Project Profile
Value: US$1.2 billion
Location: Northern North Sea, 160 km northeast of the Shetland Islands
Water Depth: 186 metres
Recoverable Reserves: 869 million barrels
Peak Production: 156,000 bpd of oil and 12,000 bpd gas condensate, 60mmscf/d gas
Current Production: 55,000 bpd
Discovery Year: March 1974
Start-up Year: August 1983
The Magnus oilfield is a large oilfield in the United Kingdom\'s zone of North Sea. It is located 160 kilometres northeast of the Shetland Islands. The field is located mainly in Block 211/12a. Resources are estimated to total 1.54 billion barrels (245×106 m3) of oil, of which 869 million barrels (138.2×106 m3) are recoverable reserves.
The Magnus oilfield was discovered in March 1974 by BP. The discovery was made 2,709 metres below the seabed in the younger sands of the Late Jurassic by the semi-submersible drilling rig Sedco 703. Similarly to several other fields in the area, the field was named after the Viking saint–Magnus of Orkney. Fabrication of the Magnus structure began in 1980 at Highland Fabricators\' yard at Nigg Bay in the Cromarty Firth. The jacket of the Magnus platform, the main oil export pipeline to the Ninian Central Platform, and the Northern Leg Gas Pipeline to Brent A were installed by 1982. In May 1996, the production started at the South Magnus field. First oil from the field was achieved in August 1983.
EOR project
The enhanced oil recovery project was proposed in 2000. It was implemented in 2003. The Magnus EOR project was developed as a single central combined drilling and production platform of conventional steel. Produced oil is transported through a 24in crude oil pipeline to the Ninian Central platform while gas is piped ashore using a joint pipeline linked to the Shell/Esso Far North Liquid and Associated Gas System (FLAGS), which runs to St. Fergus. Fugro carried out a major integrated pipeline route survey for BP for the Magnus EOR Project. This was followed by an initial geophysical and bathymetric reconnaissance survey over a wide survey corridor to best define a suitable route for the pipeline, using Fugro’s vessel Geo Scanner.
Operator:
BP: 75% interest
EnQuest: Operator with 25% interest (since January 2017)
Contractors:
Transocean: Drilling contract
Fugro: Integrated pipeline route survey
Bredero Price Coaters: Ppipe coating
Stolt Offshore : Subsea construction and diving support
Wood Group: Platform modifications
Amec: Modifications at SV terminal
Halliburton: Subsea construction and ROV support
J P Kenny: Pipeline design and procurement services
Kvaerner Oil & Gas: Subsea control system design and supply
McGregor Energy Services: Fabrication of subsea hardware
BEL Valves: Valve supply
Odfjell Drilling: Platform Drilling Services contract
Floatel International: Provision of an accommodation and construction support vessel for Magnus Life Extension Project
Cape plc: Contract by BP within the Magnus Life Extension project, as part of its North Sea renewals programme.
Bibby Offshore: Supply of air and saturation diving support to perform operations including spool and flowline disconnection, evaluation and installation of conductor clamp guides, alignment clamp installation and modifications to a gas lift system. (July, 2016)