JACKET FOR OFFSHORE STRUCTURE

摘要

A jacket 4 for an offshore structure comprises a plurality of jacket modules 6 stacked one above the other, each of the jacket modules having multiple hollow legs 10; and a plurality of piles 8 passing through the hollow legs 10 for securing the jacket 4 to the sea-bed; wherein the piles 8 include: foundation piles 8a passing through legs 10 of a lowermost jacket module 6a, with a lower part of each foundation pile extending downward below the lowermost jacket module 6a into the sea-bed, and an upper part of each foundation pile extending upward out of the tops of the legs 10 of the lowermost jacket module 6a and into legs 10 of a second jacket module 6b located atop the lowermost jacket module 6a such that the upper parts of the foundation piles 8a extend into the legs 10 of the second jacket module 6b by a height less than the height of the jacket modules 6; and follower piles 8b within the legs 10 of the second jacket module 6b located atop the upper parts of the foundation piles 8a and extending upward out of the tops of the legs 10 of the second jacket module 6b.

主权项

1. A jacket for an offshore structure, the jacket comprising:
a plurality of jacket Modules stacked one above the other; each of the jacket modules having multiple hollow legs; and a plurality of piles passing through the hollow legs for securing the jacket to the sea-bed; wherein the piles include: foundation piles passing through legs of a lowermost jacket module, with a lower part of each foundation pile extending downward below the lowermost jacket module into the sea-bed, and an upper part of the each foundation pile extending upward out of the tops of the legs of the lowermost jacket module and into legs of a second jacket module located atop the lowermost jacket module such that the upper parts of the foundation piles extend into the legs of the second jacket module by a height less than the height of the jacket modules; and follower piles within the legs of the second jacket module located atop the upper parts of the foundation piles and extending upward out of the tops of the legs of the second jacket module.