Key words: lithological heterogeneity, hydrodynamic study, group pumping stations, nipple device, geological and hydrodynamic model, non-stationary water flooding, geotechnical measures, crosswell pumping system, simultaneously-separate injection.
The approach to the non-stationary water flooding application at the Druzhnoye field is considered in the article. The assessment of the top equipment water flooding system compliance with the geological conditions of wells is made. An approach with various variants of cyclic water flooding is suggested. According to the geological filtration model calculations the most effective variant is identified. A program of measures on improvement of the reservoir pressure maintenance system is suggested.
