Shale resource potential of the Silurian Dadas Formation in Diyarbakır (SE Anatolia of Turkey) and its surroundings

  • Muhammet Akif Inan
  • Orhan KavakEmail author
Original Paper


More than 70% of the estimated producible unconventional oil and gas reserves of Turkey are reported to be in the Dadas Formation located in Southeastern Anatolia. In this study, shale resource potential of the Dadas Formation was examined with samples taken from the A2 well which were analyzed in terms of mineralogy, organic geochemistry. These data were placed into context using a composite log obtained from the wells that penetrated the Dadas Formation. TOC contents of the formation range from 1.1 to 4.92 wt%, and Tmax values range from 431 to 451 °C. XRD mineral analysis has shown that the samples contain 73.07% illite, 3.28% smectite, 19.53% kaolinite, and 4.14% chlorite on average. The kerogen type of samples are in the fair oil origin zone. Although the Dadas Formation has low values of silica content and brittleness, these values make it valuable for consideration of the Dadas Formationability to produce shale gas. According to analysis, the Dadas shale may have limited shale oil potential.


Shale gas Dadas Formation SE Anatolia Organic geochemistry 



We would like to thank Oytun Ors for helping with log interpretations and Mursel Tekiner and Adil ÖZDEMİR for helping in drawing figures. We would like to thank the reviewers for their valuable contributions. This study is a product derived from the first author’s master thesis named “Assessment of Diyarbakır (SE Anatolia of Turkey) and Its Surroundings In Terms Of Shale Gas Potential”, Dicle University, Institute of Science, Mining Engineering Department, Diyarbakir, Turkey. This study was carried out with the contribution of the Project Numbers: DUBAP MUHENDISLIK.17.013. The authors would also like to thank Abdullah M. Al-Amri, Editor-in-Chief, and Barry Jay Katz, Associate Editor of Arabian Journal of Geosciences and reviewer Dr. Şamil ŞEN for providing helpful suggestions which have an important impact on improving the quality of this manuscript.


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Copyright information

© Saudi Society for Geosciences 2019

Authors and Affiliations

  1. 1.TPAO Batman District Management, Production ManagementBatmanTurkey
  2. 2.Institute of Science, Mining Engineering DepartmentDicle UniversityDiyarbakirTurkey
  3. 3.Faculty of Engineering Department of Mining Engineering, Division of General GeologyDicle UniversityDiyarbakirTurkey

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