively.
  • Öge
    Geothermal energy in Turkey: 2008 update
    (Elsevier, 2009) Serpen, Ümran ; Aksoy, Niyazi ; Öngür, Tahir ; Korkmaz Başel, Emine Didem ; https://orcid.org/0000-0001-7713-9551 ; Petroleum and Natural Gas Engineering Department
    Geological studies indicate that the most important geothermal systems of western Turkey are located in the major grabens of the Menderes Metamorphic Massif, while those that are associated with local volcanism are more common in the central and eastern parts of the country. The present (2008) installed geothermal power generation capacity in Turkey is about 32.65 MWe, while that of direct use projects is around 795 MWt. Eleven major, high-to-medium enthalpy fields in western part of the country have 570 MWe of proven, 905 MWe of probable and 1389 MWe of possible geothermal reserves for power generation. In spite of the complex legal issues related to the development of Turkey's geothermal resources, their use is expected to increase in the future, particularly for electricity generation and for greenhouse heating.