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Productivity of the Jurassic deposits of the Barents Sea shelf have been proved on a number of the hydrocarbon fields on the Russian and Norwegian sectors. Besides significant accumulations of gas and condensate, a new first oil field have been discovered on the western part of the shelf. Sedimentary cycles can be marked out in the Jurassic section due to several periodic changes of deposition. High prospective sandstone reservoirs have been deposited in the regressive periods. Seals are represented by the regional shale layers which were formed during transgressions. A new oil and gas reservoirs can be found not only on the anticline structures. A huge amount of large lithological traps can be marked out