Abstract: A method for handling and/or testing an in-riser landing string assembly onboard a floating vessel, which method comprises the use of an in-riser landing string assembly cart, e.g. a skiddable in-riser landing string assembly cart, having a cart base, e.g. a cart base configured to be skidded over skid rails on a deck of the vessel, and having a support tower erected on said cart base. The in-riser landing string assembly is arranged and retained in vertical orientation on said cart with the support tower providing lateral support for the in-riser landing string assembly, e.g. the in-riser landing string assembly being temporarily secured to the tower at different elevations along the height of the support tower.

Abstract: A system and method for casing drilling with a subsea casing drive adapted to engage at the outer circumference of the casing string, to impart a linear force and/or torque to the casing string, and such a subsea casing drive per se are disclosed. During drilling, the subsea casing drive is provided in a subsea unit further comprising a blowout preventer, a pressure control device and a mud pump with an outlet to a mud hose connectable to a surface vessel. The wellbore is drilled by driving the bottom hold assembly, BHA, and the casing string into the wellbore by the subsea casing drive, while discharging mud and cuttings via the mud hose and supplying mud to the BHA from the mud circulation system on the vessel via the landing string and casing string.

Abstract: A method for installation of a pile adapted to support an offshore wind turbine in which the piles are transported horizontally, positioned in a pile holder, rotated to a vertical orientation while being held by the pile holder, and subsequently lowered into the water while being held by the pile holder. The installation vessel is in a floating condition, and the pile holder is compensated for wave-induced motion of the vessel to maintain a predetermined X-Y location independent of the wave-induced motion of the vessel. A pile holding system, a pile holder, and a vessel comprising a pile holding system are also disclosed.

Abstract: An offshore drilling vessel includes a floating hull subjected to heave motion. The hull includes a moonpool and a drilling tower near the moonpool. A drilling tubulars storage rack is provided for storage of drilling tubulars. The vessel includes a heave motion compensation support that is adapted to support a slip device whilst performing heave compensation motion relative to the heaving motion of the vessel. A racking device is provided with a heave motion synchronization system that is adapted to bring a tubular retrieved from the storage rack in heave motion into a vertical motion that is synchronous with the heave compensation motion of the string slip device. The racking device includes vertical rails and at least two separate motion arm assemblies mounted on said vertical rails. Each separate motion arm assembly includes its own vertical drive which is electrically connected to the heave motion synchronization system.

Abstract: The invention relates to a drilling rig comprising: a tubular stand support tower, tubular stand storage rack, slip device for supporting multiple tubular stands, and a tubular stand connecting device. According to the invention the rig is provided with a tubular stand handling system, adapted to move a tubular stand between the storage rack and a position in the firing line above the tubular string slip device, and adapted to rotatable support the tubular stand in the firing line during spinning in, to allow for connecting the tubular stand with the tubular string, and during spinning out, to allow for disconnecting the tubular stand from the tubular string, the tubular stand handling system comprising. The tubular stand handling system comprises vertical rails and a lower motion arm assembly and an upper motion arm assembly comprising grippers, mounted on said vertical rails. Also provided is a weight compensation control system.

Abstract: A crane housing having a substantially cylinder-shaped circumferential wall with a lower section and lower end mounted to a slew bearing of substantially the same diameter includes a boom support structure to support an inner end of a pivotal boom arranged at a front side of the crane housing. The boom support structure includes at least two box elements of each of which an end portion overlaps with and is integrated with the upper section of the circumferential wall. Oblique strengthening ribs are mounted onto and integrated with a side of the circumferential wall and extend from a respective box element end portion in an oblique downwards direction towards the lower end of the wall.

Abstract: A wave-induced motion compensation crane and corresponding vessel and method are disclosed. The crane includes a motion compensation device at a tip end portion of the boom structure to compensate for X-Y wave-induced motion and a heave compensation device for Z-motion. The motion compensation device includes a moveable jib beam that extends in a substantially horizontal direction. The jib beam is slewable about a substantially vertical slew axis and translatable in a longitudinal direction of the jib beam. Preferably, the jib beam can be levelled based on the angular orientation of the boom structure.

Abstract: 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.

Abstract: A method for drilling a wellbore, wherein use is made of a top drive device including: multiple electric top drive motors each having a rotor, a transmission to which the rotors of the multiple top drive motors are operatively connected, a rotary stem or quill operatively connected to the transmission allowing the rotary stem or quill to be driven by the top drive motors in order to impart rotary torque to a drilling tubulars string connected to the rotary stem or quill of the top drive device, wherein at least one, preferably each, of the top drive motors has an operable clutch device configured to selectively connect and disconnect upon command the rotor relative to the transmission. The method includes providing a command to the one or more top drive motors having a clutch so as to selectively connect and disconnect the rotor thereof relative to the transmission by operating the clutch.

Abstract: The invention relates to a pile holding system to be mounted on a deck of a vessel, e.g. for installation of a pile adapted to support an offshore wind turbine, which pile holding system is configured to support the pile in an upright position at a pile installation location next to the vessel. The invention furthermore relates to a vessel provided with such a pile holder system, and to a method. The invention furthermore provide a pile holder.

Abstract: A wave-induced motion compensating crane includes a hoist assembly. At least two departure sheaves are mounted at opposite lateral sides of the jib. The object suspension device is supported both by two hoist cables extending laterally from the jib and a third hoist cable that runs via another departure sheave. The hoist assembly is adapted to hoist and/or lower the object suspension device with an object connected thereto, between a lower position and a position at a height up to the departure sheaves while the hoist cables together define a reverse pyramid, diverging upwards in between the object suspension device and the departure sheaves.

