DISCONNECTOR NON-HAZARDOUS WITH PREVENTER Russian patent published in 2017 - IPC E21B17/06 

FIELD: oil and gas industry.

SUBSTANCE: disconnector consists of the tool-joint box 1 with the tool-joint thread and the extension tool 2 of the upper collar 3 and the lower collar 4. The upper collar 3 is supplied with the hold-down flaps-the screw 8 and the sheer screws 9. In the extension tool 2 two bore backs 5 and 6 are executed, which are interconnected by the inclining bore back 7. The bore backs 5, 6, 7 on the extension tool 2 and the flap 8 on the collar 3 make the sliding joint. On the lower end of the extension tool 2, the fitting seat bushing 15 to install the sphere 16 and the densifier 17 is installed on the thread and fixed with the screw 14. The sphere 16 is joined with the fitting seat bushing 15 by the temporary steel string 25.

EFFECT: reliability growth at the running, cementing operations and disconnection of the column of the supporting and carrying pipes.

5 dwg