Prediction of source rocks: Jurassic case study

• Autorzy: Golonka J. , Krobicki M. , Słomka T. , Waśkowska-Oliwa A. , Kiessling W. , Bocharova N. , Edrich M. , Ford D. , Pauken R. , Wildharber J.
• Konferencja: International Congress on the Jurassic System (7 ; 06-18.09.2006 ; Kraków, Poland)
• Języki publikacji: EN

Abstrakty

EN

The Late Jurassic source rock studies included thirty six hydrocarbon provinces worldwide. Regions were evaluated to obtain the Source Rocks Prediction Value (SRPV). The effectiveness of three major processes (biologic productivity, depositional preservation, and non-dilution) responsible for organic richness of the rocks was evaluated. The value between 1 and 5 (5 being most effective) was assigned by at least five experts to each region. The results were combined to obtain an average value. The three values, one for each of the major processes, were multiplied together to produce a SRPV, range 1-125. To calibrate the method SRPV's were assessed of the five independent areas and plotted against the measured Source Potential Index (SPI) values. The SPI is a measure of cumulative petroleum potential defined as the maximum quantity of hydrocarbons (in metric tons) that can be generated within a column of source rock under 1 m2 of surface area (Demaison & Huizinga 1991). Average SPI measurements have been published for the Late Jurassic marine source rock sequences found in the mentioned above 5 independent Late Jurassic tectono-depositional provinces. The calibration allowed to rank all thirty six provinces and obtain the modeled SPI value for each province. The Northern Tethyan Carpathian Basin was ranked ninth. The authors are evaluating now the actual possibility to find new Jurassic/Early Cretaceous source. The high organic productivity in these basins was presumable caused by upwelling (Golonka & Krobicki 2001), as well as restricted conditions in the narrow rift basins. According to Picha et al. (2005) the Upper Jurassic organic-rich Mikulov marls representing world-class source rock were found in the wells in southeastern Czech Republic and northeastern Austria. These 1400 m thick organic-rich rocks with TOC value 0.2-10% sourced oils in the Vienna Basin and Carpathian subthrust. The similar source rocks perhaps exist in the deeper subthrust areas in Polish, Slovakian and Ukrainian Carpathians.

Słowa kluczowe

EN

Jurassic; hydrocarbons; Carpathians; Tethys

• Wydawca: Państwowy Instytut Geologiczny - Państwowy Instytut Badawczy
• Czasopismo: Volumina Jurassica
• Rocznik: 2006
• Tom: Vol. 4, no. 1
• Strony: 260--261
• Opis fizyczny: Bibliogr. 3 poz.

Twórcy

autor

Golonka J.

autor

Krobicki M.

autor

Słomka T.

autor

Waśkowska-Oliwa A.

autor

Kiessling W.

autor

Bocharova N.

autor

Edrich M.

autor

Ford D.

autor

Pauken R.

autor

Wildharber J.

• Faculty of Geology, Geophysics and Environmental Protection, AGH University of Science and Technology, Al. Mickiewicza 30, PL-30059 Kraków, Poland,

Bibliografia

• 1. Demaison G. and Huizinga B. J. 1991. Genetic classification of petroleum systems. AAPG Bulletin, 70: 1626-1643.
• 2. Golonka J. and Krobicki M. 2001. Upwelling regime in the Carpathian Tethys: A Jurassic-Cretaceous palaeogeographic and paleoclimatic perspective. Geological Quarterly, 45: 15-32.
• 3. Picha F. J., Stranik Z. and Krejci O. 2005. Geology and hydrocarbon resources of the Outer Western Carpathians and their foreland, Czech Republic. In: Golonka J. and Picha F. J. (Eds), The Carpathians and their foreland: Geology and hydrocarbon resources. AAPG Memoir, 84: 49-175.