A power harvesting device comprising at least one rotor mounted rotatably on a corresponding fixture on a base structure is disclosed. The device is at least partially submerged in a moving fluid and arranged to convert tangential components of fluid dynamic forces of the moving fluid into a first torque component onto the rotor through rotor vanes. In addition, rotor blades are arranged on or between the first rotor vanes to deflect axially moving fluid into a tangential direction to create a second torque component onto the rotor in the same direction as said first torque component. A system comprising a plurality of power harvesting devices with common power transfer means is also disclosed.
F03B 13/18 - Utilisation du mouvement relatif entre un élément déplacé par les vagues et un autre élément l'autre élément étant fixé, à au moins un point, par rapport au fond ou au bord de la mer
F03B 17/06 - Autres "machines" ou machines motrices utilisant un écoulement de liquide, p. ex. du type à clapets oscillants
F03D 3/00 - Mécanismes moteurs à vent avec axe de rotation sensiblement perpendiculaire au flux d'air pénétrant dans le rotor
A mooring line length adjusting device and methods is disclosed. The connecting device is arranged for connecting a lower section and an upper section of a mooring line to respective ends of the device and for adjusting a total length of said mooring line from a previous mooring line length to a new mooring line length. The upper end of the mooring line is connected to a floating unit. At least said lower section comprises a chain segment at its top end connected to the device. The device comprises a locking arrangement to lock said chain segment to the connecting device. The methods disclose steps and details how to use the device.
The invention relates to a system for restriction of hawser movement in a tandem mooring and loading system comprising a first floating structure being spread moored, a second floating structure, and a tandem mooring arrangement between the first and second floating structure. The tandem mooring arrangement comprises at least one hawser connected in a first end to a hawser connection arrangement on the first floating structure, and in a second end connected to a hawser connection point on the second floating structure and a loading arrangement. Wherein the system further comprises a hawser guide arrangement.
B63B 22/02 - Coffres d'amarrage ou bouées spécialement adaptés pour l'amarrage d'un navire
B63B 21/50 - Dispositifs d'ancrage pour navires spéciaux, p. ex. pour plates-formes flottantes de forage ou dragues
B63B 27/34 - Aménagement des équipements de bord pour l'embarquement ou le débarquement des cargaisons ou des passagers pour le transfert entre des navires en mer ou entre un navire et un poste situé en mer à l'aide de systèmes de canalisations
B63B 35/44 - Constructions, magasins, plates-formes de forage ou ateliers flottants, p. ex. portant des appareils séparateurs huile-eau
4.
A ENERGY ABSORPTION ARRANGEMENT FOR REDUCING PEAK MOORING LOADS
The invention relates to an energy absorption arrangement for reducing peak mooring loads between a mooring structure with a turret rotatable around a vertical axis, and a floating structure. The energy absorption arrangement comprises a rigid yoke horizontally rotatable in two axes and connected to the turret, a weighted pendulum member arranged on the end of the yoke and at least one mooring tether connected to the weighted pendulum member, and at least one energy absorption device for reducing peak mooring loads, comprising a fixed part connected to the floating structure, a movable rod and an absorption medium.
The invention describes a system for quick release of mooring and loading and unloading lines (10) between a loading and unloading station at sea and a vessel comprising a rigid yoke (6) with 3 degrees of rotational freedom, at least two mooring tethers (8), for connection between the outer end of the yoke and the vessel. The system features a method for quick release comprising the steps of disconnecting the loading and unloading lines (10), and connecting them directly or indirectly to a winch arrangement; lowering the line connectors (39,41) to be parked on a parking structure (22) on the yoke (6) if the swivel is above sea level, or on the sea floor (1) in a direction mainly parallel with the centerline of the yoke if the swivel is close to the sea floor; lowering the yoke by means of the winch arrangement (19,21) after the line connectors is parked on the parking structure if the swivel is above sea level, and lowering the yoke simultaneous with the line connectors if the swivel is close to the sea floor; stopping the winch arrangement (19,21) from pulling on the yoke (6) when the yoke has landed on the sea floor, and further lowering the mooring tethers into parked position on the sea floor by moving the vessel astern. The system also comprises means to absorb impact energy (23) at the bottom of the yoke (6).
