摘要:
A drilling vessel with a drilling deck includes a drilling vessel floor structure defining the drilling deck and a tubular support assembly that is recessed in the drilling floor structure. The assembly includes a support frame and at least two support tables, wherein the tables have a top surface that forms part of the drilling deck. The tables are each guided by the support frame to allow displacement along a line between an active position for supporting a tubular and a retracted position for passing an object. The tables and the adapters segments supported thereby are coupled, for example via a clamp or a shape-coupling, such that when the tables move from their active position into their retracted position each segment moves with the respective table it is coupled with and the bushing is opened up for passing through an object through the opening between the at least two support tables and the adapter segments they support.
摘要:
Marine pipelaying method and system for installing an offshore pipeline (1) that includes one or more accessories (10). The method includes the steps of providing a vessel (2), launching the pipeline (1) in a firing line from the vessel (2) in the direction of the seabed, engaging the pipeline (1) with a clamping device (5b) that is connected to the vessel (2) and adapted to support the weight of the previously launched pipeline (1), and moving the accessory (10) into the firing line to a position above the clamping device (5b). Then the accessory (10) is connected to the pipeline (1) above the clamping (5b) device while the pipeline (1) is held by the clamping device (5b) Follow that the accessory (10) and the launched pipeline (1) connected thereto and releasably secured to a controlled load hoisting device (5) and the weight of the accessory (10) and the launched pipeline (1) connected thereto are transferred from the clamping device (5b) to the controlled load hoisting device (5) while the accessory (10) and the launched pipeline (1) connected thereto remain in the firing line. Finally the clamping device (5b) is disengaged from the pipeline (1) and moved away from firing line. Then the accessory (10) and the launched pipeline (1) connected thereto are lowered along the firing line by the controlled load hoisting device (5).
摘要:
A monohull offshore drilling vessel comprising: a hull having a moonpool; —a multiple firing line hoist system mounted on the hull at said moonpool, the multiple firing line hoist system comprising: —a mast having a top side and a base connected to the hull of the drilling vessel, wherein the mast has a hollow construction with a first side and an opposed second side, —a first hoisting device supported by the mast and having load attachment means displaceable along a first firing line, which extends on the outside of and adjacent to the first side of the mast; —a second hoisting device supported by the mast and having load attachment means displaceable along a second firing line, which on the outside of and adjacent to the second side of the mast; wherein the first and second hoisting devices each include one or more cables and one or more associated winches, the winches preferably disposed in the hollow construction of the mast, to manipulate the position of each of the load attachment devices relative to the mast.
摘要:
A method and vessel for installing an expandable tubular in a subsea wellbore, wherein said expandable tubular is assembled from expandable tubular segments, said expandable tubular being adapted to be expanded diametrically when positioned in said wellbore by means of expansion tooling, wherein a multitude of expandable tubular segments are provided, and wherein use is made of a surface vessel, said vessel comprising: at least one assembly station adapted for the assembly of at least one intermediate tubular assembly by interconnection of multiple expandable tubular segments, an intermediate tubular assembly suspension storage device adapted for storage of one or more intermediate tubular assemblies, said intermediate tubular assemblies being suspended from the vessel into the water by said storage device, a guide and handling system for intermediate tubular assemblies, said guide and handling system having an entry and an exit, said entry being spaced from said exit, the entry being arranged and adapted to receive a suspended intermediate tubular assembly from the storage device, the system being adapted for the upward feeding of said intermediate tubular assembly from the entry towards a top of the system, and then downwards to the exit, said system further being adapted for launching the intermediate tubular assembly downward from said exit into the water towards and into the wellbore, a connecting station adapted for connecting an intermediate tubular assembly to another intermediate tubular assembly.
