Potential source rocks for the crude oils in the Ikizce and Tokaris oil fields, SE Turkey

Sari A., Bahtiyar I., Brenner R., Dogan A.

PETROLEUM GEOSCIENCE, vol.9, no.4, pp.347-356, 2003 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 9 Issue: 4
  • Publication Date: 2003
  • Doi Number: 10.1144/1354-079302-535
  • Journal Name: PETROLEUM GEOSCIENCE
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.347-356
  • Keywords: oil, source rocks, biomarkers, Cretaceous, Adiyaman, Turkey, MARDIN GROUP CARBONATES, ADIYAMAN OILFIELDS, TECTONIC CONTROLS, EVOLUTION, DISTRIBUTIONS, MATURATION, PYROLYSIS, INDICATOR, MIGRATION, POROSITY
  • Ankara University Affiliated: Yes

Abstract

The source rock and reservoir characteristics of the Upper Cretaceous 'A' Member of the Karababa Formation (Santonian-Coniacian) and the Karabogaz Formation (Campanian) and their relationships to the crude oils produced from the lkizce and the Tokaris oil fields, were studied using a variety of organic geochemical methods. The Karabogaz Formation is composed of limestone and chert, while the Karababa-A Member consists of clayey limestones. Both formations constitute important source rocks in the Adiyaman Basin. The crude oils examined in this study were produced from reservoir rocks of the same age in two adjacent oil fields. Biomarker characteristics in source rock samples from the Ikizce-A and Tokaris-A wells show that the Karababa-A Member and the Karabogaz Formation were deposited in reducing environments and are characteristic of carbonate facies. Correlations between the source rocks and the crude oils, based on qualitative and quantitative biomarker distributions, indicate that the oils from the Ikizce and Tokaris fields are mixed oils that were derived from both the Karababa-A Member and the Karabogaz Formation source rocks.