Systems and methods for securing a remotely operated vehicle (ROV) to a subsea structure during cleaning, maintenance, or inspection of the structure surface are provided. In one or more embodiments, an attachment mechanism includes a pair of grasping hooks that are raised and lowered when driven by a motorized drive. In one or more embodiments, an attachment mechanism includes a rigid holder having a mechanical stop and connected to a swing arm, the swing arm configured to rotate inward, but not outward beyond the mechanical stop. In one or more embodiments, an attachment mechanism includes a plurality of linked segments in series, each connected at a plurality of pivot points. A pair of wires passes through the plurality of linked segments and connects to a pair of pulleys that extend or retract the wires, thereby rotating the plurality of linked segments.

A method of assembling a pipeline at a seabed location comprises landing a connection tool (10) on the seabed over a free end portion of a first pipeline section (12) already placed on the seabed. The connection tool is locked to the free end portion of the first pipeline section, a lower end of a second pipeline section (26) is connected to the connection tool via an initiation line (68). While applying tension to the initiation line against reaction force of the connection tool, at least a lower end portion of the second pipeline section is landed on the seabed with the lower end facing a free end of the first pipeline section. The lower end of the second pipeline section is then pulled into mechanical engagement with the free end of the first pipeline section.

A jumper manifold for use in a fracing system including a first outlet interface for coupling to a first outlet line, a second outlet interface for coupling to a second outlet line, and an inlet interface for coupling to an inlet line carrying a slurry under pressure. A jumper, in a first configuration, couples the inlet interface with the first outlet interface for transporting slurry from the inlet line to the first outlet line while isolating the second outlet line. The jumper, in a second configuration, couples the inlet interface with the second outlet interface for transporting slurry from the inlet line to the second outlet line while isolating the first outlet line.

An inspection crawler, and systems and methods for inspecting underwater pipelines are provided. The system includes the inspection crawler having a housing with a first side, an opposing second side, a power source, and a controller. The crawler includes an inspection tool, at least two pairs of latching arms, each latching arm including a rolling element, and at least two pairs of driving wheels. The system also includes at least one communication unit configured to communicate with the inspection crawler and to communicate aerially with one or more remote devices and, and at one sea surface unit. The inspection crawler can further include a connecting structure connecting the front and back portions of the crawler, and configured to elongate and shorten the inspection crawler.

An inspection crawler, and systems and methods for inspecting underwater pipelines are provided. The system includes the inspection crawler having a housing with a first side, an opposing second side, a power source, and a controller. The crawler includes an inspection tool, at least two pairs of latching arms, each latching arm including a rolling element, and at least two pairs of driving wheels. The system also includes at least one communication unit configured to communicate with the inspection crawler and to communicate aerially with one or more remote devices and, and at one sea surface unit. The inspection crawler can further include a connecting structure connecting the front and back portions of the crawler, and configured to elongate and shorten the inspection crawler.

A method of connecting together two unit elements (4, 4′) of a fluid transport pipe, each unit pipe element being made of metal alloy and being covered in an outer insulating coating (6, 6′) made of a thermoplastic material, with the exception of an end portion that does not have an outer insulating coating, the method comprising a step of butt-welding together two unit pipe elements at their end portions having no outer insulating coating, a step of mechanically assembling at least two rigid shells (14, 16) made of a thermoplastic material on the end portions of the unit pipe elements not having an outer insulating coating, and a step of keeping the shells sealed against the outer insulating coating of the two unit pipe elements.

A method of connecting together two unit elements (4, 4′) of a fluid transport pipe, each unit pipe element being made of metal alloy and being covered in an outer insulating coating (6, 6′) made of a thermoplastic material, with the exception of an end portion that does not have an outer insulating coating, the method comprising a step of butt-welding together two unit pipe elements at their end portions having no outer insulating coating, a step of mechanically assembling at least two rigid shells (14, 16) made of a thermoplastic material on the end portions of the unit pipe elements not having an outer insulating coating, and a step of keeping the shells sealed against the outer insulating coating of the two unit pipe elements.

The invention relates to a flexible piping and an improved process for capturing accidental pressurized fluid leaks resulting from a pipeline wherethrough these fluids are transported, in the situation of breaking or cracking, and redirecting the fluid flow in a controlled manner to a desired direction.

