Abstract: A heating a pipe section on board a pipe-laying vessel includes at least one coil constructed to be arranged in a position surrounding the pipe section, the at least one coil being constructed to guide a strong electric current from at least one current source which—in use—is coupled to the at least one coil, where the at least one coil has a coil length which corresponds substantially to the length of the pipe section which is to be heated.

Abstract: A method for removing a hydrocarbon production platform at sea, the production platform being connected to a hydrocarbon well, and including a support structure and an upper part being supported by the support structure, where the method includes the steps of; temporarily closing the well, removing at least part of the upper part from the support structure, positioning a well abandonment module on the support structure, which well abandonment module is constructed and arranged to perform well abandonment operations, performing abandonment operations from the well abandonment module to abandon the well, removing the well abandonment module from the support structure after the well abandonment operations are completed.

Abstract: The invention relates to a pipeline laying vessel (1) for laying a pipeline (2) at a seabed (3) and comprising a tower (4) comprising a firing line (5) along which in use the pipeline is laid and at least one work station (6) for connecting a pipe section (7) to a suspended pipeline and a method of laying pipeline at a sea bed with such a pipe laying vessel.

Abstract: A hoisting assembly for lifting or lowering a heavy object includes an upper fixed block, an upper movable block being suspended from the upper fixed block by at least one first rope which is reeved into one or more first rope lengths between the upper fixed block and the upper movable block, a lower movable block being connected to the upper movable block by at least one second rope which is reeved into one or more second rope lengths between the upper fixed block and the upper movable block. The first and second ropes are reeved in such a way that in use the upper movable block can be positioned at a distance greater than zero from the upper fixed block and at a distance greater than zero from the lower movable block by controlling the lengths of the first and second ropes.

Abstract: The invention relates to a pipeline assembly and a method of installing a pipeline assembly, wherein the pipeline extends at least in part on a seabed and curves upwardly from the seabed along a curved section thereof, the pipeline extending toward a delivery end provided at the water surface, wherein a connecting device connects the pipeline at a coupling point to an anchoring device at the seabed for preventing the coupling point from moving upward. The invention further relates to a pipeline device comprising at least two pipeline assemblies which are interconnected at a substantial distance from the seabed.

Abstract: The invention relates to a pipeline assembly and a method of installing a pipeline assembly, wherein the pipeline extends at least in part on a seabed and curves upwardly from the seabed along a curved section thereof, the pipeline extending toward a delivery end provided at the water surface, wherein a connecting device connects the pipeline at a coupling point to an anchoring device at the seabed for preventing the coupling point from moving upward. The invention further relates to a pipeline device comprising at least two pipeline assemblies which are interconnected at a substantial distance from the seabed.

Abstract: A pipeline laying vessel includes a J-lay system which defines a firing line. The J-lay system includes at least one lowering device for lowering a pipe section or pipeline in the firing line from an upper position to a lower position. The vessel further includes a first pipe-moving device and a second pipe-moving device, where the first pipe-moving device is configured for moving a pipe section from a first remote position remote from the firing line to a firing line position in the firing line, and the second pipe-moving device is configured for moving a pipe section from a second remote position remote from the firing line to the firing line position in the firing line. A method for laying a pipeline uses the above mentioned pipeline laying vessel.

Abstract: A pipeline laying vessel (1) for laying a pipeline (2) on a seabed, said vessel (1) comprising a J-lay system (4) defining a firing line (5) along which the pipeline (2) is laid, the J-lay system (4) comprising an alignment device (6) for aligning a pipe section (7) with the pipeline (2) suspended from the J-lay system (4) with a sufficient level of accuracy to allow the pipe section (7) to be welded to the pipeline (2), the alignment device (6) being constructed to maintain the alignment during at least a part of the welding operation of the pipe section (7) to the pipeline (2), wherein the alignment device (6) is movable between a first position (10) in the firing line (5) and a second position (11) outside the firing line (5), and the alignment device (6) is constructed to engage a pipe section (7) in the second position (11) and to be moved into the first position (10) together with the engaged pipe section (7).

