METHOD FOR ACTIVATING PERMEABILITY OF ROCKS IN DEVELOPMENT OF FLUID DEPOSITS Russian patent published in 2021 - IPC E21B43/16 E21B28/00 

FIELD: oil industry.

SUBSTANCE: invention relates to the oil industry and can be used for mining through boreholes after hydraulic fracturing and increasing the permeability of rocks in macro-volumes in the near-wellbore space. A method for activating the permeability of rocks during the development of fluid fields is proposed, which consists in placing on the surface of equipment for controlling the parameters of a resonant wave device, immersing a resonant wave device in the well to create an oscillatory process of a given frequency in the infrasonic, ultrasonic and high-frequency frequency ranges in the processed oil fluid in the area of oil production, and modulation of radiation pulses by resonant pulses of hydrocarbons of the processed oil fluid with the formation of standing waves. At the same time, to intensify the decrease in the viscosity of the processed oil fluid in the acoustic field by changing the thermodynamic state by partial heating - due to the absorption of elastic energy and the breaking of bonds in individual macromolecules of the processed oil fluid, and - destruction of rigid structural bonds of the clay-sand fraction during cavitation - the radiation intensity at infrasonic and high-frequency radiation frequency ranges should be at least 2 W/cm², and under ultrasonic exposure - at least 10 W/cm², depending on the ratio of the viscous component of the processed oil fluid, solutions and clay-sand fraction. Wherein the time of exposure to radiation for the intensification of cavitation is carried out considering the temperature and pressure conditions in the well at the level of the formation being exposed, and ranges from 5 to 20 minutes. At the same time, by means of an automatic control system, including sensors of the dynamic properties of the medium, by means of a numerical software device, the parameters of the operation of the generators are controlled.

EFFECT: invention increases the technological and operational efficiency of the hydrocarbon production process.

1 cl, 1 dwg