A wellbore tool system for use within a wellbore includes a stage packer shoe, having a lower body extending from a first end to a second end; an upper body attached to the lower body at the second end; and circulation ports extending through a thickness of the upper body; a metal cup having a predetermined diameter as determined by a diameter of the wellbore; the metal cup secured around a periphery of the lower body of the stage packer shoe such that the metal cup extends away from the periphery; the metal cup is to engage with the wellbore enough to have differential pressure holding capability between the stage packer shoe and the wellbore; and the differential pressure of the metal cup is dependent on a strength of the cup and the wellbore with which the metal cup is engaged.

Provided is a junction. In one aspect, the junction includes a first member, the first member formed of a first material, and a second member overlapping with the first member, the second member formed of a second material, the first and second members defining an overlapping space. In accordance with this aspect, the junction additionally includes an expanded metal joint located in at least a portion of the overlapping space, the expanded metal joint comprising a metal that has expanded in response to hydrolysis.

Provided is an interval control valve. The interval control valve, in one aspect, includes a tubular housing, the tubular housing having one or more openings extending there through, and a sliding sleeve positioned within the tubular, the sliding sleeve configured to move between a closed position closing a fluid path between the one or more opening and an interior of the tubular housing, and an open position opening the fluid path between the one or more openings and the interior of the tubular housing. The interval control valve according to this aspect additionally includes a tubular overlapping with the sliding sleeve, the sliding sleeve and the tubular defining an overlapping space, and an expanded metal joint located in at least a portion of the overlapping space, the expanded metal joint comprising a metal that has expanded in response to hydrolysis.

Provided is a multilateral junction. The multilateral junction, in one aspect, includes a y-block. The multilateral junction additionally includes a mainbore leg coupled to the y-block, the mainbore leg defining a second overlapping space, and a lateral bore leg coupled to the y-block, the lateral bore leg defining a third overlapping space. The multilateral junction, in this aspect, additionally includes an expanded metal joint located in at least a portion of the second overlapping space or the third overlapping space, the expanded metal joint comprising a metal that has expanded in response to hydrolysis.

The disclosure relates to a hard-sealing soluble bridge plug, comprising a body made of soluble metal. The body comprises a wedge, a slip and a guide shoe which are connected from top to bottom in turn; at least one metal sealing ring is sleeved at the junction of the outer circumference of the wedge and the slip, and the metal sealing ring is made of soluble metal. The hard-sealing soluble bridge plug provided by the disclosure is applied to the field of fracturing and stimulation operation of an oil and gas well so that the hard-sealing soluble bridge plug is more convenient to store, more stable to seal and more firm to anchor, the setting success rate of the hard-sealing soluble bridge plug is effectively improved to better adapt to down hole environments. Furthermore, due to simple and compact structure, the hard-sealing soluble bridge plug is easy to machine and manufacture, and is effectively reduced in the cost of the soluble bridge plug.

Methods and apparatus for positioning a non-expandable liner hanger in a wellbore. A liner is coupled to the liner hanger, wherein the liner hanger comprises: a conduit body; and a reactive metal sealing element disposed on the conduit body, wherein the reactive metal sealing element comprises a reactive metal having a first volume. An example method includes contacting the reactive metal with a fluid that reacts with the reactive metal to produce a reaction product having a second volume greater than the first volume; and contacting a surface adjacent to the reactive metal sealing element with the reaction product to form a seal against the surface and to anchor the liner hanger from the surface, wherein anchoring the liner hanger to the surface suspends the liner in the wellbore.

A well (10) in a geological structure (11), the well (10) comprising: a first casing string (12a) and a second casing string (12b) inside the first casing string (12a) and defining a first inter-casing annulus (14a) therebetween. A wirelessly controllable valve (16a), in the second casing string (12b) provides fluid communication between the first inter-casing annulus (14a) and a second casing bore (14b). The first or second casing string are less than 250 meters longer in length than the second or first casing string respectively and may be the same length. The distal ends of the first and second casing strings may be in a substantially impermeable formation (11). A number of benefits can be realised from such an arrangement. For example, in the event of a “blow-out”, kill fluid may be introduced into the well bore without the need to drill a relief well.

A repairable seal assembly for deployment at a wellbore includes an elongate body, a first seal carried by the elongate body and configured to seal against an adjacent surface, and a transitional component carried by the elongate body. The transitional component is adjustable from a first configuration in which the transitional component defines a gap between the transitional component and the adjacent surface to a second configuration in which the transitional component contacts the adjacent surface to form a second seal at the adjacent surface.

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, the well having a top comprising a body part having an axial extension, a first end facing downhole and a second end facing uphole towards the top of the well, an expandable tubular packer element surrounding the body part, and a first end and a second end of the expandable tubular packer element are fixedly connected with the body part, providing an expandable space therebetween, the expandable space being fillable with liquid during expansion, and a metal sleeve surrounding the expandable tubular packer element, wherein the downhole packer assembly further comprises a restriction unit comprising an axially movable part, the axially movable part having a first part end facing the first end of the expandable tubular packer element and a second part end facing away from the expandable tubular packer element, the axially movable part having a first axial position in which the axially movable part at least partly overlaps the expandable tubular packer element and a second axial position in which the axially movable part has been axially displaced in relation to the body part away from the expandable tubular packer element. The invention also relates to a downhole system comprising the downhole packer assembly and a driving unit, such as a downhole tractor, for propelling the downhole packer assembly in the well tubular metal structure.

A wellbore is plugged using a bismuth alloy. The wellbore is arranged so that a liquid bismuth alloy sets with an excess pressure of the plug relative to the borehole fluid pressure along a desired seal height distance.