METHOD FOR DEVELOPMENT OF OIL FIELD Russian patent published in 1994 - IPC

FIELD: development of oil field. SUBSTANCE: method includes drilling of wells spaced in geometric pattern presenting two regular hexagons turned relative to each other through 30 deg. with producing wells located on sides, in corners and centers of hexagons. Additional wells are drilled to expose discontinuous formation and located inside inner hexagons symmetrically to outer hexagon. Producing wells are perforated stage by stage. After breakthrough of injected agent into producing wells located in corners of inner hexagon, the second stage is started. Subjected to exposure is entire producing section in wells located on sides of outer hexagon, with their treatment up to breakthrough of displacing agent and subsequent transition to injection. EFFECT: higher efficiency. 4 dwg