The device according to the invention is made up of a number n≥1 of heat shrinkable strips (A), each provided on both sides with two zippers (B) and (C) having fluid tight toothed rails (7) and (8) with antagonistic directions of operation, in order to allow the interconnecting and closing of the zippers independently from both ends of the piping towards the central part thereof. The strips (A) with antagonistic zippers are each provided, on one of the longitudinal sides with 2 (two) robotic closing sliders (9) and (10) remotely electrically commanded, and at both ends they have provided magnetic inserts (16) and (17) and inserts of shape memory materials (18) and (19) to generate a curvature in the transverse plane of the strips. The strips (A) are provided at the outer side with a layer (14) having properties of thermal protection, and at the inner side with a thermally activable layer (15) of solid adhesive.

The process according to the invention, allows the fixing by heat shrinking and vulcanization of both ends of the flexible piping onto the body of the pipelines on which it is mounted, and comprises in a first step, the mounting on the body of a suction pipe (20), of the front ends (c) of some strips (A) by wrapping around and interconnecting the same, concomitantly acting the curvature in the transverse plane of the element (18) made up of shape memory material, and closing the zippers (B) by moving the robotic closing sliders (9). Subsequently, there are activated the electrical heating resistances (3) for heat shrinking and complete molding of the piping, and the thermal activation of the adhesive layer (15) for the vulcanization on the body of the pipeline (20) on which it was mounted. In a subsequent step, on the damaged end (d) of the pipeline (1) there are mounted the rear ends (e) of the strips (A) by wrapping around and interconnecting the same, concomitantly with acting the curvature in the transverse plane of the elements (19) made up of shape memory material, and closing the zippers (C) by moving the robotic closing sliders (10). Subsequently, there are activated the electrical heating resistances (3) for the heat shrinking and complete moldng of the piping, and the thermal activation of t

The invention relates to a flexible piping and an improved process for capturing accidental pressurized fluid leaks resulting from a pipeline wherethrough these fluids are transported, in the situation of breaking or cracking, and redirecting the fluid flow in a controlled manner to a desired direction.

The device according to the invention is made up of a number n≥1 of heat shrinkable strips (A), each provided on both sides with two zippers (B) and (C) having fluid tight toothed rails (7) and (8) with antagonistic directions of operation, in order to allow the interconnecting and closing of the zippers independently from both ends of the piping towards the central part thereof. The strips (A) with antagonistic zippers are each provided, on one of the longitudinal sides with 2 (two) robotic closing sliders (9) and (10) remotely electrically commanded, and at both ends they have provided magnetic inserts (16) and (17) and inserts of shape memory materials (18) and (19) to generate a curvature in the transverse plane of the strips. The strips (A) are provided at the outer side with a layer (14) having properties of thermal protection, and at the inner side with a thermally activable layer (15) of solid adhesive.

The process according to the invention, allows the fixing by heat shrinking and vulcanization of both ends of the flexible piping onto the body of the pipelines on which it is mounted, and comprises in a first step, the mounting on the body of a suction pipe (20), of the front ends (c) of some strips (A) by wrapping around and interconnecting the same, concomitantly acting the curvature in the transverse plane of the element (18) made up of shape memory material, and closing the zippers (B) by moving the robotic closing sliders (9). Subsequently, there are activated the electrical heating resistances (3) for heat shrinking and complete molding of the piping, and the thermal activation of the adhesive layer (15) for the vulcanization on the body of the pipeline (20) on which it was mounted. In a subsequent step, on the damaged end (d) of the pipeline (1) there are mounted the rear ends (e) of the strips (A) by wrapping around and interconnecting the same, concomitantly with acting the curvature in the transverse plane of the elements (19) made up of shape memory material, and closing the zippers (C) by moving the robotic closing sliders (10). Subsequently, there are activated the electrical heating resistances (3) for the heat shrinking and complete moldng of the piping, and the thermal activation of t

A method of installing a header pipe joint 1 at a subsea structure 5 is provided, comprising providing a header pipe joint 1 having at least one valve 2 installed therein and connecting the header pipe joint 1 inline of a spool 15 or pipeline 18 prior to lowering the header pipe joint 1 to the subsea structure 5. The header pipe joint 1 is then lowered to the subsea structure 5, and the valve 2 is connected to the subsea structure (e.g. a subsea production system of the subsea structure such as a xmas tree) with a connection bridge e.g. a choke bridge 14. This provides a fluidic connection between the subsea structure and the header pipe joint. The subsea structure 5 comprises a foundation, e.g. suction anchors 11, which provide support for both a wellhead and the header pipe joint. A subsea assembly comprising a subsea structure 5, header pipe joint 1 and connection bridge 14 is also provided.