A liner string includes a liner hanger assembly and a liner hanger deployment assembly. The liner hanger assembly includes a liner hanger. The liner hanger includes a plurality of slips and a liner hanger actuation assembly configured to set the plurality of slips. The liner hanger deployment assembly is disposed within the liner hanger assembly. The liner hanger deployment assembly includes a setting tool configured to selectively allow fluid communication between a central bore of the setting tool and the liner hanger actuation assembly.

A liner string includes a liner hanger assembly and a liner hanger deployment assembly. The liner hanger assembly includes a liner hanger. The liner hanger includes a plurality of slips and a liner hanger actuation assembly configured to set the plurality of slips. The liner hanger deployment assembly is disposed within the liner hanger assembly. The liner hanger deployment assembly includes a setting tool configured to selectively allow fluid communication between a central bore of the setting tool and the liner hanger actuation assembly.

An outer diameter of a mandrel with a recess to accommodate lower slips with a larger thickness, a sealing element with a concave outer diameter to control a pressure differential caused by a Bernoulli Effect across the sealing element, and a disc that is selectively secured to a housing via a removable shear pin, wherein shear pins with different pressure ratings may be inserted into the housing.

An outer diameter of a mandrel with a recess to accommodate lower slips with a larger thickness, a sealing element with a concave outer diameter to control a pressure differential caused by a Bernoulli Effect across the sealing element, and a disc that is selectively secured to a housing via a removable shear pin, wherein shear pins with different pressure ratings may be inserted into the housing.

A packer for wells can include a body having a tubular shape, a sealing element having an upward end and a downward end and disposed around the body. The packer also includes a first prop upward of the sealing element, and a second prop downward of the sealing element. The first prop is configured to wedge under the upward end of the sealing element and the second prop is configured to wedge under the downward end of the sealing element to push the sealing element outward at both the upward end and the downward end.

A packer for wells can include a body having a tubular shape, a sealing element having an upward end and a downward end and disposed around the body. The packer also includes a first prop upward of the sealing element, and a second prop downward of the sealing element. The first prop is configured to wedge under the upward end of the sealing element and the second prop is configured to wedge under the downward end of the sealing element to push the sealing element outward at both the upward end and the downward end.

Backup rings for a sealing element system for a downhole bridge plug assembly may include a circumferentially-expandable backup ring body having an engaging ring surface. A beveled ring surface may extend from the engaging ring surface. An interior ring surface may extend from the beveled ring surface to the engaging ring surface. A ring opening may be formed by the beveled ring surface. A plurality of spiral ring slots may extend through the backup ring body from the engaging ring surface to the beveled ring surface. A plurality of expandable ring portions may extend between the plurality of spiral ring slots. An at least partially circumferentially-expanding ring sleeve may extend from the backup ring body. In some embodiments, an outer width or diameter of the ring sleeve may correspond to an outer width or diameter of the backup ring body. The ring sleeve may include a ring sleeve wall extending from the interior ring surface of the backup ring body. A sleeve interior may be formed by the ring sleeve wall. A plurality of sleeve slots may extend through the ring sleeve wall. The plurality of sleeve slots may communicate with the plurality of spiral ring slots, respectively, in the backup ring body. A plurality of expandable sleeve portions may extend between the plurality of sleeve slots. The plurality of expandable sleeve portions may extend from the plurality of expandable ring portions of the backup ring body.

Backup rings for a sealing element system for a downhole bridge plug assembly may include a circumferentially-expandable backup ring body having an engaging ring surface. A beveled ring surface may extend from the engaging ring surface. An interior ring surface may extend from the beveled ring surface to the engaging ring surface. A ring opening may be formed by the beveled ring surface. A plurality of spiral ring slots may extend through the backup ring body from the engaging ring surface to the beveled ring surface. A plurality of expandable ring portions may extend between the plurality of spiral ring slots. An at least partially circumferentially-expanding ring sleeve may extend from the backup ring body. In some embodiments, an outer width or diameter of the ring sleeve may correspond to an outer width or diameter of the backup ring body. The ring sleeve may include a ring sleeve wall extending from the interior ring surface of the backup ring body. A sleeve interior may be formed by the ring sleeve wall. A plurality of sleeve slots may extend through the ring sleeve wall. The plurality of sleeve slots may communicate with the plurality of spiral ring slots, respectively, in the backup ring body. A plurality of expandable sleeve portions may extend between the plurality of sleeve slots. The plurality of expandable sleeve portions may extend from the plurality of expandable ring portions of the backup ring body.

A self-destructible frac ball is described herein. The self-destructible frac ball is configured to seal a hydraulic flow path through a fluid conduit of a frac plug when engaged on a ball seat of the frac plug. The self-destructible frac ball includes an activation mechanism configured to activate a destructive medium in response to the satisfaction of at least one predetermined condition. The self-destructible frac ball also includes the destructive medium, which is configured to destroy the self-destructible frac ball and a corresponding destructible ball retainer when activated by the activation mechanism. The destruction of the self-destructible frac ball and the corresponding destructible ball retainer reestablishes the hydraulic flow path through the fluid conduit of the frac plug.

A self-destructible frac ball is described herein. The self-destructible frac ball is configured to seal a hydraulic flow path through a fluid conduit of a frac plug when engaged on a ball seat of the frac plug. The self-destructible frac ball includes an activation mechanism configured to activate a destructive medium in response to the satisfaction of at least one predetermined condition. The self-destructible frac ball also includes the destructive medium, which is configured to destroy the self-destructible frac ball and a corresponding destructible ball retainer when activated by the activation mechanism. The destruction of the self-destructible frac ball and the corresponding destructible ball retainer reestablishes the hydraulic flow path through the fluid conduit of the frac plug.