ANTIFLYING ANCHOR Russian patent published in 2018 - IPC E21B23/00 E21B33/129 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to oil industry and can be used for oil extraction by electric centrifugal pumps. Antiflying anchor contains a tube for the passage of liquid with a support sleeve rigidly mounted in the upper part, a shock-absorbing unit in the form of a compression spring with a cone-shaped piston arranged on the pipe and an anchoring mechanism having sliding dies. Cone-shaped piston is fixed on the pipe with the help of a soluble element. As a soluble element, a radial pin passing through the pipe or a ring located under the base of the piston can be used.

EFFECT: technical result is a simplification of putting the anchor into functional condition operation and high reliability of the device activation.

5 cl, 6 dwg