FLUID FLOW SIMULATION IN THE WELL-TUBE SELF-CLEANING FILTER

The relevance of the research is caused by the need to create optimal filters, the design and physical principles of which are aimed at slowing down the mudding process, reducing the hydraulic resistance, and, thereby, ensuring a long period of operation. The goal is to design self-cleaning filter constructed in the optimal way in the context of hydrodynamic. The object of the research is the well-tube self-cleaning filter that needs improving fluid flow hydrodynamic parameters through punched holes structure changing. Methods: simulation of fluid flow in the well-tube self-cleaning filter hydrodynamic task using the applicable software pack SolidWorks. Results. The paper describes the design of a particle-retaining borehole self-cleaning filter proposed by the authors and equipped with a system of rotating permanent magnets. The magnetic field created by rotation of the permanent magnets, provides a significant reduction in clogging processes. Further improvement of the design is associated with a decrease in hydraulic resistance, which prevents the pumped liquid from penetrating into the filter cavity. The paper introduces the technique for creating a simulation model to solve the internal hydrodynamic problem of fluid flow in a borehole self-cleaning filter using the SolidWorks application software. Simulation is intended to simulate fluid (water) passage through cylindrical holes in the filter wall in the direction from the outside to the inside. The authors have studied the hydrodynamic effects and the main physical parameters that occur as a result of fluid passing through cylindrical perforations. The performed simulation of the pumped fluid flow in the borehole self-cleaning filter made it possible to establish the optimal drilling pattern for perforation holes in the filter frame and the optimal filter length equal to 0,4 of the formation thickness.