| Popis: |
The Davy and Bessemer / Beaufort satellite fields, located in the UK Southern North Sea, have recently been developed with the use of the AMOSS (Amoco Minimum Offshore Supporting Structure) Technology. The Davy field was originally planned for development in 1991. However the project was rejected due to high development costs. This led to a re-evaluation of the development options and to the selection of a very simple monotower concept that was common in the Gulf of Mexico and other areas of the North Sea, but was a new concept for the UK sector. The field developments were fast track, with platform installation being achieved only 13 months after project approval. An Engineer Procure Install and Commission (EPIC) contracting philosophy was selected for the platforms. The topsides were designed to utilise fiber reinforced plastic FRP as much as possible to keep down topside weight. Another first was the use of two wind turbines for power generation. Horizontal wells were evaluated and selected to control the production of water in these high permeability, low relief reservoirs. The use of horizontal wells resulted in the need for detailed well planning and close co-operation between the Reservoir, G&G and Drilling teams. The platforms were designed as Normally Unattended Installations (NUI's) and are operated remotely from the onshore Bacton terminal. Platform intervention and maintenance were prime considerations in the design of the topsides. Well test data gathering is also done remotely with the use of downhole flow meters, pressure gauges and a data logger on the platform, which maximises reservoir management data gathering without visiting the platform. Future developments are being planned to utilise an even simpler AMOSS structure. necessary for the development of smaller satellites in the current environment of suppressed gas prices. |
