Abstract: A downhole system for completing a well includes a well tubular metal structure including an inside having an inside pressure, an opening and an axial extension, and a sliding sleeve movable along the axial extension between a first position in which the sliding sleeve seals off the opening and a second position in which fluid communication between the borehole and the inside of the well tubular metal structure is allowed. The sliding sleeve has a first sealing element arranged on one side of the opening and a second sealing element arranged on the other side of the opening in the first position A pressure reducing mechanism is arranged in relation to the first sealing element for reducing a pressure exerted on the first sealing element while moving the sliding sleeve from the first position to the second position.

Abstract: The present invention relates to an annular barrier system for completing a well with a well tubular metal structure, comprising the well tubular metal structure comprising a first annular barrier and a second annular barrier, each annular barrier being introduced and set in the well to abut a wall of the well providing a confined space having a confined pressure between the wall, part of the well tubular metal structure, the first annular barrier and the second annular barrier, so that the first annular barrier isolates the confined space from a first annulus having a first pressure and the second annular barrier isolates the confined space from a second annulus having a second pressure, wherein the annular barrier system comprises a pressure equalising unit having a first position in which the first annulus is in fluid communication with the confined space and a second position in which the second annulus is in fluid communication with the confined space, in the first position the second pressure is higher

Abstract: The present invention relates to an annular barrier to be expanded in an annulus between a well tubular metal structure and a wall of a borehole or another well tubular metal structure in a well in order to provide zone isolation between a first zone having a first pressure and a second zone having a second pressure of the borehole, the annular barrier comprising a tubular metal part adapted to be mounted as part of the well tubular metal structure, an expandable metal sleeve surrounding the tubular metal part, each end of the expandable metal sleeve being connected with the tubular metal part defining an annular space between the expandable metal sleeve and the tubular metal part. The annular barrier further comprises a valve unit having an initial position and an end position, the valve unit comprising a first aperture in fluid communication with the inside, a second aperture in fluid communication with the annular space, a third aperture in fluid communication with the annulus.

Abstract: The present invention relates to a downhole transfer system for transferring data through a well tubular metal structure arranged in a borehole of a well, comprising a well tubular metal structure having an axial direction and being arranged in the borehole providing an annulus between the borehole and the well tubular metal structure, a transceiver assembly comprising a tubular metal part mounted as part of the well tubular metal structure, the tubular metal part having an inner face, an outer face and a wall, an assembly conductive winding, such as a copper ring, connected with the inner face, a power consuming device, such as a sensor, arranged in the annulus and connected with the outer face and the power consuming device is connected to the assembly conductive winding by means of an electrical conductor, a downhole tool comprises a tool body, a tool body outer face and a tool conductive winding, wherein the assembly conductive winding has an axial extension along the axial direction and a radial extensio

Abstract: An annular barrier is expandable in an annulus between a well tubular structure and an inside wall of a borehole downhole for providing zone isolation between a first zone and a second zone of the borehole. The annular barrier has a tubular part for mounting as part of the well tubular structure, an expandable metal sleeve surrounding the tubular part and having an inner face facing the tubular part and an outer face facing towards the inside wall of the borehole, each end of the expandable metal sleeve being connected with a connection part which is connected with the tubular part, a space between the inner face of the expandable metal sleeve and the tubular part, and an expansion opening in the tubular part through which fluid may enter into the space in order to expand the expandable metal sleeve.

Abstract: The present invention relates to a downhole completion system for providing a well tubular metal structure in a borehole of a well having a top, comprising a well tubular metal structure configured to be arranged in the borehole.

