INCREASING THE EFFICIENCY OF BOTTOMHOLE INJECTION WELL ZONE

Abstract

It is necessary to know the mechanism of contamination of bottomhole injection well zone in order to choose the right exposure method and predict the interprophylactic period of operation of this well. The article provides the essence of the proposed method. The well is being closed, and the wellhead pressure is restoring. An angular coefficient is being found by wellhead pressure build up curve, and then the graphical dependences will be plotted in the ΔP-lgt coordinates. Periodically determining the degree of contamination of bottomhole injection wells zones, we can restore their purity by timely flushing and drainage. If these works don’t contribute to cleaning, hydroimpulse treatment should be carried out. The suggested technique for determining the contamination of the bottomhole injection wells zone will allow to determine the true reason for the decrease in injectivity and to correctly outline measures to increase or stabilize the absorptive capacity of the injection well.