| Popis: |
The purpose of this paper is to describe the conceptual TLP designs for the pre-salt area in Santos Basin, which is one of the alternative Dry Tree solutions evaluated for this area. The TLPs were evaluated for 2,200 m of water depth for Santos Basin environmental conditions, where extreme values for wave and wind are significantly higher than for Campos Basin. Three different TLP scenarios have been studied for specific process plants and number of dry completion wells (TTRs). Both wellhead platforms and full production, drilling and quarters platforms have been considered. Characteristics of hull dimensions are shown for the three scenarios with comparisons to existing TLP installations from other worldwide locations. Possible Brazilian construction sites, transportation, integration and installation are discussed. TLP motions, tendon tensions and other performance results are summarized and compared to design criteria. Composite tendon material was investigated and compared with steel tendons in terms of hull size and installation procedure. Main results of TTR analyses are presented, including strength, stroke, fatigue and interference between risers during operation and installation.Copyright © 2010 by ASME |
