Mixing of liquid and powdery components of process fluids with the help of hydro-ejector devices and mechanical agitators does not always lead to a sufficiently rapid interaction of the components. It may take an unacceptably long time for the process fluid to reach stable parameters. In this regard, an important stage in the preparation of drilling fluids, grouting systems, silencing fluids and other process fluids used in drilling, repair and operation of wells is the dispersion and homogenization of their components, aimed at accelerating the interaction of phases. The high efficiency of existing dispersants and homogenizers in commercial practice is currently associated with high speeds. The higher the flow rates of liquids, the lower the operational reliability of the devices. For this reason, dispersants are rarely used in fishing practice. This leads to the fact that process fluids are either pumping into the well without being fully ready for operation, or useful working time is lost to bring the liquids parameters to the required values by prolonged mixing with mechanical agitators and by pumping recirculation. The purpose of such treatment is to obtain sedimentation-stable suspensions and emulsions with stable rheological parameters. A promising direction in this area is the use of cavitation technologies. At the heart of the design of all jet hydrodynamic cavitation shredders of suspended particles is a cavitation generator. The author's design was developed and the generated cavitation flows in the flow part were described. The greater the coefficient of local hydraulic resistance of the cavitation generator, the lower the speed required to obtain cavitation in the compressed section of the flow. At a given throughput and pressure, it is possible to find the area of the narrowed part of the local resistance that provides the beginning of cavitation. The developed design of the cavitation generator can be used with both low-pressure centrifugal pumps and high-pressure plunger pumps. When selecting parameters, it is necessary to ensure the flow velocity of 14 m/s in the flow section of the local hydraulic resistance.
Acknowledgement. The research was carried out with the financial support of the Kuban Scientific Foundation within the framework of the IFI-20.1/54 scientific project.
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