• Hydrocarbon Generative Properties and Maturity of Upper Cretaceous and Lower Eocene Sediments in the Middle Kura Depression

    This presentation in English is from the 2021 SPE Annual Caspian Technical Conference. Our archived 2020-21 event content is now available free to SPE members!

    • Paper Number: SPE-207041-MS
    • Published: 5 October 2021
    • Authors: Shahin Khosrov Akhundov; Mushfig Farhad Tagiyev; Arastun Ismail Khuduzade; Natig Namig Aliyev

    Meso-Cenozoic sedimentary cover in the Middle Kura depression located between the Greater and Lesser Caucasus mountain structures contain numerous oil accumulations. According to studies in the Cretaceous and Paleogene strata, sedimentary organic matter is of mixed clastic-marine origin.

    Moderate amounts of organic matter have been recorded in the Eocene sediments (on average 0.70%), in the Upper and Lower Cretaceous average values made up 0.39% и 0.42%, respectively. Analysis of bitumoid composition suggests that in several areas bitumoids have experienced a widespread movement across the sedimentary strata. The results of measurements on isolated samples indicate that the Cretaceous strata have only advanced to the initial hard-coal stage of organic transformation (0.48-0.55%Ro). On vitrinite reflectance data the Eocene deposits in studied areas of the Middle Kura depression have reached initial stage of catagenetic transformation (±0.48Ro%; est. paleotemperature of 85°C). Nonetheless, analysis of formation conditions of commercial HC accumulations found earlier in the Eocene strata allows considering them the most prospective in the Middle Kura depression.

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  • Hydrocarbon Generative Properties and Maturity of Upper Cretaceous and Lower Eocene Sediments in the Middle Kura Depression