Itrec B.v.

Ronny Lambertus Waltherus Nouwens

Joop Roodenburg

Terence Willem August Vehmeijer

Arnoud Laurens Feijen

Wilco Stavenuiter

Diederick Bernardus Wijning

Arthur Alexander De Mul

Wouter Johannes Slob

Jeroen Adrianus Joseph Donkers

Hubertus Lourens Leendert Tieleman

Rick Van Der Valk

A drill rig includes a drilling tower, a drill floor with a well center, a slip device arranged at the well center, a tubulars connection makeup and breaking device, and a top drive system. The top drive system includes a traveling carriage that is vertically mobile along vertical rails of the drilling tower by means of a vertical motion drive. The system also includes a top drive unit supported by the carriage and including a top drive motor and a rotary torque output member. The system further includes a tripping operation elevator adapted to be engaged with the drill string in order to perform tripping operations. The top drive unit and the tripping operation elevator are each mobile relative to the traveling carriage, and the top drive system is provided with actuators adapted to cause the relative motion of the top drive unit and of the tripping operation elevator so as to provide a drilling mode, a tripping mode and bypassing mode.

Drilling rig with a top drive system operable in a wellbore drilling mode, tripping mode, and bypassing mode

A marine reel lay method pipeline installation system for laying a flexible pipeline on the seabed a pipeline includes a pipeline launch tower adapted to launch the flexible pipeline in a firing line along said tower; a pipeline guide provided at an elevated position; one or more tensioners, wherein the tensioner frame includes two frame segments with track units, the two frame segments being adapted to be conjoined to each other and being pivotably mounted to said pipeline launch tower about a respective vertical tensioner pivot axis, allowing said two frame segments to be pivotable between a closed flexible pipeline laying configuration; and an open configuration; one or more vertical trolley rails supported by said pipeline launch tower and positioned between said vertical tensioner pivot axes of said two frame segments; a trolley movable along said one or more vertical trolley rails in a vertical trolley path which is unobstructed when said two frame segments are in the open configuration; and a hoisting device being adapted to lower and raise said trolley.

Offshore vessel, marine pipeline installation system and method

A vessel is adapted to perform subsea wellbore related operations including module handling and laying flexible pipeline, e.g. wellbore intervention. The vessel includes a hull with a moonpool and a stationary drilling mast adjacent said moonpool. The front side of the drilling mast is provided with vertical trolley rails along which&#x2014;during module handling&#x2014;a module handling trolley is movable. Further one or more tensioners are provided to engage a flexible pipeline, also being supported by the by the drilling mast. The tensioner frame of a tensioner is mounted pivotably about a vertical pivot axis to the drilling mast, such that the tensioner frame is pivotable between the pipeline laying configuration wherein the lower tensioner is provided in the module handling area and an open configuration wherein a vertical trolley path is unobstructed to allow module handling.

A marine pipeline installation system and marine pipeline installation method are disclosed. The marine pipeline installation system includes a pipeline launch tower for launching the pipeline in a firing line along the pipeline launch tower into the sea, and one or more tensioners supported by the pipeline launch tower. The system further includes a pipeline guide supported in a pipeline launch trajectory between a pipeline storage and the firing line above the one or more tensioners, wherein the pipeline guide is provided opposite the firing line relative to the pipeline launch tower. A guide support structure is provided, which is embodied as a single-sided guide support arm arranged on one side of the pipeline guide only.

Marine pipeline installation system and marine pipeline installation method

A marine pipeline installation vessel and a method are provided for laying an offshore rigid pipeline in the sea, the vessel at least being adapted to carry out the rigid reel lay method. The vessel includes at least one vertical storage reel for the storage of a spooled rigid pipeline. A left and right reel support structure are provided to support the weight of the at least one storage reel. The left and right support structures are embodied to form a pivoting structure allowing an angular adjustment of the horizontal reel axis about a vertical axis to alter the angular position of the at least one storage reel.

Marine pipeline installation vessel and method for laying an offshore rigid pipeline in the sea

A tubular installation system includes a J-lay tower structure for lowering and raising a tubular or an accessory along a firing line; a tubulars supply system; an accessory supply system; and a loader system configured for transporting a tubular and an accessory between the horizontal tubular supply position and the firing line, wherein the loader system comprises: a loader device with a base and a boom which is pivotable with respect to the base between a lowered position for gripping a tubular and an accessory in the horizontal accessory supply position, and a raised position for delivering then to the firing line; a line-up tool, wherein the line-up tool is configured to exchange a tubular and an accessory with the loader device and transport a tubular between the loader device and the firing line.

Tubular installation system for J-laying tubulars, marine pipelay system and method for handling a tubular or accessory

A marine pipeline installation system for laying an offshore pipeline and/or installing a subsea riser includes a pipeline launch tower, a pipeline guide provided at an elevated position for guiding said pipeline to the pipeline launch trajectory along said tower, one or more tensioners, an abandonment and recovery (A&R) system including at least one A&R cable and associated A&R winch and a sheave arrangement with one or more sheaves supported by the pipeline launch tower at an upper position thereof. An auxiliary trolley is provided which is adapted to support the weight of the launched pipeline and which is movable along a rail in the pipeline launch trajectory when the one or more tensioner frames are in the retracted non-operable position, from a position above the uppermost tensioner to a position below the lowermost tensioner, the rail being supported by the pipeline launch tower.

