Project Profile
Value: US$733 million
Location: Block 34/7 of the Tampen area in North Sea, Norway
Reserves: 33 million barrels
Start-up Year: 1997
The Vigdis oil and gas field is situated in block 34/7 of the Tampen area in North Sea, Norway. Situated at a water depth of 280m, the field comprises two other discoveries including Vigdis East and Borg North-West. First production from Vigdis was achieved in 1997. The field is expected to continue producing until 2020. Production from the Borg North-West (or Vigdis extension) and Vigdis East discoveries commenced in 2003 and 2004 respectively. Vigdis was originally licensed to Saga Petroleum. Norsk Hydro became the operator following its acquisition of Saga in 1999. Statoil became the operator in January 2003.
Vigdis northeast is a subsea development located 1.6 kilometres from the existing subsea installation on the Vigdis field. The development will include a template with four wells – three producers and one water injector. Vigdis northeast will be tied back to the Snorre A field, which is located approximately seven kilometres away, via the existing infrastructure. Oil and gas will be transported in a pipeline to the existing Vigdis B template and then piped to Snorre A. Reserves are estimated at around 33 million barrels of oil equivalent.
The Vigdis field was developed using four subsea templates for the main Vigdis field structure, the Borg North-West field and the Vigdis East field. A total of 12 wells, including four injection wells, were drilled to develop the fields. The subsea equipment is tied back to the Snorre A tension leg platform at the Snorre oil field, which is located 7km away. The Borg North-West and the Vigdis East fields were developed in two phases under the Vigdis extension project. The extension enabled recovery of an additional 50 million barrels of oil. Phase I of the extension included installation of two seabed templates and two satellite structures on the Borg North-West field. Three production and three injection wells were drilled during this phase. Phase II required an investment of $180m. A third template was installed and one production and one water injection well were drilled on the Vigdis East field during this phase. The template featuring four well slots commenced production in April 2008.
Production and export
Oil is recovered by applying partial pressure on the reservoir through water injection. It is processed at the Snorre A platform and transported to the Gullfaks A platform for storage and export. Gas recovered at the main Vigdis field is injected into the Snorre field reservoir. Gas recovered from the Borg North-West and Vigdis East fields is sent to Snorre A and Statfjord A platforms for processing. The processed gas is transported by the Statpipe / Norpipe system to different markets.
Contracts
Statoil has undertaken an upgrade programme called Tordis Vigdis controls modification (TVCM) project for the Tordis and Vigdis fields. In June 2009, GE Oil & Gas was awarded a US$70m contract to supply its VetcoGray SemStar5 subsea control module for the fields. Offshore installation of the modules is expected to be carried out between 2010 and 2011. ClampOn was contracted to supply funnels and sensors for the subsea modules of the TVCM project. In December 2010, FMC Technologies won a US$75m contract for supplying subsea equipment for the Vigdis North-East field. The contract includes supply of subsea trees, a manifold and umbilical and other equipment. Deliveries are expected to start in the third quarter of 2011. FMC Technologies supplied subsea equipment for phase II of the Vigdis extension project under a US$25m contract awarded in 2006. The equipment included four subsea trees, a manifold and control system, a subsea control cable and control system. The company also provided system integration, installation and maintenance services. NKT Flexibles supplied two water injection replacement lines, jumpers and flowlines for the Vigdis field and the Vigdis extension project. In 2002, Stolt Offshore was awarded a Nkr535m contract to supply 23km of 6in and 12in flowlines and umbilicals. Theta Norge provided consultancy services for laying of the Vigdis subsea flow lines.
Statoil holds a 41.5% stake as operator of the licence, with partners Petoro (30%), ExxonMobil (16.1%), Idemitsu (9.6%) and RWE Dea (2.8%).
Operators:
Statoil ASA: Operator with 41.5% interest
Petoro AS: 30% interest
ExxonMobil: 16.1% interest
Idemitsu Oil & Gas: 9.6% interest
RWE Dea AG: 2.8% interest
Contractors:
Aker Solutions: EPC - Subsea workover system and well services
ClampOn: Supply funnels and sensors for the subsea modules of the TVCM project
Dolphin Drilling: Bideford Dolphin rig to be used for production drilling from 2014 to 2017
FMC Technologies: Supplying subsea equipment including subsea trees, a manifold and umbilical as well as supply of subsea equipment for phase II of the Vigdis extension project and provision of system integration, installation and maintenance services
GE Oil & Gas:
- Supply VetcoGray SemStar5 subsea control module for the fields
- September 2015, GE Oil & Gas signed framework agreement with Statoil Petroleum AS to provide subsea operations services for the Company\'s operated fields Tordis, Vigdis, Snorre and Troll, located north west off the coast of Stavanger. GE Oil & Gas will run the services from their Dusavik site, providing subsea operations services, including offshore installation and intervention, equipment repair and maintenance, studies, upgrades and modifications. The frame agreement effective October 1st will ensure efficient cooperation between the two parties, with GE providing highly skilled and experienced personnel to enable safe and efficient execution and to ensure maximum uptime to support Statoil\'s production targets.
Halliburton: Well Services
Island Offshore Group: Implementation of light well intervention
NKT Flexibles: Supply of two water injection replacement lines, jumpers and flowlines for the Vigdis field and the Vigdis extension project
Subsea 7 S.A.: Marine installation works
Stolt Offshore: Supply 23km of 6in and 12in flowlines and umbilicals
Technip: Marine installation work
Theta Norge: Consultancy services for laying of the Vigdis subsea flow lines.
Schlumberger (Norway): Integrated drilling services
Ocean Installer: Contract for riser replacement operations at the Troll C field. Additionally, this includes options for work at the Vigdis field. The work will be executed under the SLMP Marine Installation Contract. The work scope at Troll C includes recovery and installation of the oil export riser and two production risers. This work requires subsea and topside disconnection and removal of existing risers, and subsea tie-in and topside pull-in of new risers. Optional work includes flexible jumper replacement operations at the Vigdis field as well as other subsea operations (December 2015)
Subcontractor:
Grenland Group: Supply an integrated template structure and manifold to FMC Technologies