| 摘要 |
An arrangement for storing pipes in an offshore drilling installation below an upper deck carrying a derrick with associated equipment, comprising a pipe magazine below the upper deck, a horizontal transport means for the individual displacement of riser pipe sections between an aperture in the upper deck and storage means formed by a plurality of racks arranged along the path of the horizontal transport means, each carrying a plurality of pipe sections in vertical position. Each rack, as a turret, is rotatable about a vertical axis so that each pipe section, through rotation of the turret concerned, can be brought within reach of the horizontal transport means. The horizontal transport means comprises at least one assembly of a lower carrier trolley and an upper guide trolley movable, superimposed, along rails provided on the magazine floor, and below the deck, respectively. In the magazine, underneath the aperture in the derrick floor, there is provided a ramp tiltable between a vertical position aside the aperture and a position inclined with the top towards the aperture, with two carriages movable along the ramp, each having a pipe-engaging arm for gripping a portion of a pipe section. |
