METHOD OF OPERATING HIGH-VISCOSITY OIL PRODUCING WELLS Russian patent published in 2016 - IPC E21B43/25 E21B37/00 E21B47/00 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to the petroleum industry. Method of operating high-viscosity oil producing well comprises lowering into well an assembly, which consists from bottom-up of a perforated pipe, a packer, a bottom-hole pump, tubing string; actuation bottom-hole pump under action of movements of rod string, extracting high-viscosity oil via tubing string to well head. After beginning of extraction of high-viscosity oil, initial dynamogram is captured and initial maximum and minimum load on rod string is determined. Further, method includes extraction of high-viscosity oil via tubing string by sucker rod pump until rod string hangs. Then in tubing-casing annulus by geophysical elevator, logging cable is lowered with tip at end for pulsed high-frequency thermo-acoustic treatment of well so that tip is located below reception of sucker-rod pump, but 2 m above packer. Pulsed high-frequency thermo-acoustic treatment of well is performed without interruption of high-viscosity oil extraction by sucker-rod pump. During pulsed high-frequency thermo-acoustic treatment of well, periodic capture of dynamogram every 12 hours until restoration of maximum and minimum load on stem to not more than 5 % below initial values is performed. Then, without interruption of extraction of high-viscosity oil, treatment of well is stopped and logging cable with tip is removed from tubing-casing annulus.

EFFECT: improving operational efficiency of producing high-viscosity oil wells, higher quality of cleaning of downhole equipment from asphalt, resin, and paraffin deposits, reduced load on rod string of sucker-rod pump.

1 cl, 1 dwg, 3 ex