Previous industry discussion has notionally limited the TLP concept to water depths less than 1,500 m (~ 4500 ft). This paper presents the results of analysis performed to clarify the limits for mono-colunm TLP's and explores means to extend the applicable range of TLP's to ultra-deep water. Detailed coupled motion and fatigue analyses were carried out for a realistic production case over a wide range of water depths (1,000 to 3,000 m) for moderate (Gulf of Mexico) and mild (West Africa) conditions. The existing Matterhorn SeaStar TLP design was used as the test platform for the study. The topsides payload and surface-well count were held constant while adapting the hull and tendons for increasing water depth. Consideration was given to both conventional and non-conventional, but near-term, tendon solutions. Following the engineering analysis, design alternatives are compared on an economic basis.
Design of mono-column TLPs for ultra-deepwater applications
Konstruktion von Einsäulen-TLPs für Ultra-Tiefwasser-Anwendungen
2003
6 Seiten, 4 Bilder, 6 Tabellen, 5 Quellen
Conference paper
English
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