Title screen

Deep heat flow of Yamal fields, whose oil and gas potential is associated with the Jurassic-Cretaceous formations, and the fields of Tomsk Region, whose geological section contents deposits in the Paleozoic, is studied. The method of paleotemperature modeling was used to calculate the heat flow density from the base of a sedimentary section. Besides, the correlation between heat flow peculiarities and the localization of deposits was revealed. The conceptual and factual basis of research includes the tectonosedimentary history of sedimentary cover, the Mesozoic-Cenozoic climatic temperature course and the history of cryogenic processes, as well as lithologic and stratigraphic description of the section, results of well testing, thermometry and vitrinite reflectivity data of 20 deep wells of Yamal and 37 wells of Ostaninskoe group of fields of Tomsk region. It was stated that 80% of known Yamal deposits correlate with anomalous features of the heat flow. 75% of fields of Ostaninskoe group relate to anomalous features of the heat flow. It is shown that the fields, which are characterized by existence of commercial deposits in the Paleozoic, are associated with the remarkable gradient zone of the heat flow. The correlation between the intensity of naftidogenesis and the lateral inhomogeneity of the deep heat flow is characterized as a possible fundamental pattern for Western Siberia.