Akademik Veri Yönetim Sistemi
MARINE AND PETROLEUM GEOLOGY, cilt.16, sa.2, ss.151-164, 1999 (SCI-Expanded)
Mesozoic source rocks and crude oils from the Besikli oil field, Adiyaman, Turkey, have been characterized by a variety of organic geochemical techniques. The potential source rocks investigated include the Karababa (A, B, and C members) and the Karabogaz formations. The Karababa-A member and the Karabogaz formation of clayey limestone and limestone are important source rocks in the basin. The crude oils examined in this study were obtained from reservoir formations of the same age throughout the oil field. The source rock screening analysis indicates that the Karababa-A member and the Karabogaz formation have substantial oil-generation potential. The Karababa-B and C members have no source potential because they do not contain sufficient amount of total organic matter content (0.12-0.24 TOC wt%). Selected source rock and oil samples were characterized in detail, and distributions and concentrations (both relative and absolute concentrations, of biomarkers at different oils were examined. The biomarker characteristics were combined with other geochemical and geological data to interpret the sources: depositional environments, and the age of the oils. Oil-source rock correlations were made between source rocks and crude oils based on qualitative and quantitative biomarker distributions. Petrographic descriptions and vitrinite reflectance measurements were used to evaluate petrographic properties of source rocks and maturity levels of the formations. The source rocks for the oil from the Karababa-A member and Karabogaz formation are not mature enough and therefore oil should have migrated from the outside of the study area. (C) 1999 Elsevier Science Ltd. All rights reserved.