Akademik Veri Yönetim Sistemi
PETROLEUM GEOSCIENCE, cilt.12, sa.1, ss.41-48, 2006 (SCI-Expanded)
In the Tuz Golu Basin (central Anatolia), the Karapinaryaylasi Formation (Palcocene-Eocene) is represented by shale and sandstone alternation, conglomerates and lensoid limestones. The total organic carbon (TOC) results from most outcrops and the Karapinar-2A well samples show less than 0.50 wt%, and the hydrogen index (HI) and genetic potential values are very low. In the Aktas-1A, Aksaray-1 and Sultanhani-1 wells, the TOC content is generally lower than 0.5 wt% but can reach up to 1.50 wt%. Rock-Eval pyrolysis indicates that some intervals yield within the Karapinaryaylasi Formation possess good gas potential, with a total of up to 4268 ppm. The Paleocene-Eocene rocks are thermally immature to marginally mature with respect to T-max, ranging from 420 degrees C to 458 degrees C, while vitrinite reflectance and spore colour index values range from 0.50% R-0 to 0.88% R-0 and 4 to 8(?), respectively. Microscopic investigations and the HI vs. oxygen index (OI) and HI vs. T-max diagrams show that the samples contain Type III and Type II kerogen, which is often oxidized, together with reworked material. Gas chromatography and gas chromatography-mass spectrometry analysis results support these conclusions. Consideration of all the data indicates that the Karapinaryaylasi Formation (Paleocene-Eocene) could be the source rock for gas production in the Tuz Golu Basin.