The paper highlights the use of non-stationary flooding, which is one of the sufficiently effective methods of increasing the oil recovery coefficient used to change the direction of filtration flows, which allow involving unprocessed oil reserves in development and reduce the rate of flooding of deposits in productive reservoirs. A common technological method of implementing non-stationary flooding is the use of cyclic modes of operation of injection wells.

As a result of the analysis, the positive effect of the implementation of the technology of non-stationary flooding was revealed, and recommendations were made to improve its application at other operational facilities of PU "ZHMG".

Keywords: unsteady flooding, injection well, oil recovery, heterogeneity, cyclic injection

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