标题：CONIACIAN-SANTONIAN PARALIC SEDIMENTATION IN THE RAKOWICE MAE AREA OF THE NORTH SUDETIC BASIN, SW POLAND: SEDIMENTARY FACIES, ICHNOLOGICAL RECORD AND PALAEOGEOGRAPHICAL RECONSTRUCTION OF AN EVOLVING MARINE EMBAYMENT
摘要：Comprehensive geochemical analyses (Rock-Eval pyrolysis, stable carbon isotopes, biomarkers and aromatic hydrocarbons and elemental composition of kerogen) provide an explanation of genetic relationships between dispersed organic matter in various source rock horizons of the Palaeozoic–Mesozoic basement in the Carpathian Foredeep and also the liquid (oils and condensates) and gaseous hydrocarbons accumulated in reservoirs in the area between Kraków and Ivano-Frankivs’k. The study region was divided into seven zones around oil, condensate and gas deposits for detailed determination of genetic oil – natural gas – source rock correlation. Based on source, reservoir, seal and overburden rocks, generation, expulsion, migration and accumulation of hydrocarbons and trap formation along with 1-D and 2-D modelling, two separated petroleum systems of the Palaeozoic–Mesozoic strata were established. One petroleum system occurs in the western part of the Maopolska Block, the second one in the eastern part of the Maopolska Block and western part of the Kokhanivka Zone (south-eastern Poland – western Ukraine). In addition, nine generation and expulsion areas were identified. The comparison of the two petroleum systems reveals that the western part of the Maopolska Block has considerably greater prospects for oil and gas exploration than the eastern part of the Maopolska Block and the western part of the Kokhanivka Zone.
关键词：source rock oil-gas correlations;petroleum system;generation and expulsion areas;Palaeozoic– Mesozoic basement;Carpathian Foredeep;Poland;Ukraine
