Structure Features of the Technogenic Oil Lenses in Areas of Petroleum Product Logistics Facilities

Abstract

The purpose of this article is to analyse oil lens material as a source of environmental risks arising from the location of large petroleum product logistics facilities (LPFs). Materials and methods. In-situ modelling was used as the main research method, the algorithm of which included selection of the research object, sampling of lens material from observation wells, conducting an experiment to study the differentiation of lens material over time. Results and discussion. For the first time, data were obtained on the composition of the lens including: 50% - light petroleum products; 10% - heavy petroleum products; 40% - contaminated water with paraffin solubility of 2-5 mg/dm3 and diesel fuel solubility of 8-22 mg/dm3. Time analysis of lens material differentiation revealed a time interval of maximum separation of all its constituents, which was 108-120 hours. Conclusions. The conducted research for the first time made it possible to determine the composition of oil lenses formed in the soils of the aeration zone and on the surface of aquifers in the areas of long-term oil products logistics facilities. The efficiency of rehabilitation of ecological and geological systems at these sites depends on the reliability of information about the composition and properties of technogenic oil lenses.