FIELD: oil producing industry, particularly, methods of increase of oil recovery from oil pools with nonumiform reservoirs. SUBSTANCE: method includes alternating injection of alkali fringes of clay suspension and polymer dispersion. Introduced additionally into alkali fringes are preliminarily foamed surfactants, and introduced additionally into polymer alkali dispersion is reagent KOMETA-R. Oil is withdrawn from producing well. Volume ratio of fringes, total volume of injected fringes and number of cycles are selected on basis of concrete geological situations on well and required radius of stimulation. For preparation of alkali solutions, use is made of sodium or potassium hydroxide, soda ash or edible soda, or their mixtures. EFFECT: provided limited injectivity of high-permeability interlayers, involved into development low-permeability interlayers, increased rate of development and oil recovery from formation. 1 tbl
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Authors
Dates
2003-08-27—Published
2002-10-31—Filed