The irrigation method, which was once highly valued by oil workers and could increase oil recovery from fields, is currently unable to ensure full oil production from the reservoir. Especially when pumping into heterogeneous formations and fields with high-viscosity oil, this manifests itself in a small set of sweep coefficients. Upon completion of field development, it turns out that 40-70% of oil reserves remain unrecoverable. At this time, the remaining oil reserves are in such a state that they cannot be extracted by known processing methods.