SPAR STRUCTURES

摘要

A spar platform comprising a deck; a buoyant tank assembly, comprising a first buoyant section connected to the deck, the first buoyant section comprises an aspect ratio from 0.001 to 1, the first buoyant section aspect ratio defined as a vertical draft of the first buoyant section divided by a diameter of the first buoyant section; a second buoyant section disposed beneath the first buoyant section, the second buoyant section comprises an aspect ratio from 0.001 to 2, the second buoyant section aspect ratio defined as a vertical height of the second buoyant section divided by a diameter of the second buoyant section; and a rigid buoyant section spacing structure connecting the first and second buoyant sections in manner providing a horizontally extending vertical gap there between, the gap comprises an aspect ratio from 0.15 to 2, the gap aspect ratio defined as a vertical height of the gap divided by a diameter of the first buoyant section; a counterweight; and a counterweight spacing structure connecting the counterweight to the buoyant tank assembly.