FIELD: oil and gas industry, particularly injection and production well maintenance and overhaul, namely well bottom cleaning of sand and proppant plugs, formation injuries and small metal items.
SUBSTANCE: device comprises cylindrical body with cavity and valve to be connected to pipe string. The body is provided with end and radial water jet channels to establish communication between above cavity and hole annuity. The water jet channels are inclined with respect to the body axis. The valve is made as shutter pivotally connected with thrust collar. The thrust collar is secured inside the device body in air-tight manner. When flushing fluid is injected in the pipe string the shutter is tightly pressed to the thrust collar. When flushing fluid is injected in the hole annuity the shutter is opened. Water jet channels are created in the shutter.
EFFECT: increased operational capabilities along with simplified structure.
5 cl, 1 dwg
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