Abstract: A hoisting device includes a hoisting cable, a winch, a crown block and a traveling bottom block provided with a load attachment device. Both the crown block and the traveling bottom block include one or more sheaves having an essentially horizontally extending rotation shaft about which sheaves the hoisting cable is reeved. At least some of the traveling bottom block sheaves are associated with a releasable connector, and are thereby detachable from the load attachment device and displaceable to an inoperative position. The rotation shaft of multiple traveling bottom block sheaves and multiple crown block sheaves is essentially perpendicular to the rotation shaft of remaining multiple traveling bottom block sheaves and remaining multiple crown block sheaves.

Abstract: A vessel (2) for handling subsea equipment comprising a subsea equipment hoist system including a winch and a hoist cable (3) for lowering and retrieving subsea equipment (5) in a hoist area of the vessel, a subsea equipment motion restraining and guidance system for restraining subsea equipment motion relative to the vessel in the hoist area. The subsea equipment motion restraining and guidance system includes a main trolley (7), an auxiliary trolley (8) and a vertical trolley guide structure (9) mounted on the hull of the vessel that allows for vertical travel of the trolleys and further a top end engagement member (10), which is movably supported by said main trolley and which is adapted to engage on a top end of the subsea equipment, and one or more rail engaging members (3a) mounted on said auxiliary trolley, each adapted to engage on a vertical rail (11) mounted on said subsea equipment as said subsea equipment passes vertically by said auxiliary trolley.

Abstract: This invention relates to a traction winch for a cable (8) or the like, said winch comprising a winch frame, at least two sheave assemblies (10,11) each having at least a first sheave (4) and a second sheave (5), each sheave having a single circumferential friction surface (104,105) for the cable (8). The winch further comprises at least two rotatable driveshafts, joumalled in the winch frame in a side-by-side arrangement, each drive shaft (3) being associated with a sheave assembly (10,11), and at least one motor for driving the driveshafts (3). The winch according to the invention comprises a differential assembly being provided between each driveshaft (3) and sheave assembly (10,11) so as to allow for different rotational speeds of the sheaves (4,5) during operation of the traction winch due to cable elongation.

Abstract: A floating structure includes a riser support system. The riser support system includes multiple carts, each suitable for moveably connecting a risers to the riser support system. A cart includes a support frame and one or more riser tensioners for connecting the support frame to a riser. Each cart is designed for being supported by a cart support structure in a production dock and in a drilling dock, and for being transferred by a crane between the production dock and the drilling dock. Thus, the riser support system enables transferring risers and their riser tensioners within the moonpool from a production dock to a drilling dock without the need of disconnecting and/or reconnecting the risers to extra riser tensioners for support in the drilling dock or during transport.

Abstract: A vessel (2) for handling subsea equipment comprising a subsea equipment hoist system including a winch and a hoist cable (3) for lowering and retrieving subsea equipment (5) in a hoist area of the vessel, a subsea equipment motion restraining and guidance system for restraining subsea equipment motion relative to the vessel in the hoist area. The subsea equipment motion restraining and guidance system includes a main trolley (7), an auxiliary trolley (8) and a vertical trolley guide structure (9) mounted on the hull of the vessel that allows for vertical travel of the trolleys and further a top end engagement member (10), which is movably supported by said main trolley and which is adapted to engage on a top end of the subsea equipment, and one or more rail engaging members (3a) mounted on said auxiliary trolley, each adapted to engage on a vertical rail (11) mounted on said subsea equipment as said subsea equipment passes vertically by said auxiliary trolley.

Abstract: A heave motion compensator (30, 40, 70, 100, 140, 300) for compensating heave motions comprises a cylinder (41) and a piston (44) delimiting a variable volume fluid chamber (49) in said cylinder (41), wherein said piston (44) can oscillate within said cylinder (41), said piston (44) being provided with a seal (48) frictionally engaging said cylinder. The compensator further includes a motor (65) that causes said seal (48) to revolve relative to said cylinder (41) so as to obtain a dynamic friction regime between the seal (48) and the cylinder (41). In a possible embodiment the motor (65) is arranged to rotate said piston (44), and the seal (48) is mounted on said piston (44) so as to rotate along with said piston (44).

