Improving the SWAG-technology with the use of pump-ejector systems

Abstract

A set of technical solutions for improving the SWAG-technology using pump-ejector systems is proposed. To effectively influence the reservoir, it is necessary to implement the injection of a water-gas mixture into wells that open reservoir sections with the largest residual reserves (into wells with maximum reserves – a mixture with the highest gas content from the range of rational values). In this case, associated gas, nitrogen, can be used as a source of the gas phase. A description of the pump-ejector system for the use of associated gas from the annulus of production wells is also given. For the efficient operation of the system, it is necessary to select the elements of the system that will be operated with maximum efficiency under field conditions. The results of experimental studies of ejectors are presented: the efficiency of the ejector is directly related to the mineralization of the working fluid, as well as the inlet pressure.