Evaluating the efficiency of the development of boundary oil rims in the depletion drive

Abstract

Every year, the relevance of developing oil rims, which were not previously involved in development due to the need to use expensive technologies, is growing. However, at present time the development of oil rims is determined by the depletion of light oil reserves. The massive gas cap and the high gas factor in oil rims don't allow to accurately determine the possibility of developing an oil rim in the depletion drive. The aim of the article is to develop a tool for evaluating the effectiveness of the development of boundary oil rims in the depletion drive. The key geological and physical factors that have the greatest impact on the efficiency of the development of oil rims were identified; analogous deposits were analyzed, on the basis of which geological and hydrodynamic models were built. We evaluated the role and influence of studied factors, such as permeability, angle of inclination of the oil rim, volume of the gas cap, thickness of the oil rim. A tool has been developed to assess the effectiveness of the development of boundary oil rims in the depletion drive and the use of the tool has been demonstrated.