B63B 27/34 - Aménagement des équipements de bord pour l'embarquement ou le débarquement des cargaisons ou des passagers pour le transfert entre des navires en mer ou entre un navire et un poste situé en mer à l'aide de systèmes de canalisations
The invention describes a dual axes connection device (2) for use with a mooring line (8), a line guide (15) and pulling means (21) for connecting a floating body and a fixed body. The connecting device comprises a dual axes hinge unit (3), with orthogonal rotational axes x and y, comprising means for fastening the unit (3) to the floating or fixed body. The connection device further comprises a connecting link (4) fastened to the hinge unit (3) comprising two parallel arms (20a, b), a funnel (7) connected to the two parallel arms (20a, b) enveloping the mooring line (8), and locking means (5) for locking the mooring line (8) to the funnel. The mooring line, the line guide (15) and connection device are positioned in one plane.
The disclosed invention relates to a connecting system for connecting a mooring line to a body comprising a first part being attached to the mooring line and connected with a pin having two ends, to a second part being attached to the body and having an arrangement for guiding the pin into a hang-off structure in the second part where the hang-off structure substantially comprises at least one hook. The system is characterized by a connecting structure for a temporary pulling means mounted on the first part in transverse direction to its longitudinal axis and eccentrically to an axial center of gravity of the first part. The invention relates also to a method regarding the application of the system.
A mooring line length adjusting device (2) and method is disclosed. The device is arranged for connecting lower and upper mooring line section to its respective ends and for adjusting the total length of the mooring line. The upper section of the mooring line comprises a chain segment (8) at its end connected to the device. The device comprises a locking element (10) to lock the chain segment to itself. A connecting structure for a temporary pulling means (12) to pull the device in a direction to transfer tension from the upper mooring line section to the temporary pulling means is a part of the device. The method discloses steps and details how to use the device.
A power harvesting device comprising at least one rotor (2) mounted rotatably on a corresponding fixture on a base structure (4) is disclosed, The device is at least partially submerged in a moving fluid (1) and arranged to convert tangential components of fluid dynamic forces of the moving fluid into a first torque component onto the rotor (2) through rotor vanes (5). In addition, rotor blades (6) are arranged on or between the first rotor vanes (5) to deflect axially moving fluid into a tangential direction to create a second torque component onto the rotor (2) in the same direction as said first torque component. A system comprising a plurality of power harvesting devices with common power transfer means is also disclosed.
The invention relates to a structural suspension of radial turret bearing wheels (16) in a turret bearing (6), comprising a rail support structure (13) mounted on a turret bearing support structure (7), a circular rail (14) mounted to the rail support structure, and a plurality of radial wheels running on the mainly vertical inner side of the rail. The invention is a mainly vertical flexible shaft, for each radial wheel being supported by an upper and lower support with a part of the shaft protruding like a cantilever with the radial wheel mounted close to the outer end. Furthermore the inner side of the rail is a frustum with the shortest radius at the top and an aperture of 2ϒ, and the outer mainly planar contacting surface of the wheel has an angle θ relative to the rotational axis of the wheel, and is overlaid with a convex curvature across the contacting surface. The axis of the wheel is tilting an angle A relative to the unloaded position of the axis, when the shaft is under maximum load, and an angle E between Y and the tangent of the curvature across the contacting surface is less than zero at the top for conditions without load and larger than A at the bottom for conditions with maximum load. The bearing of the radial wheel is able to slide on the shaft the same distance as the maximum vertical movement of the turret relative to the rail under maximum load. The flexibility and length of the shafts, the clearance between the wheels and rail, and the positions of the upper and lower shaft supports (45,33) are chosen such that the sector distributing the radial load on the rail (14) increases as the radial load increases.
