FIELD: oil and gas production.
SUBSTANCE: proposed method comprises injecting working agent in intermittent mode via horizontal wells arranged crisscross in oil field with horizontal wells arranged mutually perpendicular and oil extraction via vertical production wells. Injection is performed at decreasing volume of working fluid injection but at intermittent increase in said volume before every injection cycle. Periodicity of sharp increase in injection volume and duration of decrease therein are defined experimentally for various reservoirs from fingerprints of water content in extracted products. With said water content exceeding economically sound level, inclined wells are bored from said reservoirs perpendicular to nearest injection horizontal well to fill bored wells with working fluid at preserved cyclicity of injection.
EFFECT: higher oil recovery, longer water-free production.
1 dwg
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