| 摘要 |
<p>An offshore tension leg platform (40) having a deck (42), a hull (41), and a plurality of elongate tendons (46) securing the hull to an ocean floor fondation (43) provides well workover and production capabilities for autonomous operation and can be installed and operated in any water depth and sustains any environmental loading conditions. The hull supports well risers (48) of well trees (50) located below the water surface at an elevation in close proximity to the connections of the tendons to the hull. Alternatively the risers and trees may be supported above water by a deck or the trees may be located on the seabed. A workover rig (67) supported by a perimeter trackway (66, 166) on the deck is positioned over any of the risers for workover operations. The hull is designed to minimize loadings in the tendons.</p> |
