Hydraulic and earth engineering – Marine structure or fabrication thereof – Tension leg platform
Patent
1995-04-07
1996-06-11
Ricci, John A.
Hydraulic and earth engineering
Marine structure or fabrication thereof
Tension leg platform
405224, 114264, 114266, B63B 3544
Patent
active
055250114
ABSTRACT:
A modular offshore movable drilling platform support includes a double-layer dodecahedrous float having an outer dodecahedrous structure and an inner dodecahedrous structure defining a sealed volume therebetween. The outer dodecahedrous structure is anchored to the ocean floor by tout mooring polyester fiber ropes or aramid guide ropes, and the inner dodecahedrous structure is tied to the ocean floor directly through the use of a riser system. The sealed volume between the inner and outer dodecahedrous structures provides a buoyancy force upon installation of the dodecahedrous float in its position offshore. Both the outer and the inner dodecahedrous structures have 12 pentagonal surfaces formed by the use of rigid Y substructural space components, which contribute to simplified erection process with substantial saving in erection time. The need for expensive underwater welding is minimized in this construction. This system can be easily salvaged or moved to other locations for reuse with a minimum environmental impact when it is found that no productive well can be made at the exploratory site. Once a production well is located, the platform can be converted to a permanent production platform with very little effort.
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Cotropia Charles
Ricci John A.
San Tai International Corporation
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