Organic Geochemical Investigations and Hydrocarbon Production Potentials of the Eocene Aged Çeltek Formation in the Çeltek (Amasya) and Sorgun (Yozgat) Fields Eosen Yaşlı Çeltek Formasyonunun Çeltek (Amasya) ve Sorgun (Yozgat) Sahalarındaki Organik Jeokimyasal İncelemeleri ve Hidrokarbon Üretme Potansiyelleri

Erdoğan E., SARI A., Murat A.

Yerbilimleri/ Earth Sciences, cilt.45, sa.2, ss.133-153, 2024 (Scopus) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 45 Sayı: 2
  • Basım Tarihi: 2024
  • Doi Numarası: 10.17824/yerbilimleri.1395438
  • Dergi Adı: Yerbilimleri/ Earth Sciences
  • Derginin Tarandığı İndeksler: Scopus, Aquatic Science & Fisheries Abstracts (ASFA), Geobase, TR DİZİN (ULAKBİM)
  • Sayfa Sayıları: ss.133-153
  • Anahtar Kelimeler: Bituminous shale, hydrocarbon potential, kerogen, MFA (mofified fischer assay), organic facies, organic matter
  • Ankara Üniversitesi Adresli: Evet

Özet

In this study, with the help of organic geochemical properties of Eocene aged bituminous shales in Çeltek (Amasya) and Sorgun (Yozgat) fields; It is aimed to evaluate the depositional conditions and hydrocarbon potentials of the region. For this purpose, in the examples; Rock-Eval pyrolysis, Gas Chromatography (GC), Modified Fischer Assay (MFA) analysis and organic facies evaluations were performed. The TOC values of bituminous shales have excellent source rock properties and these values are on average 9.71% in the Çeltek (Amasya) field and 6.19% on average in the Sorgun (Yozgat) field. Kerogen types according to HI, HI-OI, HI-Tmax, S2-TOC, S2/S3 parameters and organic petrographic data; It is Type-I and Type-II in the Çeltek (Amasya) field, and Type-II in the Sorgun (Yozgat) field. The Tmax averages of samples from Çeltek (Amasya) and Sorgun (Yozgat) fields are 439.6℃ and 435.04℃, respectively. According to the maturation and Bitumen Index values, it was determined that the samples in the Çeltek (Amasya) field were at the beginning of expulsion, while there was no HC expulsion in the Sorgun (Yozgat) field. According to MFA analysis: The (average %) oil yield of the samples from the Çeltek (Amasya) field is 5.13% and has a medium economic potential; in the Sorgun (Yozgat) field, it was determined that the samples did not have an economic oil potential with an oil yield of 2.20%.