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: The present invention relates to a fixation device for fixation of a position of an inner pipe of a double-walled pipe with respect to a pipe laying structure and/or an outer pipe of said double-walled pipe, said fixation device comprising: an inner pipe gripping device (23) configured to grip said inner pipe, and a connection device (24,25,2S) configured to connect said inner pipe gripping device with said pipe laying structure and/or said outer pipe, said connection device having a flexible state in which, during use, the inner pipe gripping device is movable with respect to said pipe laying structure and/or said outer pipe, and a fixation state in which, during use, the inner pipe gripping device is fixated with respect to the pipe-laying structure and/or said outer pipe.

Abstract: A method of providing an insulated pipe-in-pipe assembly includes providing an inner pipe; providing a thermal insulation layer of a highly porous solid formed from a gel, the highly porous solid having pores smaller than 100 nanometre, the thermal insulation layer being provided around the inner pipe for thermal insulation of the inner pipe; providing a protective layer on the outer surface of the thermal insulation layer for protecting the thermal insulation layer, and providing a thick walled outer pipe around the protective layer. A Pipe-in-pipe assembly and a pipe-in-pipe section made by the method are also provided.

Abstract: The present invention relates to a tubular member configured to be supported by a pipe support device on board a pipelay vessel, the tubular member comprising at least one load bearing surface which is formed along the outer side of the tubular member, the at least one load bearing surface being constructed and arranged in order to allow a substantial axial load to be imparted onto said tubular member by the pipe support device, wherein the at least one load bearing surface tapers outwardly with respect to a main longitudinal axis of said tubular member. The present invention also relates to a tubular member comprising a plurality of load bearing surfaces. The present invention also relates to a method of laying a pipeline, to a pipe support device, to a pipelay vessel, to a method of processing a tubular member, to a method of assembling a pipe assembly and to a pipe assembly.

Abstract: The invention relates to a multi-joint installation configured to join two or more pipe sections. The multi-joint installation is rotatable about an axis of rotation between a substantially horizontal and a substantially vertical position. The multi-joint installation includes two or more holding devices for holding two or more pipe sections, and at least one joining device for joining the two or more pipe sections to each other.

Abstract: The present invention relates tot a method of removing an upper part of a platform which rests on a seabed and which extends above the waterline, the platform comprising legs which extend upwards from the seabed, the method comprising the subsequent steps of: providing a vessel comprising a single hull, the hull defining a contour of the vessel when viewed from above; providing a support structure which is configured to rest on the vessel, the support structure comprising one or more beams, the one or more beams having connection ends that are constructed to extend outside the contour of the hull on opposite sides of the vessel, the connection ends configured to be connected to the legs of the platform; positioning the vessel between the legs of the platform; connecting the connection ends to the legs of the platform; disconnecting the upper part of the platform from the lower part; lifting the upper part of the platform from the lower part by the vessel via the support structure; moving the vessel and the

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 present invention relates to a pipeline-laying vessel (1) comprising: a hull assembly (8) for providing buoyancy to the pipeline-laying vessel (1); a tower assembly (2) extending upwardly from the hull assembly (8) for supporting a part of the pipeline (10) which is to be laid; a pipeline guiding assembly (60) provided at a position below the tower assembly (2) and configured to guide the pipeline (10). The pipeline guiding assembly (60) is coupled to the hull assembly (8) for transferring a force exerted by the pipeline (10) on the pipeline guiding assembly (60) to the hull assembly (8).

Abstract: The present invention relates to a sealing device that is configured to form a seal around a pipe by use of an air flow in order to prevent a fluid from passing the sealing device. The sealing device includes an air inlet for the inflow of compressed air and configured to be connected to a source of compressed air; one or more channels connected to the air inlet, the channels extending along a substantially annular trajectory and configured to—in use—extend substantially around the pipe; a plurality of outlet points or an annular outlet groove connected to the one or more channels, the outlet points being configured to blow the compressed air in the region of the pipe wall, in order to create an air flow about the pipe in order to prevent a fluid from passing the sealing device.

Abstract: The invention relates to a pipeline assembly (1) and a method of installing a pipeline assembly, wherein the pipeline (10) extends at least in part on a seabed (14) and curves upwardly from the seabed along a curved section (15) thereof, the pipeline extending toward a delivery end (36) provided at the water surface (4), wherein a connecting device (27) connects the pipeline at a coupling point (30) to an anchoring device (26) at the seabed for preventing the coupling point from moving upward. The invention further relates to a pipeline device (122) comprising at least two pipeline assemblies which are interconnected at a substantial distance from the seabed.

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

Abstract: With a method and device for producing a channel in the ground, in a first step, an excavating device is positioned at the starting point of a channel to be produced. The excavating device has an excavating head which is provided with one or more liquid jetting devices. Then, a mixture of soil and water is formed by spraying liquid from the liquid jetting devices. This mixture is discharged. The excavating head advances in the excavating direction while the liquid is being sprayed. Thus, the channel is produced. When the end point of the excavation has been reached, at least a part of the excavating device is uncoupled and moved back to the starting point of the channel, so it can be used again.

Abstract: The invention relates to a method and device for constructing a pipeline with an in-line or add-on device from a pipeline laying vessel, the method comprising the steps of: (a) suspending the pipeline from a clamping device on the vessel; (b) connecting an in-line or add-on device to the pipeline above the clamping device; (c) moving at least part of the clamping device away from the pipeline to provide clearance at the pipeline; (d) lowering the pipeline by a pipeline, deployment device until the in-line or add-on device has moved beyond the clamping device.

Abstract: An anchoring method and device, for anchoring a pipeline to a seabed. The pipeline may extend from a well which is located on a seabed to a floating platform. Tension forces which are exerted on the pipeline by the platform are diverted into the seabed by the anchoring device.

Abstract: In a method for providing a pipeline assembly, having an inner pipeline and an outer pipeline, the outer pipeline is formed by welding outer pipe sections together. A thermal shielding is provided to protect the inner pipeline from the heat generated by the welding of the outer pipe sections. The thermal shielding had a low thermal conductivity and is heat resistant. The thermal shielding may have an annular form. The method may be used in laying a deep sea pipeline assembly and used in a J-lay method or S-lay method of laying pipes.

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: An abandonment and recovery head apparatus comprises a head member. A lift member is moveably coupled to the head member. A retaining device is operable to hold the lift member in an accessible position.

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. An upper end (108) of the most recently joined pipe sections (104) is to be welded to a lower end (106) of a new pipe section (102). 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).

Abstract: A method for manufacturing a double walled pipeline comprises directly coupling an inner coupling tube and an outer coupling tube on a bulkhead section to an inner tubular member and an outer tubular member on a pipeline.

Abstract: With a method and device for producing a channel in the ground, in a first step, an excavating device is positioned at the starting point of a channel to be produced. The excavating device has an excavating head which is provided with one or more liquid jetting devices. Then, a mixture of soil and water is formed by spraying liquid from the liquid jetting devices. This mixture is discharged. The excavating head advances in the excavating direction while the liquid is being sprayed. Thus, the channel is produced. When the end point of the excavation has been reached, at least a part of the excavating device is uncoupled and moved back to the starting point of the channel, so it can be used again.