Structural-Group Composition of Asphaltenes as an Indicator of Physicochemical Processes in Producing Oil Formations

摘要

Statistically significant differences in the structural-group asphaltene composition of produced and slightly and strongly transformed residual oils from Devonian deposits of the Romashkinskoe field of the Republic of Tatarstan were revealed.For every asphaltene group,trends in the structural-group composition were determined and the influence of natural and anthropogenic factors was estimated.