DOUBLE-BARREL PACKER AND DEVICE FOR CABLE SEALING CONDUCTING BETWEEN PACKER'S EXTERNAL AND INTERNAL BEDS Russian patent published in 2018 - IPC E21B33/12 H02G15/32 

FIELD: manufacturing technology.

SUBSTANCE: group of inventions refers to a double-barrel packer and a device for sealing a packer. Double-barrel packer comprises an outer and an inner trunk inserted one into the other and forming a longitudinal channel, a cable sealing device located at the top of the packer, a sealing, a lower anchoring, connecting and centering unit. Centering unit is located at the bottom of the packer. Between the connecting and centering assemblies, a pusher and a hydraulic drive are installed. Hydraulic actuator consists of a piston with external thrust thread and a cylinder provided with a split ratchet ring having a reciprocal thrust thread on the inner surface cooperating with the piston. Piston has the possibility of axial movement upward with respect to the cylinder. Above the pusher is installed a lower case, which connects it with the lower anchor unit. At the bottom of the hydraulic drive is a plug, screwed with a cylinder and fixed on the inner trunk with the help of locks.

EFFECT: improvement of the efficiency of fixing the packer, simplification of the installation process of the device to seal the cable in the packer at the wellhead, and improvement of the reliability of the device.

5 cl, 4 dwg