The object of research was the soil from oil wells No. 60, 65, and 76 of Staryi Sambir Petroleum Deposit – man-made geocomplexes with destroyed biogeocenotic cover. The degree of toxicity and the total amount of petroleum products in the soil were measured. Based on the conducted studies we can conclude that the soil in the region requires measures that would improve its quality, in particular, determining the optimal conditions for phytoremediation.