Ivar Aasen Field Development, Norway
Ivar Aasen Field (formerly Draupne Field), is located in the northern part of the North Sea, west of the Johan Sverdrup Field. The development of the field comprises of three discoveries, namely Ivar Aasen, West Cable and Hanz, with the first two fields to be developed under phase one and Hanz field as part of phase two. The oil fields are located about 175km away from Karmoy.
Ivar Aasen is located in production licence PL001B, Hanz in PL028B and West Cable in PL242, all within Blocks 16/1 and 25/10 in the North Sea at a water depth of about 112m. The three fields are estimated to hold reserves of about 150 million barrels of oil equivalent (boe).
The development of the field is expected to cost NOK 24.7bn ($4.3bn). Det Norske is the operator of the field, while Statoil and Bayerngas Norge hold 50% and 15% shares respectively in the three licences.
Production of oil from phase one is scheduled for 2016, while phase two will start delivering in 2019. Initial production from phase one is estimated at 16,000boe per day, which will increase to 23,000boe per day when both the phases come online. The expected lifetime of the field is 20 years from the time of its commissioning.
Ivar Aasen discovery, geology and development
Hanz was discovered in 1997 by Esso, West Cable was discovered in 1994 and Ivar Aasen was discovered by Det Norske in 2008. Ivar Aasen was discovered by the semi-submersible rig Song Delta.
Oil at Hanz is located in sands belonging to the middle Jurassic and Paleocene age, while oil at West Cable was found in Middle Jurassic sands. Hydrocarbons at Ivar Aasen are located in sandstone of the Middle Jurassic and Upper Triassic formation.
The plan for development and operation (PDO) of Ivar Aasen was submitted in December 2012. The contract for the front-end engineering and design (FEED) study for the development of the offshore oil field was earlier granted in March 2012.
Construction of the topside of the oil field's production, drilling and quarters (PDQ) platform is expected to start in December 2013. The platform is expected to be sailed from Trondheim in March 2016. The steel jacket, on the other hand, will be installed in April 2015. The installation of the topside to the steel jacket is scheduled for June 2016.
The two oil fields under phase one will be developed through a manned platform. Subsea installation of phase two will be connected to the PDQ platform of phase one through a flowline and umbilical system. Offshore facilities will be supervised from a control room which will be constructed onshore.
The field will be jointly developed with Lundin Norway's Edvard Grieg Field (formerly Luno Oilfield), which is expected to start delivering oil in 2015. Oil and gas from Ivar Aasen will be channelled to the Edvard Grieg platform for further processing and export.
Ivar Aasen will further receive lifting gas and electricity from the Edvard Grieg Platform.
Norwegian North Sea oil field platform
The PDQ platform for the oil field will be laid at a water depth of 112m and will comprise of 20 well slots out of which 13 are planned to be used.
The wells will be drilled using a leased jack-up. The platform will be approximately 230m high.
The steel jacket of the platform will measure 138m high and weigh 14,400t. The topside of the platform will weigh 13,700t and will feature single cabins for 70 people and a helideck.
The platform will also be equipped with gas compression, separation, water injection, flare boom and metering facilities. The platform will be electrified right from the start of the production process.
Contracts awarded for Det Norske's / Statoil's project
Wood Group Mustang will provide the engineering and design for the topsides of the PDQ platform. Construction of the facility will be handled by Sembcorp Marine's Subsidiary SMOE. The contract for the construction of the steel jacket has been awarded to Saipem. The FEED contract for the oil field was awarded to Aker Solutions.
The Skrugard Field Development project comprises of two oil fields, namely Skrugard and Havis, located in production license PL 532, about 100km north of the Snøhvit-field in the Barents Sea.
The Brage field lies in the northern part of the North Sea at a depth of 140m. The field is situated in blocks 31/4, 31/7 and 30/6 and primarily contains oil, along with minor quantities of gas.