RU96112654A - METHOD FOR PROCESSING BOTTOM ZONE OF A WATERFILLED PRODUCTIVE WELL - Google Patents

Claims (1)

A method of treating a bottomhole zone of a watered production well, comprising injecting a surfactant solution into the bottomhole zone, characterized in that prior to injection of a surfactant solution, a source of watering and a flooded layer is determined, injection wells are stopped, communicating through a flooded layer with a treated production well, carry out technological exposure to reduce reservoir pressure in the flooded layer, conduct isolation of the flooded float fabric with technological exposure, fill the perforation zone with an intensifying liquid based on a saline aqueous solution comprising 0.1 - 1.0% surfactant and 0.01 - 0.1% polyacrylamide, and pulse pressure is applied in its medium until injectivity of the well is not less than 70% of the injectivity of the nearest injection wells, and after injection of a surfactant solution, an inflow with a depression to the formation in the first 10 days of less than 4 MPa is called, followed by an increase to 6 MPa.