Project Profile
Value: US$2,300 million
Location: North Tampen, PL373S, Norway
Reserves: 21 million barrels of oil
Area: 81,545 acres (330 square kilometres)
Start-up Year: 2013
The project will see the development of an oil and gas discovery in Petroleum Licence 373S (Block 34/3). Exploration well 34/3-1S, located northeast of the Snorre field in the northern North Sea, on the extension of the Tampen Spur proved an oil accumulation in reservoir of Jurassic age. The main Knarr reservoir will be produced by two production and two water injection wells. The oil will be loaded from the FPSO onto tankers, and the gas will be transported via the FLAGS pipeline to St. Fergus terminal in the UK. FPSO will be able to store up to 800,000 barrels of oil. The pipeline will run for 30km in the Norwegian sector and 80km across the UK sector. The tie in point for the pipeline will be close to the Brent field at the location of the existing Tampen link.
The UK section of Knarr work will include installation and commissioning of a PLEM and associated spool piece structures for tie in to FLAGS, installation and commissioning of a future Tee piece and associated structures for tie-in to FLAGS. Work will also see the installation of graded rock dump and concrete mattresses to protect subsea structures and crossing points. The development plans cover the Knarr (Jordbaer) Central structure, with recoverable reserves of 75 million barrels of oil equivalent, and the undrilled (Knarr (Jordbaer) Vest structure. BG plans to drill nine development wells, including four producers and five water injection wells. Two production wells will be drilled at Knarr Central and two at Knarr West. This structure is estimated to have unrisked reserves of 21 million barrels of oil. The field is expected to produce for around six to 20 years.
Operators:
Shell: Operator with 45% interest
Idemitsu Oil & Gas: 25% interest
Wintershall Norge ASA: 20% interest
RWE Dea Norge: 10% interest
Contractors:
AGR Enhanced Drilling: Riserless Mud Recovery services
Bladt Industries: Load for delivery the final consignment of suction anchors
Consortium for construction of the FPSO:
Teekay Petrojarl ASA
Samsung Heavy Industries
FMC Technologies: Detailed engineering study related to equipment and services to support the Jordbaer field
National Oilwell Varco: Ordered the 12 anchors, which weigh 1,212 tons, to secure six flexible oil pipelines to the seafloor
Sevan Marine ASA: FPSO study
Subsea 7: SURF contract
Transocean: Drilling semi-submersible Transocean Searcher
Wood Group Kenny: PMC contract and FEED Contract
Kystdesign: Contract to build a new subsea technology developed for inspection of the Knarr gas pipeline The Surveyor Interceptor Remotely Operated Vehicle (ROV) had its first commercial outing in the North Sea for the Knarr Gas Pipeline.
MMT and ReachSubsea: Contract for Knarr inspection job, acquiring data that were processed and analysed continuously on the Edda Fonn support vessel to be able to provide a field report to Gassco on demobilisation.
Aptomar: Five-year contract from BG Group to deliver field monitoring services at the Knarr field in the Norwegian North Sea. The deal requires Aptomar to offer field monitoring services, including the continuous monitoring of offshore traffic and safety zones to identify and track vessels on a collision course with offshore assets. The company will also provide continuous monitoring and detection of unintended spills, and be a part of the second line response team. Aptomar will set up a new marine control centre in Trondheim, Norway for extended field monitoring services.
4Subsea: Integrity management
Sub Contractors:
DOF Subsea Norway: Mooring pre-installation, tow-out and hook-up work for Teekay Petrojarl Production’s new FPSO
Lankhorst Ropes: Supply Lankoforce riser tethers