OIL WELL RECOVERY SYSTEM Russian patent published in 2009 - IPC E21B37/08 

FIELD: oil and gas industry.

SUBSTANCE: invention refers to oil industry, specifically to cleaning out. The system contains surface steam generator, oil blanket generator designed as inner blank-flanged pipe with nozzle adapting pipe and channel containing ceramic insulator with incandescent wire and connected to secondary and primary windings of the transformer arranged in the cavity of the inner pipe from upper party of ceramic insulator. The inner pipe is mounted in the cavity of the outer pipe of steam generator, which contains valved nozzles. From underside, the outer pipe is welded to blank flange, and from upper side to the adapting pipe. The transformer is connected to cable wires and power network wires. The inner pipe is supported from the left and right side by blank flanges of the outer pipe of steam generator wherein ceramic insulators with incandescence wires are arranged, thus connected with secondary and primary windings of the transformers in the cavity of the inner or from bearing faces, and power network wires. The nozzle provided in the right blank flange is connected to the pump of pressure 30-50 MPa, the gate and water tank, the pipeline. Working temperature of water and steam in surface steam generator is 300°-550°C at pressure 35-50 MPa. In oil blanket steam generator, steam temperature is maintained 300°-550°C at pressure 35-50 MPa. Temperature of heated pipes is 700°-1200°C. Rods are wrapped with heat-proofing layer 1-500 mm. Channels cleaning is provided within oil blanket height.

EFFECT: channels cleaning within oil blanket height.

2 cl, 1 dwg