METHOD OF INCREASING OF PRODUCTIVITY OF PRODUCING WELLS Russian patent published in 2001 - IPC

FIELD: oil and gas producing industry, particularly, methods of increasing of oil recovery from formations composed of sandstone, terrigenous and argillaceous reservoirs; applicable in restoration of permeability of bottom-hole zones of producing wells by perforation and integrated treatment. SUBSTANCE: method includes injection of anhydrous acid in medium of organic solvent with low dielectric permittivity (1.0- 10.0) into producing wells. EFFECT: higher productivity of producing wells, increased sweep of formations with active aid solution treatment and cleaning of reservoirs from asphalt- resinparaffin accumulations. 3 dwg, 1 tbl