Rosneft Oil Company pays significant attention to involvement in the active development of hard-to-recover oil reserves. This article has been prepared for publication as part of the implementation of the strategic program of the low-permeability reservoirs hard-to-recovery reserves development and the research activities of Rosneft Oil Company. It discusses developed innovative technologies for the development of low-permeability terrigenous oil reservoirs of the Achimov deposits and their analogues, which determine the strategy for their rational development, and new challenges associated with drilling into the zones with ultra-low-permeability reservoirs and an increase in infill drilling. In the context of a constant increase in the share of hard-to-recover reserves and the need to achieve the target oil recovery factor, 8 development technologies have been created and more than 2.5 thousand wells have been drilled using optimized development systems in reservoirs with a permeability more than (0.5-1) m2. At the same time, each of the existing development systems has the potential for optimization, which allows expanding the scope of its application and increasing the economic effect. In order to study the possibility of increasing the oil recovery factor in the ultra-low-permeability reservoirs development the Rosneft plans to conduct unique laboratory core studies to select new stimulation methods that increase the oil displacement efficiency. The deterioration of the reservoir properties poses new challenges for specialists and leads to the evolution of approaches to the development of hard-to-recover reserves and the selection of targeted technologies for specific geological conditions.
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