The invention describes a suspension of axial turret bearing units (15) in a turret bearing (6) and comprises a rail support structure (13) mounted on a turret bearing support structure (7), a circular rail (14) mounted on the rail support structure, a plurality of axial bearing units (15, 71) running on the circular rail, a shaft for each axial bearing unit (15, 71) with the bearing unit attached to the outer end of the shaft, and an inner support structure (29) for supporting the inner end of each shaft. Furthermore the suspension of axial turret bearing units comprises an outer shaft suspension (21) close to each bearing unit, comprising a flexible collar 22 with an inner width similar to the width of the shaft and an inner height substantially higher than the height of the shaft, a transitional section (25) connected to the collar 22, a plate section (24) connected to the transitional section (25) and fastened to a bearing support structure (17, 17') on the turret, wherein the plate section 24 is large enough to spread the applied loads on said structure. It also comprise a releasable connection of the shaft to the inner support structure (29), wherein the shaft (19) is terminated just outside the inner support structure (29).
The invention relates to a rail system for large turret bearing comprising a turret bearing support structure (7), a rail support ring (13) The invention relates to a rail system for large turret bearing comprising a turret bearing support structure (7), a rail support ring (13) provided with a L-shaped cross section comprising an inward directed wedge mating face (46), at least two rings of radially elongated segment bolt holes (45), and an outermost ring of wedge bolt holes, a plurality of rail segments (20) together forming a complete circle with an outer radius slightly smaller than the radius of the wedge mating face (46) of the rail support ring (13). Each segment (20) comprise a sloped outer wedge mating surface (38), a downward facing contact surface with threaded bolt holes corresponding to the bolt holes (45) in the rail support ring (13), an upper largely horizontal surface, and an inner largely vertical surface. Furthermore, the rail system comprises trapeze shaped wedges (43) each with at least one bolt hole and corresponding bolt (s), adapted to be tightened down between the wedge mating face (46) of the support ring and the sloped outer wedge mating surface (38) of the segments, and rail bolts (24) for fastening the rail segments (20). Furthermore the invention comprises a method for mounting the rail system and a method for replacing a rail segment.
The invention relates to ball joint for connecting a riser subjected to high tensile and angular loads to a pipe connector on a floating unit, the ball joint comprising: • a suspension house (16) comprising a spherical inner side (25), a suspension house neck (10) and upper flange (11), wherein a toroidal bearing ring (23), having a bearing liner (24) fastened to its inner surface, and an upper mating surface (51) fastened to the corresponding mating surface (22) on the lower side of the suspension house (16); • a spherical suspension ball (14), which is complementary to the inner side of the suspension house (16), comprising a suspension ball neck (13) and lower flange (12), • wherein the suspension ball (14) is provided with a recessed portion (53) on the inside of the top portion of the suspension ball (14), the recessed portion comprising a tangential/cylindrical surface (46) and a transverse circular plane surface (39); and a seal ring (17) is positioned on top of a bias ring (19) in the recessed portion (53); • wherein the seal ring (17) provides at least one spherical seal (29, 31) in sealing contact with the inside of the suspension house (16) and at least one piston seal (28, 30) in sealing contact, with an inner cylindrical surface (46) of the recessed portion (53) and wherein the bias ring (19) provides biasing means (32) biasing the seal ring (17) in a direction parallel to the axis of the neck (13) and away from the bias ring (19).
F16L 27/053 - Raccords universels, c.-à-d. avec une liaison mécanique permettant un mouvement angulaire ou un réglage des axes des parties raccordées dans une direction quelconque avec surfaces de contact partiellement sphériques maintenues en place par des boulons traversant des brides
F16L 27/067 - Raccords universels, c.-à-d. avec une liaison mécanique permettant un mouvement angulaire ou un réglage des axes des parties raccordées dans une direction quelconque avec surfaces de contact partiellement sphériques et joints particuliers entre les surfaces de contact les moyens d'étanchéité étant actionnés par la pression du fluide
F16L 27/073 - Raccords universels, c.-à-d. avec une liaison mécanique permettant un mouvement angulaire ou un réglage des axes des parties raccordées dans une direction quelconque avec surfaces de contact partiellement sphériques et joints particuliers entre les surfaces de contact l'une des surfaces de contact formant en même temps moyen d'étanchéité
14.