Abstract: The present invention relates to a downhole straddle system for sealing off a damaged zone in a well tubular metal structure in a well having a top, comprising: a straddle assembly having a first end, a second end closest to the top, an inner face, a first hydraulic expandable annular barrier and a second hydraulic expandable annular barrier, a downhole tool assembly having a hydraulic operated deployment tool for releasable connecting the downhole tool assembly to the second end of the straddle assembly, the downhole tool assembly further comprising a first sealing unit arranged above the first hydraulic expandable annular barrier and the second hydraulic expandable annular barrier and configured to seal against the inner face of the straddle assembly, and a closing unit configured to close the first end of the straddle assembly, wherein the downhole tool assembly further comprising a sealing device arranged above the deployment tool and the first sealing unit, the sealing device has an annular sealing eleme

Abstract: The present invention relates to a downhole completion system for completing a well having a borehole, said downhole completion system comprising a well tubular metal structure arranged in the borehole forming an annulus and comprising a wall and a plurality of sensor units forming a mesh network, wherein at least a number of said sensor units is provided with a self-powering device configured to harvest energy downhole. Furthermore, the present invention relates to a sensor unit for use with a downhole completion system according to the present invention.

Abstract: The present invention relates to a downhole well tubular structure configured to be arranged in a borehole in a formation, comprising a well tubular part having an opening and an inner face, the well tubular part having an axial extension, a first sleeve configured to slide within the well tubular part along at least part of the inner face, the first sleeve having a first end face and a second end face, the first sleeve having a first sleeve groove facing away from the well tubular part, the first sleeve groove of the first sleeve having a first groove face extending radially and facing away from the first end face, and the first sleeve groove of the first sleeve having a second groove face inclining away from the first groove face, wherein the well tubular part has a first inclined face facing the first end face of the first sleeve, the first inclined face inclining from the inner face away from the first sleeve, wherein the well tubular part comprises a second inclined face facing the first inclined face, t

Abstract: The present invention relates to an annular barrier for being mounted as part of a well tubular metal structure for providing zonal isolation in a small diameter borehole downhole for isolating a first zone from a second zone, comprising an expandable metal sleeve having a first end and a second end and an outer face facing the borehole, a first end part having a first end connected to the first end of the expandable metal sleeve and a second end for being mounted as part of the well tubular structure, a second end part having a first end connected to the second end of the expandable metal sleeve and a second end for being mounted as part of the well tubular structure, wherein the first end of the first end part is connected end to end to the first end of the expandable metal sleeve, and the first end of the second end part is connected end to end to the second end of the expandable metal sleeve, and wherein the second ends of the end parts are provided with male or female thread connections for being mounted

Abstract: A downhole repairing system includes a downhole straddle assembly for straddling over a zone downhole in the well having a plurality of tubular sections. A downhole setting tool string has a tubular tool part with expansion openings for allowing pressurised fluid to flow out to expand expandable metal sleeves. The first end tubular section has a groove for receiving at least one retractable engagement part of a connection tool of the downhole setting tool string, and the second outer tool diameter is smaller than the second end inner diameter creating a first sealed distance which is less than 2 mm.

Abstract: The present invention relates to a downhole expandable metal tubular having an axial extension, to be expanded in a well downhole to abut against an inner face of a casing or a borehole, comprising a first section having a first outer diameter, two circumferential projections having a second outer diameter which is larger than the first outer diameter, a second section arranged between the two projections, each projection having an inclined face tapering from the second outer diameter towards the second section, wherein the second section has a third outer diameter which is smaller than the first outer diameter in an unexpanded condition, and a sealing element is arranged between the projections opposite the second section, so that during expansion the second section bulges more radially outwards than the first section, forcing the sealing element radially outwards. Furthermore, the present invention relates to an annular barrier, a downhole completion and a sealing expansion method.

Abstract: An annular barrier to be expanded in an annulus between a well tubular structure and a wall of a borehole downhole includes a tubular metal part having a first expansion opening, an axial extension and an outer face, an expandable sleeve surrounding the tubular metal part and having an inner face facing the tubular metal part and an outer face facing the wall of the borehole, each end of the expandable sleeve being connected with the tubular metal part, and an annular space between the expandable sleeve and the tubular metal part. Fluid inside the tubular metal part has a tubular pressure, and the annular barrier has an expansion unit having a first inlet in fluid communication with the expansion opening, a second inlet in fluid communication with the first zone and an outlet in fluid communication with the annular space.

