FIELD: mining.
SUBSTANCE: method involves injection of cold working agent to strata, oil extrusion from the strata and evaluation of stratum permeability performed by analytical expression with account of oil yield, yield by simple piston oil extrusion from strata, permeability of high- and low-permeable strata. With the strata permeability ratio exceeding the factor of 5, working agent injection volume and rate are adjusted to ensure cooling of the neighbour stratum to the temperature, at which oil is not thickening or losing fluidity.
EFFECT: increased oil yield of a pool.
1 ex
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