Project Profile
Value: US$4,209 million
Location: 120 km west of Shetland, UK
Start-up Year: Q4 2014
Reserves: 988 billion ft³
Water Depth: 600 m
The Laggan field lies some 120 kilometres west of Shetland and has water depths of 600 metres. The Tormore discovery lies in block 205/5a in water depth of about 610 metres, some 100 kilometres North West of the Sullom Voe Terminal on the Shetland Islands. This discovery lies 15 kilometres south west of Laggan. The Laggan and Tormore fields have estimated recoverable reserves of 988 billion cubic feet and are expected to reach a peak production rate of 494 million cubic feet per day.
The plan includes two six-slot templates, the SPS, two 143km 18-inch flowlines doing a loop, and two lengths of 234km of 30-inch export pipeline to a processing plant at Sullom Voe on the Shetland Islands, plus a 222km dry gas export line from Sullom Voe to the FUKA pipeline. The plan will also see 4 wet gas tees added to the pipelines so that in the future third parties will be able to tie-in satellite projects to the system. Phase I will see four development wells drilled at Laggan and two at Tormore; Phase II will see one well drilled on each field. These will be developed via two, 18-in, multiphase flowlines to Shetland, where the product will be processed onshore and transported, via a new gas pipeline, from the island to the Frigg infrastructure and onwards to St Fergus. Condensate and gas will then be separated and exported by tanker to Sullom Voe. The field life is expected to be 30 years.
Operators:
Total: Operator with 60% interest
INEOS: 20% interest
SSE E&P UK: 20% interest
Contractors:
JEE Limited: Pre-FEED engineering services
Joint venture for Conceptual Design:
Doris Engineering
Offshore Design Engineering Ltd. (ODE)
Joint venture for 2\" service linepipe supply:
Salzgitter Mannesmann International
V&M (Vallourec & Mannesmann)
Allseas: Flowlines and export lines
AMEC: Conceptual study for the shallow-water platform
Corus Tubes: 18\" production linepipe and 30\" export linepipe supply contract
Ecosse Subsea Systems: Seabed clearance exercise using the SCAR1 trenching tool to remove up to 1,000 boulders that were delaying cable lay and umbilical installation
FloaTec (Floatation Technologies Inc): Conceptual study for floater
FMC Technologies: Subsea production system supply and services
Heerema: Installation of 18\" & 30\" pipelines and onshore pipelines
J P Kenny Caledonia Ltd.: Conceptual study for subsea
Nuovo Pignone SpA.: SGP HP gas export compressor packages
Roadbridge Ltd.: SGP Earthworks
Seadrill Ltd.: Supply of drilling rig
Subsea 7 Inc.: Subsea production system
Asset Guardian Solutions Ltd (AGSL): Provision of its software management platform Asset Guardian. The software will help to secure the integrity and improve management of the process control software. (March, 2016)
North Atlantic Drilling Ltd (NADL): a renewal contract for semi-submersible West Phoenix. (November, 2016)
Sub Contractors:
ClampOn: Subsea sand and vibration monitors and PIG detectors for FMC
Expro Group plc: Connector systems for FMC
Grenland Group: Template structures and two manifolds for FMC
Nexans: Subsea electro-hydraulic control umbilicals for Subsea 7
ShawCor Ltd.: Pipeline coatings for Corus