Theoretical justification of the process of changing the concentration of colmatant structures in the near-wellbore zone under vibro-impulse action

A wide range of wave and vibration methods are employed to restore the productivity of oil wells, aimed at increasing the permeability of the near-wellbore zone. A necessary step in these technologies is the removal of contaminating particles from the near-wellbore zone, with its sub-sequent transportation to the surface. However, action of wave fields can extend to greater depth. In addition, it can be effectively utilized to clean large areas of the reservoir. The aim of the study is to theoretically justify the process of altering the concentration of colmatant structures in the near-wellbore zone and within hydraulic fracturing (HF) fractures, without necessitating the ex-traction of broken colmatant particles to the surface. When wave fields generated within the well are applied, particles are moving deeper into the reservoir and dispersed over a wider clean area. The theoretical justification was conducted by the method of mathematical modeling. In the course of work, the task of reducing the concentration of contaminant particles in the studied area is formulated and solved, formulas for the change in the amount of sediment and absolute permeability are derived, calculations are made, and graphs are constructed. The results of this study can be applied to the development of a new vibro-wave technology aimed at improving well productivity.