METHOD OF ELIMINATION AND PREVENTION OF FORMATION OF ASPHALTENE-RESIN-PARAFFIN DEPOSITS IN OIL WELLS AND OIL PIPELINES AND PLANT FOR ITS IMPLEMENTATION Russian patent published in 2013 - IPC E21B37/00 

FIELD: oil and gas industry.

SUBSTANCE: this group of inventions is meant for elimination and prevention of formation of asphaltene-resin-paraffin deposits in oil wells and oil pipelines. Power supply cable is lowered in well casing string to the length from wellhead to bottom-hole zone or to the length of probable formation of asphaltene-resin-paraffin deposits, N number of discharge units is fixed on the cable and each discharge unit is used for treatment of a certain section of casing string by voltage pulses. This results in discharge on any of discharge switchers, place of discharge is locally heated thus inducing controlled electro-hydrodynamical shockwaves, solids in oil liquid in the product are destroyed, product viscosity is lowered, precipitation of asphaltene-resin-paraffin deposits is prevented and precipitated asphaltene-resin-paraffin deposits are eliminated. The plant contains power supply cables putted into casing string on which discharge units are installed composed of electrically interconnected data receive-transmit unit on located on the surface of control unit, power supply unit, controller, ultrasonic scanning unit, unit of receiving and processing of sensors signals, unit of control of pulse generator pulse parameters, capacitors battery charger, unit of pulses distribution to discharge switchers, pulse generator and capacitors battery.

EFFECT: reducing power consumption; increasing well flow rate.

27 cl, 2 dwg