Stability and compatibility of environmentally friendly surfactants with produced water from the fields located in the Western Siberia. Some specific features of oil-water emulsions formation
In the process of oil production, preparation and transportation surface active agents (surfactants) became widely used nowadays. Herewith, wide use of environmentally safe compounds, especially in the processes associated with large downloads should become part of the practice. From a technological point of view, one of the important moments when testing and using the reagents, surfactants in particular, is determination of the effect of their compositions on oil-water emulsions (WOE) stabilization. In this regard, the study of processes of micro-emulsions formation is a very important task. The paper examines the compatibility of a number of environmentally friendly anionic surfactants of foreign production with the model of «Western Siberia» reservoir water with the total salinity of 20 g/L. While forming the emulsion and studying its properties, crude oil from the fields named after R. Trebs and A. Titov with water mass fraction less than 0,3 % was used. The influence of surfactants of foreign manufacturers on the oil-water micro-emulsions stability is studied; inversion kinetics of the system of oil/aqueous solution of surfactants is discussed.