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

FIELD: oil and gas industry.

SUBSTANCE: when implementing the above method, cable, on which electric discharge switches are fixed, is lowered to tubing through the length from head to bottom-hole zone or to the depth of possible formation of asphaltene-resin and paraffin deposits. Voltage pulses or packs of voltage pulses with required parameters are supplied via the cable to each of the discharge switches from the control unit (CU) located on the surface. Discharge is performed on any of the discharge switches irrespective of the other discharge switches or on any group of discharge switches, which is chosen from their total number, and local heating is performed at the discharge point. In order to monitor processes, signals are received from acoustic sensors, temperature sensors and pressure sensors, which are installed inside the tubing and intertube space. Thus, electro-hydrodynamical impact waves are initiated. Cables are connected to CU that consists of electrically interconnected power supply, controller, pulse generators, control unit of generator pulse parameters and other required units, including unit of acoustic sensors and temperature and pressure sensors.

EFFECT: reduction of power consumption; increase in well flow rate.

18 cl, 1 dwg