摘要:
Marine pipelaying method and system for installing an offshore pipeline (1) that includes one or more accessories (10). The method includes the steps of providing a vessel (2), launching the pipeline (1) in a firing line from the vessel (2) in the direction of the seabed, engaging the pipeline (1) with a clamping device (5b) that is connected to the vessel (2) and adapted to support the weight of the previously launched pipeline (1), and moving the accessory (10) into the firing line to a position above the clamping device (5b). Then the accessory (10) is connected to the pipeline (1) above the clamping (5b) device while the pipeline (1) is held by the clamping device (5b) Follow that the accessory (10) and the launched pipeline (1) connected thereto and releasably secured to a controlled load hoisting device (5) and the weight of the accessory (10) and the launched pipeline (1) connected thereto are transferred from the clamping device (5b) to the controlled load hoisting device (5) while the accessory (10) and the launched pipeline (1) connected thereto remain in the firing line. Finally the clamping device (5b) is disengaged from the pipeline (1) and moved away from firing line. Then the accessory (10) and the launched pipeline (1) connected thereto are lowered along the firing line by the controlled load hoisting device (5).
摘要:
The embodied mobile cranes have a travelling base structure that allows for travel of the crane over a surface. The cranes have a revolving superstructure mounted on the base structure and a boom and a backmast. The boom and backmast are each hinged about an associated pivot axis to horizontal the superstructure. The crane has a main load hoisting manner associated with the boom for hoisting a load. A superstructure ballast is supported on the superstructure. The cranes have a superlift ballast and associated connection manners to connect the superlift ballast to the backmast while the superlift ballast is resting on the surface and/or suspended from the backmast above the surface. The travelling base structure is provided with superlift ballast support to support the superlift ballast on the base structure so that the superlift ballast is movable along with the mobile crane while being supported by the base structure.
摘要:
A multi purpose hoisting device for use on a floating vessel having a deck, including: a load bearing structure to be mounted on the vessel; a main hoisting mechanism for raising/lowering an object above the deck and including: at least one main hoisting winch; an upper cable pulley block supported by the load bearing structure; a travelling cable pulley block; a main hoisting cable associated with the at least one main hoisting winch and passed over pulleys of the upper cable pulley block and of the travelling pulley block in a multiple fall configuration, such that the travelling cable pulley block is moveable relative to the load bearing structure by using the at least one main hoisting winch; a main hoist heave compensation mechanism associated with the main hoisting cable for damping the effect of sea-state induced motion of the vessel onto an object supported by the main hoisting cable.
摘要:
A monohull offshore drilling vessel includes a hull with a moonpool and a multiple firing line hoist system mounted on the hull. The multiple firing line hoist system includes a mast having a top side and a base connected to the hull, wherein the mast has a hollow construction with a first side and an opposed second side. A first hoisting device is supported by the mast and has load attachment device displaceable along a first firing line, which extends on the outside of and adjacent to the first side of the mast. A second hoisting device is supported by the mast and has a load attachment device displaceable along a second firing line. The first and second hoisting devices each include one or more cables and one or more associated winches to manipulate the position of each of the load attachment devices relative to the mast.
摘要:
The present invention relates to a marine pipeline installation system for laying an offshore pipeline and/or installing a subsea riser, said system being adapted to carry out the reel lay method and the J-lay method. The system comprises a vessel with a moonpool, a pipeline launch tower arranged on the vessel, a pipeline guide at an elevated position on said tower for guiding said pipeline to a pipeline launch trajectory along said tower, and one or more tensioners. The support assembly of at least one tensioner frame is adapted to allow for displacement of the tensioner frame between an active position, wherein the pipeline launch trajectory extends through the tensioner frame between the tracks, so that the tracks can engage on a pipeline, and a retracted and non-operable position. The system further comprises a J-Lay installation.
摘要:
An offshore vessel suitable for laying a pipeline on the seabed, having a pipeline-laying installation of the S-lay type. The offshore vessel has one or more connecting stations disposed on a working deck. The connecting stations are for connecting pipeline sections in a substantially horizontal orientation. A stinger engages on a first side of a hull secured to offshore vessel at an engagement point and protrudes outside the hull, and forms a downwardly directed support for pipeline moving towards the seabed. A hoisting crane is disposed on the first side of the hull, comprising a substantially hollow vertical column comprising a top, a foot, and a body disposed between the foot and the body.