Marine pipeline installation system and method

A method for installing an accessory onto a pipeline to be laid on the seabed, includes launching the pipeline from a first position of a tower in which the tower is at an angle &#x3b1; with respect to the vertical; stopping the launch of the pipeline, and hanging off the launched pipeline in a hang off module; positioning an accessory in a tower firing line; attaching the accessory to the launched pipeline in the hang off module and to at least one A&R cable; suspending the accessory and the launched pipeline from an A&R system; disengaging the hang off module from the launched pipeline; pivoting the pipeline launch tower to an accessory launch position in which the tower is at an angle &#x3b3; that differs substantially from angle &#x3b1;, such that a pipeline launch trajectory is created which is large enough to launch the accessory and the launched pipeline with the A&R system.

Marine pipeline installation system and methods

The invention relates to a marine pipeline installation tensioner () for use on a pipeline installation vessel. A tensioner according to the invention comprises a lower track unit (), an upper track unit () and a tensioner frame (). The tensioner frame comprises multiple tensioner frame supports (), a lower support frame () supporting the lower track unit, an upper support frame () supporting the upper track unit, a set of lower support frame actuators () provided between the tensioner frame supports and the lower support frame, and a set of upper support frame actuators () provided between the lower support frame and the upper support frame and adapted to move the upper support frame relative to the lower support frame. According to the invention, the track units are positioned by positioning the tensioner frame sections () of the tensioner frame, and not by positioning the track units () relative to the tensioner frame. This allows for a more compact tensioner design.

Marine pipeline installation tensioner

The present invention relates to a marine pipeline installation system for laying an offshore pipeline and/or installing a subsea riser. The system comprises: a pipeline launch tower (), a pipeline guide () provided at an elevated position for guiding said pipeline to the pipeline launch trajectory along said tower, one or more tensioners (), an abandonment and recovery (A&R) system () comprising at least one A&R cable and associated A&R winch and a sheave arrangement with one or more sheaves supported by the pipeline launch tower at an upper position thereof. Furthermore, an auxiliary trolley () is provided which is adapted to support the weight of the launched pipeline and which is movable along a rail in the pipeline launch trajectory when the one or more tensioner frames are in the retracted non-operable position, from a position above the uppermost tensioner to a position below the lowermost tensioner, the rail being supported by the pipeline launch tower.

The invention relates to a marine load raising and lowering system for use on a vessel, comprising: i. a first winch comprising first driving means for raising or lowering a first cable from the first winch; ii. a second winch comprising second driving means for raising or lowering a second cable from the second winch; iii. operating means connected to the first and second driving means of respectively the first and second winch for synchronising the driving means so as to perform synchronous raising or lowering of the first and second cable; iv. a load connector; wherein the first and second cable are both connected to the load connector with a respective terminal end of the first and second cable, wherein the system further comprises a first tension equalizing mechanism adapted to equalize the tension in the first and second cables, said first tension equalizing mechanism having interconnected first cable-engaging members to engage with the first and second cable, wherein said first cable-engaging members are movable relative to a first reference structure to be mounted on the vessel, and wherein said first tension equalizing mechanism is configured to move the first cable-engaging members under the effect of a difference in tension in the first and second cable so as to equalize said tensions.

Marine load raising and lowering system

The present invention relates to a marine pipelaying vessel for S-lay pipelaying an offshore pipeline and integrating one or more accessories into the pipeline, and a method for S-lay pipelaying wherein use is made of such a vessel. The vessel according to the invention comprises a hull () having a stinger end and a stinger () for guiding the launched pipeline in a curved pipeline trajectory, which stinger is pivotably connected to the hull, and an accessory handling J-lay tower () at the stinger end of the hull. The J-lay tower allows the pipeline and connected accessory to be laid in J-lay mode while connecting further pipe sections to the pipeline at least until the accessory has been lowered past below the retracted stinger. A stinger support assembly () is provided for supporting the stinger in a pipelay position, and for allowing movement of the stinger between the pipelay position and a steep downwardly pivoted retracted position by pivoting the stinger about its stinger pivot axis, wherein the stinger in the retracted position is away from the J-lay firing line.

Marine pipelaying vessel and method for pipelaying

An offshore pipelaying vessel for laying a pipeline on a seabed includes a pipeline-laying installation having a preassembly line; an inspection station; an assembly line with a pipeline assembly station to assemble a pipeline to be launched from the vessel by joining multi and/or single length pipe sections end to end; and a conveyor system for transporting multi and single length pipe sections, said conveyor system comprising an entry-and-exit location, wherein the conveyor system is configured to allow transportation of multi and/or single length pipe sections at least along the following routes: directly from the entry-and-exit location to the assembly line; indirectly from the entry-and-exit location to the assembly line via the preassembly line and said inspection station; and from the entry-and-exit location to the preassembly line and said inspection station, and after passing said inspection station directly to the entry-and-exit location.

Offshore vessel for laying a pipeline on the seabed, and a method for handling pipe sections

The invention is directed to a marine tensioner () for handling an elongated article from an offshore vessel. The tensioner comprises a tensioner frame (), multiple track units (), wherein each track unit comprises an elongated chassis () and an endless track supported by said chassis, wherein between the chassis of each track unit and the tensioner frame a connecting structure () is provided that at least allows for lateral motion of the track unit with respect to the passage axis () so as to adapt the position of the track unit. For each track unit a group of hydraulic squeeze cylinders () is provided between the tensioner frame and the chassis of the track unit. The tensioner further comprises a tilting mechanism () for the group of squeeze cylinders of each track unit, said tilting mechanism being adapted to tilt the hydraulic squeeze cylinders of a track unit between an operative position, wherein the squeeze cylinders are operative to exert a squeeze force in use of the tensioner for handling an elongated article, and an oversized article passage position.

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Schiedam, Netherlands

Ronny Lambertus Waltherus Nouwens