METHOD FOR ION-PLASMA PULSE ACTION ON LOW-WATERED OIL AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2021 - IPC E21B43/25 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to the oil and gas industry, in particular to methods for intensifying the production of viscous oil. In particular, a method of ion-plasma pulse action on low-watered oil is proposed, including the processes of pumping a conductive liquid into it and passing through electrodes immersed in it, connected to sources of direct electric current and an electric pulse signal, and creating electrolysis processes and electrical discharges through the injected liquid to ensure the mode of electrochemical and ion-plasma processes in it. In this case, an electrolyte-oxidizer in the form of a suspension or a gel, including a gas-filled one, is used as a conductive liquid, which, through a capillary channel acting as a current conductor and placed in a cable connecting the electrodes and the signal source, is pumped directly into the discharge chamber formed by the cavity between an external tubular electrode and an internal tubular electrode of the coaxial discharge head through a channel in its internal electrode. The specified electrolyte-oxidizing agent enters into an exothermic chemical reaction with the products of high-temperature cracking and electrocracking of oil, formed as a result of ion-plasma processes in the discharge chamber under the influence of electric pulse signals. In this case, constant electric current is additionally used for the galvanic transfer of a substance from the outer electrode to the inner electrode. A device for implementing this method is also proposed.

EFFECT: increased oil recovery of wells due to the decomposition of formation waters, residual oil, oil bitumen, mineral clots and due to the depression-repression mode of the shock wave impact on the tubing walls and on the reservoir.

5 cl, 4 dwg