Abstract: A crane includes a crane structure defining a substantially vertical rotation axis; a boom connected with a first end to the crane structure to be rotatable about the vertical rotation axis; a trolley moveable along the boom in longitudinal direction of the boom; a hoisting cable and a load connector. The load connector is arranged at a free end of the hoisting cable to be connected to a load for hoisting purposes. The trolley includes a cable guide to guide the hoisting cable and an attachment configured to temporarily attach the load connector to the trolley to fix the position of the load connector relative to the trolley.

Abstract: A method for up-ending a longitudinal structure, being one of a foundation of an offshore wind turbine or a wind turbine tower to be installed on top of a previously installed foundation, wherein use is made of a crane The method includes providing a longitudinal structure with an upper end and a lower end in a substantially horizontal orientation; connecting the middle hoisting block of three main hoisting systems and one outer hoisting block of the three main hoisting systems to the upper end of the longitudinal structure; connecting another other outer hoisting block of the three main hoisting systems to the lower end of the longitudinal structure; and operating respective winches of the three main hoisting systems until the longitudinal structure is in a substantially vertical orientation with the upper end above the lower end.

Abstract: A combination of a drilling installation for drilling a well and a control and signal lines deployment module is disclosed. The drilling installation includes a rig floor slip device adapted to be cleared from a well centre opening to create a clear space around the well centre opening. The combination includes a temporary workspace floor, adapted to be mounted in the clear space at a level below a rig floor surface and to provide a workspace floor for an operator standing in said clear space on the work space floor, allowing the operator to secure at a securing level said one or more control/and or signal lines externally to a second tubulars string suspended from a module slip device.

Abstract: A semi-submersible drilling vessel has a deckbox structure, one or more pontoons, and multiple support columns extending upward from the one or more pontoons and supporting thereon the deckbox structure. An annular riser joints storage caisson extends downwardly from the deckbox structure, wherein the storage caisson delimits an annular storage space configured for storage therein of an annular array of riser joints in vertical orientation thereof. A riser joints carousel device is provided in the annular storage space, which riser joints carousel device is configured to carry an annular array of riser joints in vertical orientation thereof in a mobile manner relative to the annular storage caisson so that the array of riser joints is movable along an annular path through the storage spaced between the inner and outer wall of the storage caisson.

Abstract: A marine vessel and a method of operation of such a marine vessel include a crane with a boom including a main boom section and a jib section and a variable length stay mechanism. The lattice boom is movable from a hoisting position into a parking position by a routine including operating the variable length stay mechanism allowing the jib section to fold towards the main boom section. The crane is provided with a fixation device adapted to establish fixation of the jib section relative to the main boom section in a folded position. A boom rest is mounted on the hull. The routine further includes operating the luffing assembly to position the jib member of the folded jib section, fixated to the main boom section, in the parking position onto the boom rest.

Abstract: A slew bearing including a stationary bearing ring to be fixed to a base, and a moveable bearing ring which is to be fixed to a moveable object and which is concentric with the stationary bearing ring, the stationary bearing ring and moveable bearing ring being configured to enable rotation of the moveable bearing ring relative to the stationary bearing ring, wherein the moveable bearing ring comprises a top ring member, a bottom ring member, and a middle ring member in between the top and bottom ring member, the top, middle and bottom ring members each being formed by a plurality of ring segments wherein vertical joints between ring segments of adjacent ring members are not aligned to each other, wherein the top, middle and bottom ring member comprise a plurality of holes distributed about the circumference of the moveable ring, respectively, wherein the top, middle and bottom ring member are connected to each other by a plurality of bolts received in the corresponding holes of the moveable ring member, and

Abstract: A deepwater hoisting system includes a synthetic fibre rope winch assembly including a motor driven first winch and a length of synthetic fibre rope driven by said first winch. The synthetic fibre rope has an end remote from the first winch. The system further includes a steel wire winch assembly including a motor driven second winch and a length of steel wire driven by said second winch. The steel wire has an end remote from the second winch. At least the second winch is an active heave compensation motor driven winch. The system further includes a lifting block having a lifting block sheave, through which the synthetic fibre rope is run. The end of the synthetic fibre rope is connected to the end of the steel wire, so that the lifting block is suspended in a double-fall arrangement.

Abstract: The invention relates to a pile holding system configured to support the pile in an upright position at a pile installation location next to the vessel. The pile holding system comprises a pile holder and a pile holder support system. The pile holder support system is configured to be mounted on the deck of the vessel, to moveably support the pile holder, and to move the pile holder in a first direction between an inboard position and an outboard position. The pile holder, when in the outboard position, is located outside the contour of the vessel, for holding the pile in the upright position at the installation location. The pile holder, when in the inboard position with the first and second jaw in the open position, is located within the contour of the vessel.

Abstract: A method for installation of a pile adapted to support an offshore wind turbine in which the piles are transported horizontally, positioned in a pile holder, rotated to a vertical orientation while being held by the pile holder, and subsequently lowered into the water while being held by the pile holder. The installation vessel is in a floating condition, and the pile holder is compensated for wave-induced motion of the vessel to maintain a predetermined X-Y location independent of the wave-induced motion of the vessel. A pile holding system, a pile holder, and a vessel comprising a pile holding system are also disclosed.