The detailed geological structure study of AB13 and AB2-3 formations at Samotlor field, which are under the late stage of production, has been conducted. It is noted, that the key factor, responsible for efficient further development of AB13 and AB2-3 reservoirs, is an integrated approach, targeted at the increase of water floods sweep efficiency by redistribution of filtration flows, increase of low permeability zones injectivity and oil flow stimulation in low permeability layers of bottom hole areas in production wells.