METHODS AND APPROACHES FOR EXTRACTION OF RESIDUAL RESERVES FROM HETEROGENEOUS OIL FIELDS

Extraction of residual oil reserves from heterogeneous deposits is one of the most pressing problems of the oil and gas industry. Due to the depletion of easily extracted stocks, the need for effective methods of extracting residual stocks is constantly increasing. Therefore, in practice, oil and gas production is constantly in the center of attention, both traditional methods of extracting residual reserves taking into account the geological features of heterogeneous deposits, and modern technologies and innovative approaches that allow to increase the efficiency of the development of these reserves during development. Since the study of the characteristics of the distribution of residual reserves in the fields is related to the reasons for their formation, and the reasons, in turn, are related to the heterogeneity of layers, specifying the specifics of the methods and approaches to the extraction of residual reserves from non-homogeneous oil fields has theoretical and practical importance from the point of view of determining the effectiveness of technologies for the development of identified residual reserves during development. Since the theoretical and practical research conducted in this direction is primarily aimed at studying the conditions under which factors depending on the heterogeneous properties of the reservoirs manifest themselves during the field development, the article analyzes the influence of non-homogeneous properties of layers on the features of oil field development, as well as the regularity of the formation of residual reserves and traditional and non-traditional technological methods of extracting residual oil from non-homogeneous oil fields, highlighting the main characteristics and types of stratum heterogeneity. It was determined that a number of technological factors affect the heterogeneity of oil fields due to their structural and reservoir properties in the development process, and as a result, the impact of the heterogeneity of the fields on the development process becomes even more complex due to the influence of these factors, which are also necessary in assessing the efficiency of the applied technologies. As a result, it was noted that the extraction of residual oil reserves from heterogeneous fields is a process that requires a comprehensive approach based on understanding the geological and technological properties of the fields, and the application of modern technologies and development methods can help to significantly increase hydrocarbon production at minimal cost and in accordance with modern environmental sustainability requirements. Keywords: Oil field, residual reserve, heterogeneous layer, technological methods and approaches, filtration-capacity properties, efficiency