The formation of sludge in high-paraffin oil with added resins of various compositions and an inhibiting additive is investigated. It is found out that the amount of sludge decreases with an increase in the concentration of additives of resins with a lower surface tension value and a higher content of aromatic structures and heteroatomic components in their composition. With an increase in the fraction of resins with enhanced aliphaticity and the content of polysubstituted aromatic structures, an increase in the amount of oil sludge, and a decrease in the efficiency of the additive occur. The observed decrease of low-molecular n-alkane fraction and the reduction in average sizes of paraffin hydrocarbon aggregates are due to an increase in the amount of additives of petroleum resins in the composition of asphaltene–resin–paraffin deposits.
A. N. Werner (Wed,) studied this question.