METHOD OF DEVELOPMENT OF OIL POOL HAVING RESERVOIR PITCHING-OUT ZONES Russian patent published in 1997 - IPC

FIELD: oil-producing industry. SUBSTANCE: injection wells are located along the line of pitching-out of reservoir. In immediate vicinity of wells and parallel to lines of reservoir pitching-out, wellbores of producing wells are located or rows of vertical producing wells. Reagent is injected into injection wells after increase of formation pressure in these wells exceeding the initial one by 5-10%. EFFECT: cut down material expenditures for injection of displacing agent and increased oil recovery. 1 dwg