Relevance. The formation and distribution of heavy and viscous oil deposits are not a strictly isolated issue in geology. The genesis of this type of hydrocarbons cannot be separated from the process of petroleum formation. According to the theory of biogenic hydrocarbon origin, light, medium, heavy, and ultra-heavy oils are formed from organic matter in nature. Abiogenic synthesis is also possible under certain geological conditions, but the vast majority of oil and gas deposits, with a high degree of validity, are products of the transformation of organic matter residues in sedimentary rocks. The study of these materials is essential for achieving positive results in prospecting and exploration work. Naturally, the fundamental principles of biogenic hydrocarbon synthesis allow for the formulation of several postulates that are not doubted by proponents of various views on the genesis of natural fluids. Among such postulates, within the framework of biogenic hydrocarbon synthesis (gravitational theory of hydrocarbon deposit formation), the following can be identified: the existence in the Earth's crust of gas, liquid, and solid hydrocarbon phases; the systematic gravitational distribution of liquid fluids and gases in the sedimentary strata due to Archimedean forces acting upward, with the participation of surface tension forces at phase interfaces, while solid hydrocarbons remain immobile in the subsurface; migration (leading to the formation of liquid and gaseous hydrocarbon accumulations), occurring in various forms of fluid movement, subject to mechanical laws during diffusion and filtration through primary and secondary pores in rocks. Aim. To study the conditions of formation and the of the antigravity field on the filtration-capacity characteristics of reservoir systems. Objects. Productive sediments of the Pokur Formation. Methods. The developed concept of the study of gravity and antigravity in reservoir systems is based on the research of electromagnetic characteristics of rocks; the study of the antigravity field effect on the possibility of extracting high-viscosity fluids from low-permeability reservoir rocks is conducted taking into account the postulates of quantum mechanics and quantum gravity. Results. It was determined that the driving force in the extraction of highly viscous fluids is the quantum-mechanical momentum of the "reservoir–fluid" system rather than the velocity of the filtration flow. For the developed methodical approach to the study of antigravity in reservoir systems, the semantic basis of the postulates of quantum mechanics and quantum gravity has been interpreted.