Abstract: A J-lay system constructed to be positioned on board a pipeline-laying vessel, comprising a fixed pipeline support (12) and a movable pipeline support (12) configured for supporting a pipeline (10) which is suspended form the pipeline-laying vessel,—the movable pipeline support (12) comprising:—at least a first movable support member (20A) configured for engaging a first collar (16A) on the pipeline (10),—at least a second movable support member (20B) configured for engaging a second collar (16B) on the pipeline (10),—the fixed pipeline support (12) comprising:—at least a first fixed support member (20A) configured for engaging a third collar on the pipeline (10),—at least a second fixed support member (20B) configured for engaging a fourth collar on the pipeline (10), wherein the first (20A) and second fixed support member (20B) configured for engaging a fourth collar on the pipeline (10).

Abstract: The invention relates to an axial displacement device (3) to be used in conjunction with a rotary winch (2), said winch comprising a drum (7) being rotatable about an axis of rotation (a-a), said axial displacement device to be arranged stationary with respect to said winch and comprising one or more guiding elements (23), said one or more guiding elements being configured to displace a winding of said line in an axial direction parallel to said axis of rotation with at least the diameter of said line, so that a part of said winding being in contact with said drum runs in a plane substantially perpendicular to the axis of rotation.

Abstract: The invention relates to a measurement system constructed and arranged to measure geometrical data from two pipe end bevels of two pipes that need to be joined. The measurement system being provided with a measuring device, wherein the measurement system is constructed and arranged so that the measuring device is moveable in between the two pipe end bevels and the measuring device has a part of a different one of the two pipe end bevels within its measurement angle.

Abstract: The present invention relates to a pipeline guide assembly for a pipeline laying vessel, the pipeline guide assembly comprising:—a plurality of segments (20) pivotably interconnected via hinges (38) in an end-to-end relationship, each segment comprising at least one pipeline support (34) constructed to support a pipeline, wherein the pipeline supports provide a firing line (24) along which a pipeline can be launched,—a curvature mechanism (32) comprising at least one actuator (68, 68a, 68b, 68c, 68d), the curvature mechanism constructed for pivoting each segment relative to the next segment such that in use the segments provide a curved firing line, wherein the pipeline supports limit the curvature of the pipeline as it is launched along said curved firing line. The present invention also relates to a vessel comprising the stinger. The present invention also relates to a method of laying a pipeline utilizing the stinger of the invention.

Abstract: A vessel (1) for laying a pipeline (2), comprising a tower (3) which comprises a firing line (4) and is connected to the vessel by a hinge assembly (5) comprising a tower pivot axis (6), wherein: the tower is pivotable relative to the vessel about the tower pivot axis, during pipelaying the tower comprises an upper end and a lower end and the pipeline moves relative to the vessel along the firing line in a laying direction from the upper end towards the lower end, and the tower pivot axis is located at a distance D1 from said upper end as viewed in the laying direction, a system for abandoning and recovering the pipeline, wherein: the system comprises at least one line for lowering and raising a member configured to be connected to the pipeline, and the at least one line is supported by the hinge assembly and/or by the tower at a distance of at least ? D1 from said upper end as viewed in the laying direction.

Abstract: The present invention relates to a guiding device (40) configured to guide equipment units for joining pipe sections which are arranged in a substantially upright position. The guiding device comprises a stationary body (41), one or more movable carriers being movably supported on said stationary body and configured to revolve one or more equipment units about a pipe section, a pipeline engagement device (63) configured to engage said guiding device with said pipe section and to support said stationary body, and one or more adjustable supports (44), said one or more adjustable supports being configured to make adjustment possible of a working plane of one or more equipment units (47, 48, 49) mounted on or to be mounted on said one or more carriers with respect to a pipe section on which the guiding device is mounted.

