Bayatçık geothermal field is located 7 km northwest of the Afyonkarahisar city center. In this region there are 10 wells drilled by AFJET (Afyon Geothermal Facility Tourism, Industry and Trade Joint Stock Company). 8 of them are used in production and 2 of them are used as reinjection wells. The wells, with a 65°C temperature and 35 l/s flow rate, are used for the 150.000 m2 greenhouse facility and another 250.000 m2 closed area is heating in Afyon Kocatepe University ANS Campus. The aim of this study is to determine the borehole geology and hydrothermal alteration mineralogy of Bayatçik-1 well which was drilled in 2013. The well is 925 meters deep. Units of alluvium, volcanic and sedimentary sections of the Köprülü volcanosedimanter sequence, basal conglomerate, marble and schist sections were cut. The cover rocks of the geothermal system consisting of volcanic and sedimentary rocks were cut in the first 528m. At depths of 528-558 m basal conglomerate was crossed. There are marble unit (Mrb1), which is the reservoir rock of the geothermal system at depths of 558-574 m, micaschist (Sch1) between 574-622 m, marble-2 between 622-746 m (Mrb2), micaschist-2 (Sch2) between 746-830 m, marble-3 between 830-890 m (Mrb3) and finally at depths of 890-920 m is a schist unit which acts as the impermeable basement rock of the system. Mineralogical and petrographic analyzes such as stereo microscope, polarizing microscope, x-ray diffractometer (XRD) and scanning electron microscope (SEM) were applied to the clastic samples taken at 2m intervals from Bayatçik-1 well. The result of the study is aimed to reveal the development of the geothermal system in the Bayatcık region by the differences in the hydrothermal alteration mineralogy of the samples.
Afyon Kocatepe Üniversitesi Bilimsel Araştırmalar Proje Koordinatörlüğü
18.KARİYER.171
This study was supported by Afyon Kocatepe University (BAPK, Scientific research projects coordination unit) Project number: 18.KARİYER.171. The authors thanks to AKU-BAPK for financal support.
Bayatçık jeotermal sahası Afyonkarahisar ilinin 7 km kuzeybatısında yer almaktadır. Bu çalışmanın amacı 2013 yılında açılan Bayatçik-1 kuyusunun kuyu içi jeolojisi ve hidrotermal alterasyon mineralojisini belirlemektir. 925 metre derinliğindeki sondaj boyunca; Köprülü volkanosedimanter istifinin alüvyon, volkanik ve sedimanter kısımları ile taban konglomerası, mermer ve şist birimleri kesilmiştir. İlk 528 m'de jeotermal sistemin örtü kayaları olan volkanik ve sedimanter kayalar, 528-558 m’lerde taban konglomerası, 558-574 m derinlikte Jeotermal sistemin rezervuar kayası olan mermer (Mrb1), 574-622 m arasında mikasşist (Sch1), 622-746 m arasında mermer-2 (Mrb2), 746-830 m arasında mikaşist-2 (Sch2), 830-890 m arasında mermer-3 (Mrb3) ve son olarak 890-920 m derinliklerde sistemin geçirimsiz temel kayası olan şist birimleri geçilmiştir. Bayatcık-1 kuyusundan 2m aralıklarla alınan klastik örneklere stereo ve polarize mikroskop, x-ışını difraktometre (XRD) ve tarama elektron mikroskobu (SEM) gibi analizler uygulanarak, Bayatcık bölgesindeki jeotermal sistemin gelişimini örneklerin hidrotermal alterasyon mineralojisindeki farklılıklar ile ortaya koymak amaçlanmıştır. Çalışmada 200oC’den düşük sıcaklıkta oluşan simektit, illit ve kaolinit minerallerinin varlığıyla ilgili mineralojik-petrografik verilere ulaşılmıştır.
18.KARİYER.171
Primary Language | English |
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Subjects | Engineering |
Journal Section | Articles |
Authors | |
Project Number | 18.KARİYER.171 |
Publication Date | September 25, 2020 |
Submission Date | March 22, 2020 |
Published in Issue | Year 2020 Volume: 20 Issue: 4 |