METHOD AND DEVICE FOR SEISMIC STIMULATION OF PRODUCTIVE HORIZONS OF OIL AND GAS PLANTS Russian patent published in 2018 - IPC E21B28/00 E21B43/25 

FIELD: mining.

SUBSTANCE: group of inventions relates to a method and an apparatus for generating shock waves in a wellbore. Method of creating shock waves in a wellbore filled with or partially filled with a liquid, to stimulate production horizons of oil and gas bearing strata, including positioning the device connected to the bottom of the tubing string downward into the wellbore, providing stroke length up L_str pumping unit of said device, determined by the following formula: where H₁ – length of the lower cylinder, L₂ – the distance between the upper part of the lower plunger and the lower part of the upper plunger, D₁ – diameter of the lower plunger, D₂ – diameter of the upper plunger, A_sw – the required amplitude of the generated shock wave, E – modulus of elasticity of the tubing material, d_r – diameter of the tubing rods.

EFFECT: enhanced oil recovery and increased oil production, as well as the possibility of continuous seismic exploration of the oil and gas bearing formation.

7 cl, 5 dwg