DEVICE FOR TERMINATION OF A RISER IN A FLOATING STRUCTURE
The invention describes a device for coupling a riser to a floating structure, wherein the device comprises: a flexible joint comprising a lower and upper flange, and a ball joint or flexible part with a rugged housing comprising a circular mating face at its rim; a connection pipe comprising a lower and upper flange; a guide pipe being firmly fixed to the floating structure comprising a hang off face on its upper rim, and a cylindrical rugged body having a diameter which is larger than the flexible joint; a coned hang off structure positioned underneath the top flange of the connection pipe comprising: a toroidal coned section narrowing towards its lower part, with a cylindrical inner surface contacting the connection pipe, a spline divided in at least two parts that fits in to a groove at the top of the inner cylindrical surface and a groove in the connection pipe, at least two hang off segments attached to the perimeter of the cylindrical part of the coned hang off structure, the segments providing a circumferential load transferring surface complementary to said hang-off face on the upper rim of the guide pipe; and an adapter fastened to the housing of the flexible joint comprising: a mating surface at the lower end of the adapter complementary to a mating surface at the rim of the flexible joint housing; a lower circumferential support region close to the mating surface; a further circumferential support region positioned along the length of the connection pipe; a coned section above the circumferential support region, ending at a distance from the hang off structure and in circumferential sliding contact with the connection pipe; where at least one of the support regions and the housing of the flexible joint being in close contact with the lower part of the guide pipe.
E21B 17/01 - Colonnes montantes pour têtes de puits immergées
E21B 19/00 - Manipulation de tiges, tubages, tubes ou autre objets analogues à l'extérieur du trou de forage, p. ex. dans la tour de forageAppareils pour faire avancer les tiges ou les câbles
15.
SUBSEA REMOTELY OPERATED CHAIN TENSIONING AND SLACKING SYSTEM
A mooring line tension adjusting system comprises a connecting device, connecting and locking two adjacent chain sections of a mooring line, and an operating device, moving one of the chain sections inside the connecting device to change the tension of the mooring line. The system has the inventive feature that the operating device is remotely attachable to the connecting device before a tensioning operation and detachable from the connecting device after the tensioning operation. The invention discloses also a method how to use the tensioning system.
The invention relates to a hollow tube connector (1) for detachable fluid-tight connecting of two connector parts (2,3) comprising a first connector part (2) where one of its two axial ends (5,16) is adapted for connecting to at least one pipeline on a vessel, a second connector part (3) where one of its two axial ends (5,16) is adapted for connecting to at least one pipeline located on an STP-buoy and where the coupling surfaces to the remaining axial ends (6,15) associated with the first and second connector part (2,3) comprise at least one non-crossing groove (35,36) going around a circumference of the contact surfaces, where the at least one groove (35,36) located on one of the contact faces (70) has a mirror-imaged groove located on the other contact surface (71) such that the two opposite grooves form an encompassing cavity (60,61) on contact of the contact surfaces (70,71). At least one of the contact surface areas (70a-e, 71a-e) is tapered with respect to the axis perpendicularily to the axial axis (100) such that a pre-tensioned abutment is formed which increases the resistance to relative motions in between the contact faces (70,71). The tube connector (1) also comprises a suitable clamping device (22,22') in order to clamp the first and second connector part (2,3) to each other to form a gas-tight or substantially gas-tight connection.
E21B 43/01 - Procédés ou dispositifs pour l'extraction de pétrole, de gaz, d'eau ou de matériaux solubles ou fusibles ou d'une suspension de matières minérales à partir de puits spécialement adaptés à l'extraction à partir d'installations sous l'eau
F16L 23/02 - Raccords à brides les brides étant raccordées par des organes tendus axialement
F16L 23/16 - Raccords à brides caractérisés par les moyens d'étanchéité
A mooring system for a vessel and a method of mooring a vessel are provided. The mooring system comprises a turret structure; a swivel unit mounted on the turret structure; a bearing assembly for rotatably mounting the turret structure at deck level of the vessel such that the turret structure extends into a moonpool of the vessel and such that the swivel unit is disposed above deck level; a plurality of conduits for fluid communication disposed in the turret structure; a buoy structure retrievable into the moonpool of the vessel and connectable to the turret structure; a locking assembly for mechanically locking the buoy structure to the turret structure; and wherein the turret structure is rotatable as one to align the conduits to corresponding riser valve structures on the buoy structure prior to mechanically locking the buoy structure to the turret structure.
brevets
