FIELD: oil field development, particularly to obtain oil from a multiple-zone well.
SUBSTANCE: method involves drilling vertical and horizontal wells, injecting displacing agent and recovering product. Production horizontal and vertical wells and/or branched horizontal wells are drilled in zones having lesser average number of permeable intervals and greater reservoir part values and in formation junction zones of field to be developed. Injection wells present in above zone are used for oil production. Some production wells arranged along above zone border are used as injection ones along with previous highly-viscous liquid plug injection into high-porous formations to direct main liquid flow, namely oil and displacing agent, to horizontal wells.
EFFECT: increased oil recovery due to enlarged effective well bore length and due to increased inflow of oil displaceable from zones characterized by increased average number of permeable intervals to zones with high reservoir part values.
1 ex, 2 dwg
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