METHOD FOR ENVIRONMENTAL PROTECTION OF AREAS AGAINST OIL POLLUTION Russian patent published in 1999 - IPC

FIELD: oil pollution removal. SUBSTANCE: a number of wells are drilled on area to be protected and formation water is taken from these wells to form depression funnel, which is used to collect petroleum products for further removal. At least one well is located beyond polluted area and extraction of petroleum products is carried out with flow rate ensuring stream continuity condition for petroleum products coming to depression funnel. This condition is expressed by following equation: R_iV_iS_i/R_jV_jS_j wherein R_i,R_j are petroleum product densities in ith and jth sections of pollution spot, V_i,V_j are flow rates in the same sections, and S_i,S_j are areas of these sections. EFFECT: eliminated thin-layer accumulations of petroleum products from formation water surfaces. 2 cl, 4 dwg