WELL BOTTOMHOLE ZONE VIBRO-WAVE TREATMENT METHOD Russian patent published in 2019 - IPC E21B43/25 E21B28/00 E21B43/16 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to oil and gas industry, in particular to devices for treatment of bottom-hole zones of wells. Method includes vibro-wave treatment of the bottomhole zone during the selection of formation fluids from the well. In this process, in the process of non-stationary treatment, the treatment of the bottomhole zone is carried out in stages. And at the first stage, pure water is pumped into the formation. At the second stage, together with the injection of clean water, a vibro-wave treatment of the bottomhole zone is performed. At the third stage, formation fluids are sampled. Vibro-wave treatment of the bottomhole zone simultaneously with the selection of formation fluids is carried out at the fourth stage. In this step-by-step treatment of the bottomhole zone is performed many times until the initial, before colmatation, permeability of the near-wellbore zone is restored.

EFFECT: technical result is an increase in the permeability of the bottomhole well zone and the depth of the formation treatment with an increase in the production well yield and maintaining the integrity of the bottomhole zone.

9 cl, 1 ex, 6 dwg, 1 tbl