Abstract: A downhole tubular assembly configured to be mounted as part of a well tubular structure in a borehole of a well having a top, has a well metal tubing configured to be mounted as part of the well tubular structure. A tubular metal receptacle has an inner receptacle diameter larger than the outer diameter of the well metal tubing, and a second part extending from the first part towards the well metal tubing. The tubing length is larger than the receptacle length, and the a wall of the well metal tubing extends inside the tubular metal receptacle along the entire length of the tubular metal receptacle, and the second part of the tubular metal receptacle is fastened to the outer face of the well metal tubing, thereby closing the tubular metal receptacle in one end and defining an annular space between the tubular metal receptacle and the well metal tubing.

Abstract: The present invention relates to an annular barrier for isolating a production zone, the annular barrier having a first end and a second end, comprising: a tubular metal part for mounting as part of a well tubular metal structure, the tubular metal part having an outer face, an expandable metal sleeve surrounding the tubular metal part and having an outer face facing a wall of a borehole, each end of the expandable metal sleeve being connected with the tubular metal part, an annular space arranged between the expandable metal sleeve and the tubular metal part, the expandable metal sleeve being configured to expand by pressurised fluid entering the annular space, a first tubular metal connection assembly surrounding the tubular metal part connecting one end of the expandable metal sleeve with the tubular metal part and a second tubular metal connection assembly surrounding the tubular metal part connecting the other end of the expandable metal sleeve with the tubular metal part, each tubular metal connection a

Abstract: A drill string has a first part and a second part closer to a top of the well. The first part has a drilling head and an annular barrier with a tubular metal part, an expandable metal sleeve and an annular space between the inner face of the expandable metal sleeve and the tubular metal part. Drilling is commenced and then stopped when a loss of formation pressure is detected. A ball is dropped into the drill string and the drill string is pressurized. The expandable metal sleeve is expanded with pressure until the expandable metal sleeve abuts the inner face of the borehole. The second part of the drill string is separated from the first part and pulled out of the borehole. Cement is injected into the borehole above the first part to provide a cement plug above the first part.

Abstract: The present invention relates to an annular barrier for being expanded in an annulus between a well tubular structure and a wall of a borehole or another well tubular structure downhole for isolating a first zone from a second zone in the annulus, the annulus having an annulus pressure, the annular barrier comprising: a tubular part for being mounted as part of the well tubular structure, the tubular part comprising an inside having an inside pressure, an expandable sleeve surrounding the tubular part and having an inner face facing the tubular part and an outer face facing the borehole or the wall, each end of the expandable sleeve being connected with the tubular part, an annular space between the inner face of the expandable sleeve and the tubular part, the annular space having a space pressure, and a valve system having a first system position in which fluid communication is provided between the inside of the tubular part and the annular space and a second system position in which fluid communication is p

Abstract: The present invention relates to a downhole system for unloading a liquid of a well in an annulus between an intermediate casing and a production tubular metal structure.

Abstract: Downhole completion system (100) arranged in a borehole, comprising a production casing (2) having an axial extension with an opening (4) for providing fluid communication between the borehole and the inside of the casing, a sleeve (5) arranged at least partly movably along or rotatably around the axial extension for opening, choking or closing the fluid communication and a sleeve control (7) for moving the sleeve (5) to open, choke or close the opening (4), wherein the sleeve control comprises a first part having at least one member (9) engaging the profile, a second part having a fixation unit (11) fixating the sleeve control in the casing, an actuator (12) for moving the first part in relation to the second part, a power supply (14), such as a battery, supplying power to the actuator (12), and a first communication module (15) for receiving control signals from surface.

Abstract: A geothermal energy extraction subterranean system for extracting heat from a subterranean formation has an injection well in a first borehole and a first production well extracting the heated working fluid through a first production opening. The first well tubular metal structure has first and second annular barriers to isolate a production zone, each annular barrier including a tubular metal part having a first expansion opening and an outer face, an expandable metal sleeve surrounding the tubular metal part and having an inner face facing the tubular metal part and an outer face facing the wall, each end of the expandable metal sleeve being connected with the tubular metal part. The first production zone is arranged between the first and second well tubular metal structures so that the heated working fluid is extracted in the second well tubular metal structure through the first production opening.