INVESTIGATIONS OF THE OIL DISPLACEMENT FE ATURES FOR THE SURFACTANT COMPOSITIONAL SYSTEM USING

In this paper are described the nonionic surfactant compositional syst em using. Are shown, that the system viscous properties can control th e oil displacement and improve sweep efficiency of the heterogeneous f ormation. The efficiency of the mentioned systems in comparison with t he watersoluble surfactant slugs will be higher for the significantly waterflooded formations. Viscous emulsion system can be introduced dee ply in the oil saturated formation for the increasing sweep efficiency . In the same time the viscosity of this system in water saturated lay ers slowly increased for the transferring introduction of the slug in goal oil saturated layers.