Presented are data on the volumes of produced fluids and oil, oil density and viscosity for the fields of Krasnoyarskaya group. Reviewed is principle design of Krasnoyarsk oil treatment unit before its modernization, before and after end phase divider KDF-176 commissioning. It is noted, that utilization of high capacity end phase divider enables to enhance treatment degree for heave high viscosity oils and significantly reduce their water-cut.