Kinetic evaluation of oil generation from potential source rocks using the Arrhenius model in Kilverkarim oilfield

Authors

1 Department of Mining and Oil Engineering, Faculty of Engineering, Imam Khomeini International University, Qazvin, Iran

2 Department of Geology, Faculty of Sciences, Imam Khomeini International University, Qazvin, Iran

Abstract

The application of petroleum geochemistry and the determination of the source of petroleum source rock will greatly help to reduce the risk of oil exploration. In this regard, kinetic models have been introduced to more accurately assess the maturity of the source rock as well as the percentage of oil generation. In this study, the application of Arrhenius model as a suitable kinetic model for estimating the percentage of oil generation in the source rock has been demonstrated. For this purpose, the Kazhdumi, Pabdeh, Sarvak and Gurpi formations were studied as potential source rocks in the Kilur Karim oilfield to illustrate the application of the method. At first, using the results of Rock-Eval analysis, the type of kerogen was determined based on the Arrhenius model classification. Then, with the burial history, the time-temperature index was determined and the conversion rates of the probable source rocks were determined using diagrams and model relationships. For validation, the results were compared with previous descriptive research. The results show that the hydrocarbon production potential of the Pabdeh formation is weak to good and the dominant kerogen is of type IIB to IIC ( X=70/68%, X=3/92%). Kazhdumi formation also has moderate to good hydrocarbon potential and has entered the oil window (X=66/04%, X=100%). But the Sarvak and Gurpi formations do not enter the oil window and have a lower TTI.

Keywords

References

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Advanced Applied Geology
Volume 11, Issue 1
May 2021
Pages 157-168

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