METHOD FOR VIBRO-WAVE ACTION IN ORDER TO RESTORE THE PRODUCTIVITY OF WELLS WITH HYDRAULIC FRACTURING Russian patent published in 2022 - IPC E21B43/25 E21B43/16 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to the oil and gas industry, namely to methods of vibro-wave action on the downhole zone of the reservoir by elastic wave vibrations of the working fluid and can be used at injection and production wells with various technological operations. A method for vibro-wave action on a well with hydraulic fracturing, according to which a wave hydraulic monitor located at the end of the tubing is lowered into the perforation interval. The working fluid is pumped into the tubing and a traveling pressure wave with a frequency of 2 Hz is created through the specified wave hydraulic monitor. The hydraulic monitor is moved along the perforation interval with a continuous supply of working fluid and a step-by-step treatment of the perforation interval is carried out with the resulting field of low-frequency traveling waves. In this case, the particles of the destroyed contaminants are transferred by the flow of the injected working fluid through the cleaned fractures of the hydraulic fracturing deep into the formation and dispersed beyond the proppant pack. The remains of particles in the downhole zone are dissolved with chemical compositions in a vibro-pulse mode with the implementation of measures for the development of the well.

EFFECT: increase in the efficiency of cleaning the proppant crack of the oil reservoir from contamination.

1 cl, 6 dwg