ABSTRACT
Waterflooding of oil fields is undoubtedly the most effective way to develop them, providing high rates of oil recovery, significant periods of well flowing and an increase in oil recovery coefficient. Suffice it to say that 95% of all oil produced in the country is accounted for by fields developed using various modifications of waterflooding systems. At the same time, the amount of water pumped into the reservoirs on average doubles the volume of the selected oil.
Naturally, such volumes of injection are associated with huge investments and operating costs, determined by the need to drill injection and water wells, the construction of water intakes, pumping stations, long-term pressure pipelines, commissioning of sewage treatment plants, etc.
So, for example, 381 injection wells were drilled at one of the largest oil fields in the country - Mamontovskoye, 20 water wells from which Apt-Cenomanian water was extracted mechanically, 17 cluster pumping stations were built, each of which owed 7-10 bushes.
The total length of high-pressure pipelines in the field is 656 km. The vast majority of the country’s oil fields are equipped with similar RPM systems. The functioning and maintenance of such a complex economy is associated with the large operational costs of small oil production resources should be an increase in the technical and economic efficiency of the reservoir pressure maintenance system. The aforementioned will be caused by an increase in the injectivity of injection wells associated with a decrease in viscosity, both when using directly thermal water for flooding, and when heating injected surface water due to deep heat.
Such an increase in the acceptability of injection wells allows decreasing wellhead injection pressures while maintaining injection volumes, or increasing injection volumes while maintaining these pressures, or reducing the number of injection wells while maintaining wellhead pressures and injection volumes.