Abstract: A vessel (1) for laying a pipeline, the vessel comprising a hull structure (3) comprising one or more floaters (4), a tower (5) defining a firing line (6) when positioned in a pipelaying position, the tower (5) being pivotable relative to the hull structure (3) about a tower pivot axis (7), and an A & R means (8) for abandoning and/or recovering the pipeline, wherein the tower (5) is pivotable about said tower pivot axis (7) substantially independent from the A & R means (8) and the A & R means (8) is configured to operate while the tower (5) is pivoted about said tower pivot axis (7).

Abstract: The present invention relates to a semi-submersible vessel comprising at least one lower hull section (22) which defines a first water displacing volume; a support structure (24) connected to the at least one lower hull section (22) and extending upward from the at least one lower hull section, wherein the support structure (24) has a waterplane area which is substantially smaller than the waterplane area of the at least one lower hull section; a deck structure (26) connected to the support structure (24), wherein the deck structure (26) is provided at a distance above the at least one lower hull section (22); a ballast system for controllably varying the draft of the vessel such that at a first draft (30) the at least one lower hull section (22) may be provided at least in part above the water-line and at a second draft (28) the support structure may be provided at least partly below the water-line; wherein the assembly of said at least one lower hull section, said support structure and said deck structure c

Abstract: The present invention relates to a guiding device (40) configured to guide equipment units for joining pipe sections which are arranged in a substantially upright position. The guiding device comprises a stationary body (41), one or more movable carriers being movably supported on said stationary body and configured to revolve one or more equipment units about a pipe section, a pipeline engagement device (63) configured to engage said guiding device with said pipe section and to support said stationary body, and one or more adjustable supports (44), said one or more adjustable supports being configured to make adjustment possible of a working plane of one or more equipment units (47, 48, 49) mounted on or to be mounted on said one or more carriers with respect to a pipe section on which the guiding device is mounted.

Abstract: A method and apparatus for joining pipe sections (102, 104) together to form an underwater pipeline. The pipe sections (102, 104) are in an abutting position and have a generally vertical orientation. The apparatus comprises at least two welding equipment carriers (148, 152) and at least two welding heads (110, 112). Each welding head is connected to an equipment carrier (148, 152) by means of at least one umbilical (130, 132). The apparatus further comprises a welding head guide assembly (113) which is adapted to be fixed to one of said upper of lower pipe sections. The welding head guide assembly (113) guides the welding heads about the pipe sections (102, 104). The apparatus further comprises a guiding device (133) which guides the welding equipment carriers (148, 152) around said welding area (115). The welding equipment carriers (148, 152) are movable independently from one another.

Abstract: The present invention relates to a method for laying a pipeline using a vessel (1) comprising a crane (2) comprising the following steps lifting a new pipe section (8) using the crane, placing a new pipe section on an existing pipeline (9), lining up the new pipe section with respect to the existing pipeline, welding the new section to the existing section, lowering the joined new section and the existing pipe, supporting the joined new section so that the crane is free to lift another new section. The invention further relates to a pipe-laying vessel for carrying out such method.

Abstract: The invention relates to a method for positioning an end (19) of a first pipe section (14) relative to an end (20) of a second pipe section (18), the method comprising: (a) prepositioning the end (19) of the first pipe section (14) near the end (20) of the second pipe section (18), defining a connection area (51) comprising the respective ends (19, 20) of the first and second pipe sections (14, 18); (b) performing a measuring process comprising a plurality of measuring steps, each measuring step comprising: (b1) moving a sensing device (86) to a location (89a, 89b, 89c) near the connection area (51); (b2) automatically measuring the location (89a, 89b, 89c) of the sensing device (86) relative to a reference location (87); (b3) automatically measuring point positions (98a, 98b, 98c, 98d) of points on the ends (19, 20) of the first and second pipe sections (14, 18) relative to the sensing device location (89a, 89b, 89c); (c) determining a target position of the end (19) of the first pipe section (14) relative t