Abstract. In the article, based on data from the Sharihan-Khojaabad field, an analysis of losses and the effectiveness of the water pressure maintenance system was carried out, as a result of which, thanks to the dynamics of changes in injection, it was revealed that water is not pumped to the target site, or the injected water cannot influence a nearby production well due to a tectonic fault between them. In order to increase their productivity, measures have been proposed that can subsequently increase the efficiency of wells.