FIELD: well plugging and abandonment systems.
SUBSTANCE: group of inventions is claimed, including a well abandonment plug and a well plugging and abandonment system. The technical result is the creation of an improved and simplified system of plugging and well abandonment. A well abandonment plug for plugging and well abandonment comprises a first end portion capable of being closed or closed. It also contains a second end part made tubular and having a groove on the inner surface. It also contains an expandable metal sleeve located between the end parts. The end pieces are more rigid than the expandable metal sleeve. It also contains a module connected with the possibility of detachment with the second tubular end part. The module contains at least one radially extendable fastening element. The plug also contains a module coupling. It also contains a piston movable in the module coupling in such a way that in the first position the radially retractable fastener can be moved outward in the radial direction into engagement with the groove, and in the second position it can be offset relative to the radially retractable fastener, providing the ability to move the radially retractable fastener inward in the radial direction. The plug also contains a first destructible element for holding the piston in a first position relative to the module coupling until the destructible element fails under the influence of a predetermined force.
EFFECT: creation of an improved and simplified system of plugging and well abandonment.
14 cl, 23 dwg
