Project Profile
Location: Blocks 6507/7 and 6507/8 on Haltenbanken in the Norwegian North Sea
Water Depth: 350 m/ 1,148 ft
Start-up Year: October 1995
Peak production: 200,000 barrels of oil per year.
Discovery date: 1985
Heidrun is located on Blocks 6507/7 and 6507/8 on Haltenbanken in the Norwegian North Sea in a water depth of 1,148 feet (350 metres). StatoilHydro, which holds a 12.41% interest, operates the oil and gas field; Petoro holds 58.16%; ConocoPhillips holds 24.31%; and Eni Norge holds the remaining 5.12%. Discovered in 1985 by well 6507/7-2, Heidrun was operated by ConocoPhillips during the exploration and development phase, and then StatoilHydro acquired operatership when production commenced. The Heidrun field, located 112 kilometres (70 miles) south of the Arctic Circle, is the northernmost offshore oil and gas field ever developed.
The field\'s reservoir consists of sandstones in the Garn, Ile, Tilje and Åre formations of Early and Middle Jurassic age. The reservoir, at a depth of 7,546 feet (2,300 metres), is heavily faulted, but the Garn and Ile formations have good reservoir quality, while the Tilje and Åre formations are more complex. The recovery strategy for the field is pressure maintenance using water injection and injection of excess gas. When Heidrun was developed, estimates of its recoverable oil averaged 750 million barrels, but this estimate was increased to 1 billion barrels due to improved recovery measures. Heidrun commenced production on October 18, 1995 and peaked at a rate of 200,000 bopd. Continuous efforts are being made to find new methods to increase oil recovery – including drilling of new wells and sidetracks in existing producers -- that will continue beyond 2012. CO2 injection and increase of gas processing capacity are being considered.
StatoilHydro was granted consent to use the Aker Spitsbergen semisubmersible at the Heidrun field in the Norwegian Sea. StatoilHydro was granted consent to use the Deepsea Bergen semisub for production drilling on the Heidrun field. StatoilHydro awarded Aker Solutions an engineering, procurement, construction and installation contract worth US$59 million (NOK 390 million) to facilitate increased gas capacity production at Heidrun\'s production pipeline. FMC Technologies has been awarded a contract from StatoilHydro for the manufacture and supply of additional subsea equipment for its Heidrun North project.
The Dvalin field, formerly named Zidane, will be developed as a subsea tieback to the adjacent Heidrun platform in the Norwegian Sea. Gas from the field will be transported via Heidrun through the Polarled pipeline to the Nyhavna processing plant before being sent to the European market. (September, 2016)
Operators:
Statoil Hydro: Operator with 12.41% interest
Petoro: 58.16% interest
ConocoPhillips: 24.31% interest
Eni Norge: 5.12% interest
Contractors:
Aker Solutions: Semi sub rig contract, EPC contract and well services, and supply equipment related to production risers
Baker Hughes: Provide integrated drilling services
CHC Helikopter Service: Helicopter contracts
Deepsea Drilling: Semi sub rig contract
FMC Technologies: Supply of additional subsea equipment
Reinertsen: Installation of a new compressor and oil and water pumps
Samsung Heavy Industries: Construction contract
EMAS AMC: Awarded a transport and floater installation contract worth US$126 million for two floating storage units (FSU), including an option for a third, from Statoil for the Heidrun and Mariner fields
OSM Offshore: Contract to operate the floating storage unit at its Heidrun field in the Norwegian North Sea
DeepOcean AS (subsidiary of DeepOcean Group Holding BV): Riser installation contract for the Kristin and Heidrun platforms by Statoil using new vessel “Edda Freya”. The offshore work includes the installation of risers as well as dynamic umbilical and cable. Additional support will be provided by a light construction vessel from DeepOcean’s fleet for the offshore campaign. The offshore work, scheduled for the third quarter of 2016, includes the preparation of subsea infrastructure and installation of a dynamic control umbilical, a direct electrical heating (DEH) cable and optional change–out of a production riser on Kristin semi-submersible platform. A water injection riser will be installed on the Heidrun Tension Leg Platform.
Aibel: Contract for work related to planned water injection from the Heidrun platform to the Maria Field.
Jotron: Contract to upgrade the PA&GA System at Statoil’s Heidrun Platform. Jotron will support and maintain the system for the next 20 years.
REINERTSEN AS: Maintenance and modification contractor for Heidrun offshore platform and will also do the installation of the new Heidrun PA&GA upgrade.
Beerenberg Corp AS and Prezioso Linjebygg AS: Long-term contracts for insulation, scaffolding and surface treatment services. The two new contract will replace the company’s existing contracts regarding NCS services. (January, 2016)
Aker Solutions: Production system encompassing a manifold, four subsea trees and a 15-km long umbilical that connects Dvalin natural gas development to the adjacent Heidrun platform. (September, 2016)
Sub contractors:
Wärtsilä: Supplying inert gas systems for the new FSU for Samsung