The present invention relates to an annular barrier for providing zonal isolation in an annulus downhole between a well tubular metal structure and another well tubular metal structure or a wall of a borehole, comprising a tubular metal part configured to be mounted as part of the well tubular metal structure, the tubular metal part having an outer face, an opening and an axial extension along the well tubular metal structure, an expandable metal sleeve surrounding the tubular metal part, the expandable metal sleeve having a circumferential groove, a first end and a second end, each end of the expandable metal sleeve being connected with the outer face of the tubular metal part, and a sealing unit arranged in the circumferential groove, the annular sealing unit comprising an annular sealing element and a back-up sealing element abutting and supporting the annular sealing element, wherein the annular sealing element in a cross-section along the axial extension has a first width, a second width and a third width; the second width is larger than the first width and the third width and is arranged between the first width and the third width; the back-up sealing element has a first contact area, and the annular sealing element has a second contact area, where the first contact area has a shape that mates with the second contact area. The invention also relates to a downhole completion system comprising an annular barrier and a well tubular metal structure.

The present invention relates to a downhole packer assembly for expansion of a metal sleeve, such as a metal patch, in a well downhole in a well tubular metal structure, comprising a body part and an expandable tubular element surrounding the body part and each end of the expandable tubular element being connected with the body part, providing an expandable space therebetween, the expandable space being fillable with liquid during expansion, the expandable tubular element having an outer face and an inner face, the expandable tubular element comprising an elastomeric or rubber material having a friction coefficient, wherein the expandable tubular element comprises a friction-enhancing material providing a higher friction coefficient of the outer face than the friction coefficient of the elastomeric or rubber material. The invention also relates to a downhole system comprising the downhole packer assembly and a positive displacement pump for expanding the expandable tubular element.

A liner hanger having one: or more enhanced Socking assemblies is provided. The liner hanger includes a liner hanger body, lower slips, upper slips, a packer cone, and a seal that seals an annulus between the liner hanger and an outer casing, The one or more enhanced locking assemblies may include: a packer cone locking assembly that prevents all components of the liner hanger from actuating until it is unlocked; a slips locking assembly that prevents the lower slips from being actuated until it is unlocked; guide rails that prevent. the lower slips and/or the upper slips from being wedged in a radially outward direction during run in; and a floating cone locking assembly that releases the packer cone from being coupled to a spacer of the liner hanger when it is unlocked.

A pipe coupling device includes a body configured to connect a first pipe segment to a second pipe segment, a sealing device carried by the body, and an activation unit. The sealing device includes a circumferential element including a first material and a peripheral element connected to an edge of the circumferential element and including a second material that is different from the first material. The activation unit is configured to adjust the sealing device to an activated state in which the sealing device extends radially from the body to form at least a portion of a seal with a pipe that surrounds the body, such that the seal fluidically isolates a first annular region between the first pipe segment and the pipe along a first side of the seal from a second annular region between the second pipe segment and the pipe along a second side of the seal.

The present disclosure describes systems and methods for flow-activated plug assembly flow seat initiation, which in some aspects may comprise sealing a plug within a downhole bore, and may include a plug assembly comprising a frustoconical tube; a tubular mandrel positioned longitudinally through the frustoconical tube and having port(s) fluidly connecting a mandrel bore with the bore of the frustoconical tube, and having a shear ring extending from the mandrel; and a ball configured to fluidly seal the proximal end of the tubular mandrel; wherein the tubular mandrel is configured to move between a first position having a fluid passageway through the ports and a second position wherein the shear ring has been sheared away when a predetermined fluid pressure is applied to the plug assembly and the tubular mandrel is positioned relative to the frustoconical tube such that the port(s) are blocked, closing the fluid passageway.

A liner hanger having one: or more enhanced Socking assemblies is provided. The liner hanger includes a liner hanger body, lower slips, upper slips, a packer cone, and a seal that seals an annulus between the liner hanger and an outer casing, The one or more enhanced locking assemblies may include: a packer cone locking assembly that prevents all components of the liner hanger from actuating until it is unlocked; a slips locking assembly that prevents the lower slips from being actuated until it is unlocked; guide rails that prevent. the lower slips and/or the upper slips from being wedged in a radially outward direction during run in; and a floating cone locking assembly that releases the packer cone from being coupled to a spacer of the liner hanger when it is unlocked.

The present invention relates to a downhole packer assembly for expansion of a metal sleeve, such as a metal patch, in a well downhole in a well tubular metal structure, comprising a body part and an expandable tubular element surrounding the body part and each end of the expandable tubular element being connected with the body part, providing an expandable space therebetween, the expandable space being fillable with liquid during expansion, the expandable tubular element having an outer face and an inner face, the expandable tubular element comprising an elastomeric or rubber material having a friction coefficient, wherein the expandable tubular element comprises a friction-enhancing material providing a higher friction coefficient of the outer face than the friction coefficient of the elastomeric or rubber material. The invention also relates to a downhole system comprising the downhole packer assembly and a positive displacement pump for expanding the expandable tubular element.

A pipe coupling device includes a body configured to connect a first pipe segment to a second pipe segment, a sealing device carried by the body, and an activation unit. The sealing device includes a circumferential element including a first material and a peripheral element connected to an edge of the circumferential element and including a second material that is different from the first material. The activation unit is configured to adjust the sealing device to an activated state in which the sealing device extends radially from the body to form at least a portion of a seal with a pipe that surrounds the body, such that the seal fluidically isolates a first annular region between the first pipe segment and the pipe along a first side of the seal from a second annular region between the second pipe segment and the pipe along a second side of the seal.

A downhole tool has a setting cone including a body having an outer surface having a first end, a second end. At least a portion of the body includes a taper at the second end. A passage extends through the body. The passage includes a first portion having a first diameter and a second portion having a second diameter that is less than the first diameter. An anchor is arranged at the second end of the setting cone. The anchor includes a central passage that aligns with the passage through the setting cone. A mandrel extends through the passage of the setting cone and the central passage of the anchor. The mandrel includes a first end portion, a second end portion and an intermediate section. A conduit extends from the first end portion toward the second end portion. A portion of the conduit defines an actuation chamber.

A downhole tool has a setting cone including a body having an outer surface having a first end, a second end. At least a portion of the body includes a taper at the second end. A passage extends through the body. The passage includes a first portion having a first diameter and a second portion having a second diameter that is less than the first diameter. An anchor is arranged at the second end of the setting cone. The anchor includes a central passage that aligns with the passage through the setting cone. A mandrel extends through the passage of the setting cone and the central passage of the anchor. The mandrel includes a first end portion, a second end portion and an intermediate section. A conduit extends from the first end portion toward the second end portion. A portion of the conduit defines an actuation chamber.