Crane system for a cantilever
AssigneeFuture Production AS
InventorØystein Christensen
Life of this patent
Estimating the term…
Abstract
A crane system is for a cantilever belonging to a jack-up rig. The crane system has a crane with a suspension member, the suspension member being arranged over the crane. A skid beam is attached to a lower portion of the cantilever, the skid beam being displaceably connected to a plurality of slides arranged on the jack-up rig, the crane hanging on the skid beam. A method is for using the crane system.
Claims20
A crane system for a cantilever belonging to a jack-up rig, the crane system comprising:
- a crane with a suspension member, the suspension member being arranged over the crane,
- two skid beams attached to a lower portion of the cantilever, the two skid beams being displaceably connected to a plurality of slides arranged on the jack-up rig, so that the cantilever is movable relative to the jack-up rig via the two skid beams and the plurality of slides, wherein
- the crane hangs on a first skid beam only of the two skid beams via the suspension member, such that the crane is repositionable along the first skid beam independently of the second skid beam.
A method of using a crane system connected to a cantilever on a jack-up rig, the cantilever being provided with two skid beams which are attached to a lower portion of the cantilever and are displaceably connected to a plurality of slides arranged on the jack-up rig, so that the cantilever is movable relative to the jack-up rig via the two skid beams and the plurality of slides, the method comprising the step of:
- providing a crane with a suspension member, the suspension member being arranged over the crane;
- and
- suspending the crane under a first skid beam only of the two skid beams by letting the suspension member engage with the first skid beam, the crane being configured to be repositionable along the first skid beam independently of the second skid beam.
A crane system for attachment to a jack-up rig having a cantilever with a first skid beam and a second skid beam attached to a lower portion of the cantilever, the first and second skid beams are coupled to a plurality of slides arranged on the jack-up rig such that the cantilever is movable relative to the jack-up rig via the first and second skid beams and the plurality of slides, the crane system comprising:
- a crane with a suspension member coupled to only the first skid beam of the cantilever such that:
- the crane hangs on only the first skid beam of the cantilever via the suspension member;
- the crane is repositionable along the first skid beam independently of the second skid beam;
- and
- the crane is moveable along the first skid beam of the cantilever without moving into conflict with an intermediate structure or a tubular string positioned between the first and second skid beams.
Dependencies are inferred from the claim text.