Journal of Petroleum & Environmental Biotechnology

Geochemical and palynological assessment of Oligocene Mezardere formation: Implications to petroleum source potential and paleoenvironmental link to eastern paratethys, thrace basin of NW Turkey

3^rd International Conference and Expo on Oil and Gas

July 13-14, 2017 Berlin, Germany

Kadir Gurgey and Zuhtu Bati

Near East University, Turkey
Turkish Petroleum Corporation, Turkey

Posters & Accepted Abstracts: J Pet Environ Biotechnol

Abstract:

Statement of Problem: Paratethys extent from western Central Europe to Mangslak area in Kazakhistan. Clastic and organic rich Oligocene Mezardere Formation (MF) is located on this framework but its link to Paratethys have not established yet. The MF is relatively thicker (1000-1500 m) than its coeval source rocks in the Paratethys. Aim: The purpose of the study is to select the most organic-rich intervals of the MF and to evaluate their hydrocarbon source potential and to investigate the link between Paratethys and the MF. Methodology: In this paper, the early/marginally mature cutting samples of the MF are geochemically, petrographically and palynologicaly analyzed and utilized. Findings: The MF was informally subdivided into Solenovian transgressive UMF upper MF and Psekhian regressive LMF lower MF, based on the distinct differences in geochemical proxy indicators for sea level variations as well as Palynological data. The UMF is characterized by abundant Wetzeliella gotchti and Pediastrum spp. occurrences that suggest fresh water (rainfall) input as happened the source rocks of the Central and Eastern Paratethys, whereas, the LMF without Wetzeliella gotchti is characterized by normal marine conditions. Organic-rich layers are observed in UMF that showed a fair to good source rock potential (Average TOC=1.14 wt.%; HI=283 mg Oil/g TOC) and low to moderate genetic petroleum potential (GP=3.65 mg oil/g rock) and source potential index (SPI=1.44 t Oil/m2). The LMF was not evaluated due to their apparently low organic-richness. Conclusion & Significance: Organic geochemical data may be utilized to select transgressive and organic-rich units when the source rock candidate has considerable thickness. The UMF shows both conventional and unconventional oil potential. The results achieved provide a much-improved understanding of paleoenvironment of the Eastern Paratethys and will be useful in integrating information from this unique locality with that from the extensively studied Central-Eastern Paratethys.

Biography :

Email: kadir.gurgey@neu.edu.tr