ON/OFF TOOL Russian patent published in 2017 - IPC E21B17/06 E21B23/06 

FIELD: oil and gas industry.

SUBSTANCE: on/off tool includes a threaded body, a gripping element connected to the body inside which the sealing element is located, a threaded tip mounted inside the body with an annular projection on the outer surface. The gripping element is located outside the tip and, together with the housing and sealing element attached to it, is able to move along the outer surface of the tip up and down in a connection state, forming a smooth, without ledges, cylindrical surface of the passageway in the inner cavity of the tip and the body in the connection state. At the same time, the gripping element in the lower part is made in the form of a collet, the elastic blades of which are formed by a belt of closed longitudinal slots. Moreover, the elastic blades of the collet in the middle part have annular protuberances of the trapezoidal profile from the inside, and the annular protrusion of the tip has a trapezoidal profile.

EFFECT: reduced influence of the extracted product components deposits, maintaining service of the on/off tool with the packer system, followed by a resetting and a hermetic connection.

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