Abstract: The marine pipelaying system for vertical or near vertical laying of an offshore pipeline includes a main supporting structure; a pipe connecting station, wherein a pipe section is connected to an uppermost end of a previously launched pipeline; a static clamp adapted for releasably securing the uppermost end of the previously launched pipeline, wherein the static clamp is adapted to support the weight of the previously launched pipeline; a mobile clamp adapted for releasably securing the previously launched pipeline at a position below the static clamp, wherein the mobile clamp is adapted to support the weight of the offshore pipeline as the offshore pipeline is released from the static clamp; and a mobile clamp hoist connected to the mobile clamp.

Abstract: A drilling rig having a deck capable of being used offshore and a method for commissioning a well using the drilling rig and a method for decommissioning a well using the drilling rig, wherein the drilling rig comprises: a cantilever which is mounted so as to be moveable in a first direction and a second direction; a Multi Purpose Tower mounted on the cantilever; a supporting cart disposed between the cantilever and the deck which in turn is movably fixed on the deck of the drilling rig; at least two friction reducing devices attached to the supporting cart; and wherein the cantilever can slide relative to the drilling platform.

Abstract: The invention is a multipurpose system for reeling tubing secured to a platform made of a reel support frame removeably secured to a platform, a reel containing tubing removeably secured to the reel support frame, a reel drive for rotating the reel disposed on the reel support frame, a tower for suspending the straightener and the guide, a support frame attached to the tower, a guide disposed on the support frame for receiving tubing from the reel and ending the tubing forming bent tubing, a straightener disposed on the support frame for receiving the bent tubing and forming straightened tubing, a rotating connection for connecting the support frame to the tower, a tensioner frame removeably mounted on the platform, and a tensioner secured to the tensioner frame for receiving the straightened tubing, supporting the straightened tubing and moving the straightened tubing.

Abstract: A drilling rig having a deck capable of being used offshore and a method for commissioning a well using the drilling rig and a method for decommissioning a well using the drilling rig, wherein the drilling rig comprises: a cantilever which is mounted so as to be moveable in a first direction and a second direction; a Multi Purpose Tower mounted on the cantilever; a supporting cart disposed between the cantilever and the deck which in turn is movably fixed on the deck of the drilling rig; at least two friction reducing devices attached to the supporting cart; and wherein the cantilever can slide relative to the drilling platform.

Abstract: A Jack Up drilling rig having a deck capable of being used offshore made of a cantilever which is mounted so as to be moveable in a first direction and a second direction, a Multi Purpose Tower fixably mounted on the cantilever, a supporting cart disposed between the cantilever and the deck of the Jack Up drilling rig, and at least four friction reducing devices, wherein the Jack-Up drilling rig is also used in methods for installing and decommissioning drilling equipment on a sub-sea well.

Abstract: An electric lamp has a cap, which is secured to a light-transmitting lamp vessel having an electric element. The lamp cap has a projecting contact pin. An electric conductor is connected to the electric element and the contact pin. The contact pin is unilaterally deformed in an inward direction so as to form an indentation for fixing the electric conductor. The electric conductor in the contact pin does not extend substantially beyond a boundary of the indentation. The indentation has a pinch portion. The pinch portion deepens at an angle a with respect to the axis, where 25°≦&agr;≦45°. In addition, the indentation has a press portion for fixing the electric conductor in the contact pin.

Abstract: A capped electric lamp comprises a cap which is secured to a light-transmitting lamp vessel having an electric element, which lamp cap is provided with a projecting contact pin (4) having an axis (11). An electric conductor (5) is connected to the electric element and the contact pin (4). The contact pin (4) is unilaterally deformed in an inward direction so as to form an indentation (15) for fixing the electric conductor (5). According to the invention, the electric conductor (5) in the contact pin (4) does not extend substantially beyond a boundary (16) of the indentation (15). Preferably, the indentation (15) has a pinch portion (17) for weakening the electric conductor during the deformation of the contact pin (4). Said pinch portion (17) preferably deepens at an angle &agr; with respect to the axis (11), wherein 25°≦&agr;≦45°. In addition, the indentation (15) has a press portion (18) for fixing the electric conductor (5) in the contact pin (4).