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Rock-Eval pyrolysis is an exceptionally reliable and effective method in analysis and evaluation of source rocks. The suitable core or cutting sample choices, consequence of processing and investigations are indispensable condition for successful scientific applications. This study demonstrates geochemical data of representative pyrolysed Permian, Triassic and Jurassic fine grained sediments from Central South Moesian Platform Margin. The quantity and quality of the organic matter in rocks are measured and calcula...

The oil and gas perspectives of the Triassic rocks in the Central South Moesian Platform Margin are evaluated on the basis of a complex geological analysis. The geodynamic evolution of the region during Triassic was dominated by failed rifting phases, followed by Early Cimmerian orogeny. These events have predestined tectonic processes and sedimentation settings, leading to deposition of source rocks, reservoirs, permeable migration pathways and seals. The initial extensional stages and then compression at the end...

Sensitivity maturity analysis is being used mostly in finding the best fitting parameters for thermal modeling. The sensitivity of the models in Beglej- Kalenik area demonstrates the importance of heat flow history - subject to uncertainty due to complicated geology. The specific analysis includes patterns based on two models (complex and constant), which responses are studied with respect to possible variations. The paper is focused on the conducting sensitivity analysis of sediment thermal maturity, applying dif...

Vitrinite reflectance (\%Ro) analysis is the major method in definition of thermal maturity of sediments. The rock katagenetic alterations can also delineate the thermal history of well sections, structures, zones and sedimentary basins as shown in this case study for North Bulgaria. The well R-1 Dragana data modeling visualizes a local heat flow, temperature and vitrinite reflectance distribution in geological time. Additionally, the geohistory analyses define the exact period of oil and gas generation from persp...

Collection and analysis of well data is important process, allowing a reconstruction of the penetrated rocks. Numerous charts and diagrams illustrate all sorts of geological information. Some of them are demonstrated and generalized by well sections from south-western part of the Central North Bulgaria. Logs together with well core and cuttings are the bases for construction of a general Mesozoic lithostratigraphy column. Besides the major lithotypes the source rocks, reservoirs and seals are also outlined. Select...