Project Profile
Estimated development cost: US$582 million
Location: Block 206/4, 75 kms North West of Shetland
Production Expected: 2017
Peak Production Capacity: 17,000boepd
Water Depth: 300 metres
Start-up Year: 2014
Edradour gas field is located in Block 206/4a, Licence P1453 of the UK Continental Shelf (UKCS), about 75km north-west of the Shetland Islands. The water depth at the field is approximately 300m. Development of the field was officially launched in July 2014. Total E&P UK (TEP UK) operates the field with a 75% interest, while its partner Dong E&P (UK) holds the remaining 25% interest. The partners estimate the cost for the development of the field to reach £340m (approximately US$582 million). Production is expected to start in 2017 and continue for 15 years, delivering 17,000boepd at peak.
The field was discovered in January 2011, through the drilling of the exploratory well 206/4-2. The vertical exploratory well was initially drilled using the Sedco 714 rig. Gas and condensate are located at a depth of more than 3,500m within black sail sands in the Cretaceous reservoir. Development of the Edradour field primarily involves the transformation of the exploratory well into a production well. The field will be tied back to the neighbouring Laggan-Tormore facilities. Subsea works will include the installation of a four-slot steel tube manifold, tie-back of the field to the In-Line Tee 3 (ILT3) tie-in point of the Laggan-Tormore production pipeline system with a 16km-long and 12in diameter production pipeline, a six-inch diameter monoethylene glycol (MEG) pipeline to prevent formation of hydrates during transportation and a two-inch diameter piggy-backed service pipeline. The production flowline will be integrated with flowline end termination structures (FLETs) and a pipeline end manifold (PLEM) will be installed near ILT3. A 35km power, communications, hydraulic and chemical umbilical will also be installed from the Laggan manifold to the Edradour manifold. A proposal is also being made to develop the neighbouring Glenlivet field on Block 214/30a, with two wells tied back to the Edradour facilities via a 17km production pipeline.
Operators:
Total: Operator with 60% interest
Dong E&P: 20% interest
SSE E&P UK: 20% interest
Contractors:
Costain Upstream (previous EPC Offshore): Support services
Transocean: Drilling contract
Technip: Contract from Total E&P UK for the Edradour subsea development including fabrication and installation of 12in production pipelines and a six-inch MEG pipeline complete with a two-inch piggy-backed service line, while will also deliver and install the steel tube umbilical, and fabricate and install the pipeline end manifold, flowline end termination, flexible tails and rigid well tie-in spools
FMC Technologies, Inc.: Order from Total to supply subsea systems for its Edradour and Glenlivet fields offshore with scope of supply consisting of subsea equipment including manifolds and associated connections and controls equipment, wellhead systems, subsea tie back connection equipment and a subsea production tree.