ÇAĞRILI KONUŞMALAR / KEYNOTES Invited Speeches ... - TPJD

Organic Geochemical Analysis of Beydili Kayası (Nallıhan/Ankara) Bituminous
Shales
Zeynep Döner 1 , Ali Sarı 2 , Derya Koca 1
1 Ankara University, Graduate School of Natural and Applied Sciences, Ankara
2 Ankara University, Faculty of Engineering, Department of Geological Engineering, Ankara
Bituminous shales of Beydili Kayası are accumulated in disoxic and anoxic redox conditions, and
have an average organic matter (TOC) contents of 6.15 wt. %. Average 0.5 wt. % TOC is considered
as an economical limit for rocks producing oil, thus the values of TOC of studied shales show
an excellent source rock potential with an average of 6.15 wt. %. In addition to Total Organic
Carbon analysis, Pyrolysis (HI, OI, Tmax, S1, S2, S3) analysis, Gas Chromatography (GC) analysis,
Thin Layer Chromatography (% Saturate Hydrocarbon, % Aromatic Hydrocarbon, % Polar, %
Asphaltene) analysis, Isotope analysis and Organic Petrography analysis (in backlit microscope)
were done in samples of Beydili Kayası, and organic matter types, maturities and hydrocarbon
potentials of studied samples were determined. Organic matter types of studied samples are
generally type I kerogen, and have oil production potential. Maturity of studied samples were
determined that they have immature and early mature degree. The S1 type hydrocarbons of the
studied samples show that no organic contamination is present in the area.
Keywords: Organic Geochemistry, Shale, HI, OI, Kerogen, Organic Carbon
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