CASING RUNNER DRIVE UNIT Russian patent published in 2023 - IPC E21B7/20 E21B43/10 

FIELD: oil and gas.

SUBSTANCE: drive assembly of the casing runner contains a hollow body, in which a nut with a friction mechanism is installed, a hollow rod, which is made up of two parts - the upper and the lower, which can be extended from it, connected to each other on pivots. At the upper end of the lower part of the rod, a shut-off valve with a liquid supply channel is installed, coupled with an annular seal installed in the upper part of the rod in the raised position of the lower part of the rod, with the possibility of closing the liquid supply channel. The lower part of the rod has an annular seal installed below the shut-off valve and mated with the sleeve seal made on the inner surface of the upper part of the rod when extending the lower part of the rod; a cap is made at the lower end of the lower part of the rod to fix the packer on it. The upper part of the rod contains an external thread that interacts with the body nut, forming a screw-nut mechanical transmission.

EFFECT: increased speed of installation of the casing string.

1 cl, 1 dwg