A new approach to the prospects of the oil and gas bearing of deep-seated Jurassic deposits in the Western Siberia

Abstract

complexly constructed low-permeability reservoirs are still poorly understood. This slows down the development of oil and gas resources of the Jurassic and deeply submerged pre-Jurassic deposits of the West Siberian oil and gas basin. There is also no consensus among the geological community on the prospects of these deposits from the perspective of the oil generation in them and subsequent emigration. There are many questions on the structure and oil and gas content of the deposits of the Bazhenov formation, whose oil resources amount to tens of billions of tons. The problems of oil and gas content and mapping of heterogeneous structure of massive rocks, including the basement formations, are considered in the article. In addition, the prospects of the oil and gas potential of the Jurassic and pre-Jurassic deposits of the northern regions of Western Siberia with geological and geochemical data were estimated. The revealed zones of highly transformed organic matter in the sediments of the Bazhenov formation and a number of other facts allow us to re-argue the prospects of the oil and gas bearing of the underlying deposits.