Disconnectable FPSO - Technology To Reduce Risk in GoM
- Vidar Aanesland (APL) | Jens P. Kaalstad (APL) | Arild Bech (APL) | Anders Holm (Nexus Floating Production)
- Document ID
- Offshore Technology Conference
- Offshore Technology Conference, 30 April-3 May, Houston, Texas, U.S.A.
- Publication Date
- Document Type
- Conference Paper
- 2007. Offshore Technology Conference
- 4.5.4 Mooring Systems, 5.3.4 Integration of geomechanics in models, 6.5.2 Water use, produced water discharge and disposal, 4.1.5 Processing Equipment, 4.1.2 Separation and Treating, 5.1.1 Exploration, Development, Structural Geology, 4.1.4 Gas Processing, 4.2 Pipelines, Flowlines and Risers, 4.2.4 Risers
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The paper describes the Submerged Turret Production System (STP) and a state of the art disconnectable FPSO. The STP technology is well proven in the North Sea, South China Sea and other offshore arenas worldwide for both disconnectable FPSO's and for permanent mooring configuration. Lately it is being used for turret mooring of one of the worlds largest FPSOs located in Mexican waters in Gulf of Mexico on the PEMEX KuMaZa field. The FPSO is scheduled for first oil April 2007 and a short update of this project is presented.
The STP technology is built on the Submerged Turret Loading - STL technology used for Offshore Loading of Crude Oil, which is further developed for Discharge of Natural Gas and is the basis for the world's first Offshore LNG Receiving Terminal, Gulf Gateway - located in US Gulf of Mexico, Block WC 603. The paper presents this turret technology and how this technology can significantly reduce development risks in the Deep Water Fields in GoM and how it subsequently can have a positive impact on insurance premiums for the FPS/FPSO facility due to the ability to safeguard and sail away from Hurricanes.
The ability to easily connect and disconnect a single point mooring and riser system in a safe way is attractive for a number of reasons. The most obvious reason in Gulf of Mexico is to be able to remove the vessel in case of a hurricane. The technology described, has been developed over a period of 15 years, starting in the North Sea with the STL loading system for shuttle tankers and the disconnectable STP mooring and riser system for FPSOs. Basically the technology is the same, utilizing a submerged buoy integrating riser buoy and turret in one compact module which all together is disconnected.
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