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.

Methods of capturing carbon dioxide in a wellbore can include installing a sealing element in the wellbore. The sealing element swells in the presence of carbon dioxide and can be used for capturing the carbon. The sealing element can include a carbon-swelling material, such as a carbon-swelling polymers, metal-based materials, or combinations of elastomeric polymers and metal-based materials. The sealing element can also include combinations of different carbon-swelling materials, fillers or other compounds, and materials that are not carbon swellable. The sealing element can create a seal, form an anchor, or create a seal and form an anchor in the wellbore after swelling.

The present invention relates to a downhole expandable metal tubular to be expanded in a well from a first outer diameter to a second outer diameter to abut against an inner face of a casing or borehole, the downhole expandable metal tubular having an axial extension, a circumference and an outer face, wherein the downhole expandable metal tubular is of metal with at least one first integral circumferential sealing element of metal as part of the outer face, providing the downhole expandable metal tubular with a first circumferential projection having a fourth height, and the at least one first integral circumferential sealing element at least partly defines a cavity having an opening. Moreover, the present invention also relates to a downhole expandable metal tubular assembly further comprising at least one end tubular, a patch for being expanded within a well tubular metal structure for sealing off leaks, perforations or apertures in the well tubular metal structure, and an annular barrier to be expanded in an annulus between a well tubular structure and an inner face of a borehole or a casing downhole for providing zone isolation between a first zone and a second zone of the borehole.

A subterranean zone fluid sample tool includes an elongated tubular tool body configured to be disposed within a wellbore formed in a subterranean zone including multiple formations. The tool body includes multiple axial portions. The tool body has a length sufficient for a respective axial portion of the multiple axial portions to reside in each formation of the multiple formations. The tool includes multiple fluid sample probes configured to sample fluids in the multiple formations. The multiple fluid sample probes are radially offset from each other on a circumferential surface of the tool body. Each fluid sample probe is attached to a respective axial portion of the tool body that is configured to reside in a respective formation. The multiple fluid sample probes are configured to simultaneously sample fluids in the respective formation.

The present disclosure relates to downhole tools and related methods that accelerate wormhole initiation and propagation during matrix acidizing of a hydrocarbon-bearing subterranean rock formation.

The present disclosure relates to downhole tools and related methods that accelerate wormhole initiation and propagation during matrix acidizing of a hydrocarbon-bearing subterranean rock formation.

Methods and systems for producing fluids from a subterranean well include forming the subterranean well having at least one lateral wellbore. The lateral wellbore is completed with a lateral production tubular. The lateral wellbore is subdivided into subsequent lateral segments. Each lateral segment is defined by a downhole lateral packer and an uphole lateral packer that seal an annular lateral space defined by an outer diameter surface of the lateral production tubular and an inner diameter surface of the lateral wellbore. A main production tubular extends into the subterranean well, the main production tubular including a lateral access system that provides selective access to the lateral wellbore. A flow of a fluid within the lateral segment is controlled with an inflow control device of the lateral segment. The inflow control device is mechanically adjusted by a tool that is delivered to the inflow control device through the lateral access system.

The present invention relates to an annular barrier for providing isolation of a zone in a well having an isolation layer of less than 5 metres, comprising a tubular metal part configured to be mounted as part of a well tubular metal structure, the tubular metal part having an outer face, an opening and an axial extension along the well tubular metal structure, a first expandable metal sleeve surrounding the tubular metal part, the first expandable metal sleeve having a first thickness, a first end and a second end, the first end of the expandable metal sleeve being connected with the outer face of the tubular metal part, a second expandable metal sleeve surrounding the tubular metal part, the second expandable metal sleeve having substantially the same thickness as the first expandable metal sleeve, and the second expandable metal sleeve having a first end connected with the outer face of the tubular metal part and a second end, wherein the annular barrier further comprises a first connecting sleeve having a second thickness being greater than the first thickness, the first connecting sleeve comprises a first sleeve end connected to the second end of the first expandable metal sleeve and a second sleeve end connected with the second end of the second expandable metal sleeve, and the annular barrier comprises an annular space defined between the tubular metal part, the first connecting sleeve and the expandable metal sleeves. The invention also relates to a downhole system comprising a plurality of the annular barriers and the well tubular metal structure.

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, and an expandable metal sleeve surrounding the tubular metal part, the first 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, wherein the annular barrier further comprises an anchoring element arranged in the circumferential groove, the anchoring element comprising a first anchoring part at least partly overlapping a second anchoring part in a radial direction perpendicular to the axial extension so that an inner face of the first anchoring part at least partly abuts an outer face of the second anchoring part. Moreover, the present invention relates to a downhole completion system.

A frac system includes a first packer assembly having a first compression set packer and a first indexing member, and a second packer assembly arranged upstream of the first packer assembly. The second packer assembly includes a second packer, a second indexing member, a bypass inlet arranged upstream of the second packer, and a frac port arranged downstream of the second packer. The bypass inlet is fluidically connected to the frac port through a bypass flow path and is selectively opened without disengaging the second packer.