METHOD OF OIL POOL DEVELOPMENT Russian patent published in 2000 - IPC

FIELD: oil-producing industry; applicable in development of oil deposits with nonuniform reservoirs. SUBSTANCE: method includes oil withdrawal through producing wells, injection into injection wells of working agent and aqueous solution of polyacrylamide. Additionally injected through injection or producing wells is solution in organic solvent of sulfonic acid with general formula R-SO₃H or sulfonate of higher fatty alcohols of general formula R-OSO₃H, where R = C_mH_(2m+1) or C_mH_(2m+1) - - C₆H₄, m = 12-14. Organic solvent is used as light pyrolytic resin or byproduct of styrene production or butyl-benzene fraction. Weight ratio of polyacrylamide and sulfonic acid or sulfonate is set to be equal to 1:(0.5-2000). Prior to injection through producing well of solution in organic solvent of sulfonic acid, injected through the same producing well is aqueous solution of polyacrylamide. EFFECT: higher efficiency. 2 cl, 1 tbl, 6 ex