MANNER OF OPERATION OF INJECTION WELL Russian patent published in 2003 - IPC

FIELD: oil production industry, technological processes of maintenance of formation pressure and oil extraction, in particular. SUBSTANCE: manner includes cyclic pumping of oilcarrying brine with oil inclusions remained in it after cleaning. On completion of its operation with decrease of intake by 25-60% of initial value brine pumping is discontinued and well is put into operation mode with cleaning of channels in downhole part of productive pool and with advance of oil front to bottom of well. Then well is transferred to category of production wells with cleaning of down-hole part of pool and extraction of oil collected in porous channels of productive pool while brine with oil inclusions was injected. Later well is transferred to category of injection wells. EFFECT: increased operational efficiency of injection well, reduced usage of materials.