FIELD: oil industry.
SUBSTANCE: method includes drilling vertical extraction and force wells, extraction of oil through product wells, forcing of working agent through force wells. Low-penetrable areas of deposit are detected. Side horizontal shafts are drilled into low-penetrable deposit zones in well by washing away rock under high fluid pressure 15-20 MPa with forming of thin and long channels, channels pass through cut aperture in casing column with use of flexible shaft and with consideration of condition for full opening of fractured crack in low-penetrable deposit zone. Forcing of working agent into low-penetrable zones is performed through side horizontal shafts with forcing of oil into highly penetrable zones.
EFFECT: higher oil yield.
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