Project Profile
Value: US$1.9 billion
Location: Southwest part of the HaltenBank, Norwegian Sea, block 6406 / 2 and block 6506 / 11
Reserves: 35.4 billion standard cubic metres of gas, 8.5 million tonnes of NGL and 40.4 million standard cubic metres of condensate
Production: 10 million cubic metres of gas a day
Start-up Year: 3 November 2005
Water Depth: 370m
The Kristin field is located in the southwest part of the HaltenBank, in the Norwegian Sea. It straddles block 6406/2 (production licence 199 was awarded in 1993) and block 6506/11 (PL 134B was awarded in 2000). Kristin is a gas and condensate field that came online on 3 November 2005 and has 12 production wells. It currently produces ten million cubic metres of gas a day (figure taken in June 2008). The field is located at a water depth of 370m and its reservoir is located approximately 5,000m below ground. The partners of the Kristin deepwater project include Statoil (55.2%), Petoro (19.5%), Mobil Development Norway (10.8%), Eni Norge (8.2%) and Total E&P Norge (6%).
Kristin was discovered in 1997 and lies about 20km southwest of Åsgard\'s Smørbukk field. It is possible that Kristin could form the centre of other nearby discoveries, such as Ragnfrid, Lavrans and Erlend. Kristin was developed by Statoil with an investment of US$1.9bn, which was approved in 2002 by the Norwegian Government. A total of 12 production wells were developed in the field by four subsea templates. The subsea templates measure 28mx16mx13m and were fabricated by Aker Solutions and installed by Saipem 700. They are tied to the production platform and held by four suction piles. The templates weigh 200t each. Baker Oil Tools provided completion equipment for the subsea development. Six flowlines, each measuring 24 miles, were installed by Coflexip Stena Offshore. These connect the platform with the subsea templates. The flowline equipment was provided by Nexans and Marubeni-Itochu Steel.
Gas reserves
The Kristin field has reserves of 35.4 billion standard cubic metres of gas, 8.5 million tonnes of NGL and 40.4 million standard cubic metres of condensate. The reservoir lies almost 5,000m beneath the seabed. The pressure and temperature in this reservoir – at 900bar and 170°C, respectively – are higher than in any field so far developed off the Norwegian shore. Kristin will be developed through 12 subsea production wells.
Operators:
Statoil: Operator with 55.2% interest
Petoro: 19.5% interest
Mobil Development Norway: 10.8% interest
Eni Norge: 8.2% interest
Total E&P Norge: 6% interest
Kaefer: Insulation, scaffolding and surface treatment (ISO) service contract (December, 2017)
Contractors:
Aker Solutions: Fabrication of the subsea templates measure and well services
Aker Stord: Construction of the processing facilities for gas and condensate
Aker Solutions & GVA (KBR Group): Design of the hull
Aibel: Supplier of maintenance and modification services
Baker Oil Tools: Provided completion equipment for the subsea development
Baker Hughes: Provide integrated drilling services
Coflexip Stena Offshore: Installation of six flowlines, each measuring 24 miles
Nexans & Marubeni-Itochu Steel: Flowline equipment
Samsung Heavy Industries: Construction of the hull
Technip Offshore Norge: Installation of the platform risers
Nexans: Supply of Direct Electrical Heating (DEH) technology. The DEH riser will connect the Kristin and Maria fields in the Norwegian Sea with the Kristin platform, ensuring the constant flow through pipelines. The delivery, worth approximately US$9 million, will replace an existing DEH riser cable from the Kristin platform. The new riser cable will connect the Kristin platform with a subsea connection box, and will contain four cores to enable the operation of one DEH line to the Kristin field and one to the Maria field.
Reinertsen: Contract to prepare Kristin platform, located in the Norwegian Sea, for tie-in with Wintershall’s Maria field. The contract is worth NOK 600 million (US$75.37 million). Maria field will be connected with the producing platform Kristin, Heidrun and Åsgard B via two templates located on the ocean floor. The installation work will take place between 2016 and 2018, with production scheduled to start in 2018.
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.
Saipem: Contract to use Scarabeo 5 rig for permanent plugging of well 6506/11-N-4 H on Kristin field.