A hydrocarbon production assembly within a multilateral wellbore, the multilateral wellbore having a main bore portion which extends downwardly from surface and a lateral leg which extends radially away from the main bore portion.

A completion system and method for intelligent control of multilateral wells. A completion deflector defines a hollow interior that is fluidly coupled with a uphole tubing and downhole main completion strings. Hydraulic, electric, and/or fiber-optic communication line segments extend between the uphole end and downhole end of the completion deflector for providing power, control or communications between the surface and production zones associated with the main wellbore. The communication line segments are located outside the completion deflector interior and may be located within longitudinal grooves formed along the exterior wall surface of the completion deflector. A self-guided, wet-matable connector is provided at the uphole end, which connects the both interior flow path and communication lines, and which may allow connection at any relative radial orientation. The uphole end of the completion deflector has an inclined upper surface for deflecting various tools and strings into a lateral wellbore.

The invention relates to a wellbore-lining tubing comprising at least one window pre-formed in the wall of the tubing and a device for selectively generating a fluid pressure pulse, and to a method of forming a lateral wellbore employing such a tubing. In an embodiment, a wellbore-lining tubing (130m) is disclosed which comprises: a tubing wall (32m), an internal fluid flow passage (30m), and at least one window (154m) pre-formed in the wall of the tubing; a device (34m) for selectively generating a fluid pressure pulse, the device located at least partly in a space (36m) provided in the wall of the tubing; and a coupling (190) for receiving a deflection tool (192) so that the deflection tool can be secured to the tubing and employed to divert a downhole component (202) through the window in the tubing wall.

Provided is a self-deflecting multilateral junction, a method, and a well system. The self-deflecting multilateral junction, in one aspect, includes a deflection device having an uphole end and a downhole end, the deflection device including a main tubular, a first flow path off the main tubular and operable to couple to a wellbore, a second flow path off the main tubular and operable to couple to a lateral wellbore, the second flow path having a lateral seal bore, and a deflecting ramp. The self-deflecting multilateral junction, according to this aspect, further includes a lateral stinger positioned within the main tubular and releasably coupled to the deflection device, the lateral stinger including a nose end configured to extend into the second flow path, a valve member, and a lateral seal for engaging the lateral seal bore.

A lateral wellbore access system is used for moving an isolation sleeve relative to a window of a completion sleeve to adjust access through the window. The system includes an actuator having an isolation sleeve coupling mechanism and a driving mechanism. The isolation sleeve coupling mechanism is configured to engage with an isolation sleeve. The driving mechanism is configured to longitudinally reciprocate the isolation sleeve coupling mechanism within a bore of a completion sleeve to longitudinally move an isolation sleeve coupled to the isolation sleeve coupling mechanism within the bore relative to a window of the completion sleeve. Movement of the isolation sleeve adjusts a position of the isolation sleeve relative to the completion sleeve window for permitting or blocking access through the window into the bore.

A lateral wellbore access system is used for moving an isolation sleeve relative to a window of a completion sleeve to adjust access through the window. The system includes an actuator having an isolation sleeve engagement mechanism and a driving mechanism. The isolation sleeve engagement mechanism is configured to engage with an isolation sleeve. The driving mechanism is configured to longitudinally reciprocate the isolation sleeve relative to the isolation sleeve engagement mechanism within a bore of a completion sleeve to longitudinally move an isolation sleeve within the bore relative to a window of the completion sleeve. Movement of the isolation sleeve adjusts a position of the isolation sleeve relative to the completion sleeve window for permitting or blocking access through the window into the bore.

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.

A system and method to controlling fluid flow to/from multiple intervals in a lateral wellbore. The system and method can include a unitary multibranch inflow control (MIC) junction assembly (a primary passageway through a primary leg and a lateral passageway through a lateral leg) installed at an intersection of main and lateral wellbores. An upper energy transfer mechanism (ETM) can be mounted along the primary passageway, and control lines 100 can provide communication between the upper ETM 214 and lower completion assembly equipment. A lower ETM can be mounted along the lateral passageway, with the upper ETM in communication with the lower ETM via the control lines. A tubing string can be extended through the primary passageway to access lower completion assembly equipment. The upper ETM can communicate with a tubing string ETM to receive/transmit control, data, and/or power signals from/to lower completion equipment in the lateral wellbores.

A deflector assembly for an object in a well. The deflector assembly may include a tubular housing and a core plug. The tubular housing may include a window through a wall of the tubular housing, a deflector below the window. The deflector may include a cavity extending through an axial length of the deflector and a deflector angled surface that is shaped to direct the object toward the window. The core plug may be removably coupleable within the cavity and include a receptacle and a second angled surface that is shaped to direct the object toward the window. The second angled surface is aligned with the deflector angled surface. The core plug may be coupleable with the deflector so as to rotate with the deflector.

Systems, methods, and apparatus are disclosed allowing relative movement between downhole tools while remaining in electrical communication. In one example, a first tool comprising a first connector body is configured for connecting to a second connector body of a second tool. A sliding connector housing has an electrical strip axially arranged along the connector housing, wherein the first or second connector body is moveably secured to the connector housing in sliding electrical contact with the electrical strip. The first and second connector bodies are releasably connectable to each other, thereby allowing relative movement between the first and second tools via the connector housing while maintaining electrical and fluid communication between the first and second tools