FACILITY FOR HYDRODYNAMIC WELL TREATMENT Russian patent published in 2006 - IPC E21B43/16 

FIELD: oil production industry, particularly equipment for hydrodynamic well treatment by high-speed liquid jet application to productive formations not closed with casing pipe.

SUBSTANCE: facility comprises hydraulic monitor body with nozzles arranged in side orifices thereof. The nozzles have axes offset relative horizontal plane. The facility is provided with centering fixer made as hollow body. Filter is connected to inner surface of the hollow body. Connected to annular hollow body surface is rubber sealing member. At least three through orifices are formed in the body so that the orifices pass through the rubber sealing member. Metal connection pipes are cured in the orifices so that the metal connection pipes may be freely displaced relatively vertical body axis. The facility is also provided with rubber damping means located over centering fixer. One additional hydraulic monitor body is also provided. The additional hydraulic monitor body comprises nozzles arranged in side orifices or with nozzle and with cap located from opposite body sides. Nozzle axes are offset relatively horizontal plane. The nozzles are rectangular and nozzle ends are spaced a distance equal to 6-10 equivalent nozzle diameters from rock. Angle is equal to 7°-8°. Centering fixer is also provided. Check valve with stem is connected to the centering fixer. The centering fixer is made as hollow body provided with filter connected to inner body surface and with rubber sealing member fastened to annular surface thereof. Both hydraulic monitor bodies are connected one to another by length-adjustable steel pipe.

EFFECT: possibility of hydraulic treatment of uncased horizontal wells, simplified structure, increased reliability and output.

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