Additional parameters of the flooding agent of the reservoir pressure maintenance system

The object of research is the efficiency of the washing action of the waterflooding agent when using the system of floating pressure. This work aims to analyse the effect of microdoses of different oilfield chemicals on the ability of water injected into the reservoir to extract oil and justification of the need to include control of this parameter in the regulatory documents governing the quality of waterflood agent. Method. Based on the analysis of pilot tests at the Western Siberian field, it was established that the negative consequence of getting even microdoses of incorrectly selected reagents in waterflooding agents was the under-extraction of oil. The washing effect of waterflooding agent in relation to oil films was investigated experimentally with the help of the developed installation, which allows recording the kinetics of oil films washing off in automatic mode. Results. It was found that the increase in the washing ability of waterflooding agent was possible by optimizing reagent compositions due to the reduction of particle sizes of used oilfield reagents. It is recommended to include the evaluation of this parameter by the express-control method in the list of waterflood agent quality indicators.