FIELD: oil extractive industry, possible use for extracting oil pools with underlying water.
SUBSTANCE: method includes draining formation water from water bed until forming of area with decreased level of water-oil contact, forcing bed water into water bed and draining water through extractive well. In accordance to invention bed water is forced from water-bearing bed and bed water is forced into water-bearing bed in force well simultaneously but separately. Forcing of bed water is performed through apertures of casing string of force well, which are perforated in zone of shoe of water bed. Product wells are positioned in zone of decreased level of water-oil contact. Extraction of oil from product wells is performed simultaneously with draining of bed water.
EFFECT: increased duration of effect of decreased presence of water in extracted product.
1 ex, 1 dwg
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