INSTALLATION FOR OIL WELLS RECOVERY Russian patent published in 2009 - IPC E21B37/08 

FIELD: oil and gas industry.

SUBSTANCE: invention refers to oil and gas industry and is designed for cleaning walls of wells from paraffin. The installation consists of a steam generator, of rods, of a sprayer, and a valve; not less, than two encased steam generators are assembled on the surface, are connected between them with pipes and are made in form of external pipes, in the cavities of which internal pipes are installed. The internal pipes are resting on plugs of external pipes on the left and right sides wherein there are installed ceramic coils with heating wires connected to the secondary winding of transformers, the primary windings of which are connected to wires of electric circuit; the coils are arranged on the surface of the case on the ends of the internal pipes. The sprayer made in one of the plugs of each steam generator is connected via a pipeline to a pump, building pressure to 30-50 MPa. The pump is connected to a tank with water or with water main by means of a valve. The central steam generator is connected to rods wound with a layer of heat insulating material in form of glass wool and a steel band. On the lower side of the rods there are made sprayers with valves arranged along the whole height of oil reservoir. A plug is installed on the end of the lower rod.

EFFECT: increased efficiency of installation.

1 dwg