The Statfjord oil field is a large oil and gas field covering 580 km along the U.K.-Norwegian boundary of the North Sea at a water depth of 145 m, discovered in 1974 by Mobil and since 1987 operated by Equinor .
18-583: It is a trans-median field crossing the Norwegian and UK North Sea Boundary with approximately 15% being in the UK Continental Shelf waters. At peak production it produces over 700,000 barrels (110,000 m) of oil per day. Oil is loaded offshore and taken directly to refineries; gas is transported via the Statpipe pipeline to mainland Norway . The field is located in the northern part of
36-529: A European oil field (outside Russia) : 850,204 barrels (135,171.6 m) ( crude oil plus natural gas liquids ) were produced on January 16, 1987. Statfjord holds one more record - the biggest single contract in Norwegian history for the construction of Statfjord B platform Statoil has planned the "late life" of the field and expects to ultimately recover 68% of Oil in Place . but more than 60% have been produced already, leaving modest oil reserves in
54-506: A connection hub for processing and distribution of natural gas from satellite fields. The field was discovered in 1972. The depth of the sea at location is 120 metres (390 ft). The field was developed with an integrated drilling, production and accommodation facility with a steel jacket including a riser facility in 1999. The gas from the field is transported to Kårstø as well as to St. Fergus in Scotland . After construction of
72-488: A third well discovered a 127 m oil column in the Statfjord Formation with an oil-water contact 2806 m subsea. The Statfjord field has three condeep concrete production platforms , A, B and C Each platform is made up of approximately 250,000 tonnes of concrete with 40,000 tonnes of top-side processing and accommodation facilities. Statfjord holds the record for the highest daily production ever recorded for
90-553: Is 30 inches (760 mm) and capacity is 9.7 billion cubic metre (bcm) of natural gas per year. The first leg of the dry gas pipeline runs from Kårstø to the Draupner S riser platform in the North Sea. The length of this line is 228 kilometres (142 mi). The internal diameter of the pipe is 28 inches (710 mm) and capacity is 7.6 bcm of natural gas per year. The second leg runs for 155 kilometres (96 mi) from
108-622: The Norpipe . On 1 January 2003, the Statpipe was merged into Gassled partnership and Gassco became the operator of the pipeline. The total length of the Statpipe system is 890 kilometres (550 mi). It consists of both rich and dry gas pipelines. The 308-kilometre (191 mi) long rich gas pipeline runs from Statfjord field to the Kårstø gas processing plant. It has branch lines from Snorre and Gulfaks fields. The internal diameter of this pipe
126-808: The Viking Graben , north of the Viking Trough and east of the East Shetland Platform , in the same general area as the Brent oilfield discovered in 1971, and the Cormorant oilfield , Thistle oil field , Dunlin oilfield , Heather oil field and the Hutton oilfield , all discovered by 1973. A regional grid of reflection seismology lines showed the Brent structural trend extended into
144-536: The Brent field, 20 km to the southwest, by normal faulting and a structural saddle. A Conoco 211/24-1 well drilled in 1972-1973 on the U.K. side of the structure turned out to be downdip to the Oil-water contact and it was not until the April 1974 Mobil well 33/12-1, on the Norwegian side, that oil was discovered in 160 m of Brent Formation. A second well "established an oil-water contact at 2584 m subsea" and
162-643: The Heimdal gas center, a new gas pipeline was connected to the existing one from Frigg gas field to St. Fergus. The gas is also transported to Grane oil field for gas injection . The condensate is sent by pipeline to Brae oilfield . Heimdal also gets gas from the Oseberg field center for further transportation through Statpipe system. The Heimdal field is operated by Equinor . Partners are Equinor (39.44%), Centrica Resources (23.79%), Petoro (20%), and TotalFinaElf Exploration Norge AS (16.75%). Originally
180-462: The Heimdal platform in the North Sea to Draupner S. The diameter of this pipe is 36 inches (910 mm) and capacity 11 bcm per year. The Draupner S riser platform ties the Statpipe lines from Heimdal and Kårstø together for onward transmission to Ekofisk. The internal diameter of this section is 36 inches (910 mm), and it runs for 213 kilometres (132 mi) further south, where a 15.8-kilometre (9.8 mi) bypass around Ekofisk complex takes
198-530: The Statpipe directly into Norpipe. In summary the pipelines' details are as follows. The details of the Statpipe riser platforms are as follows. The pipeline is owned by Gassled, operated by Gassco, and the technical service provider is Statoil. Heimdal gas field Heimdal ( Norwegian : Heimdalfeltet ) is an offshore natural gas field in the North Sea located 212 kilometres (132 mi) northwest of Stavanger , Norway. Heimdal serves as
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#1732787382123216-571: The area, forming a "large northeast-trending and northwesterly tilted" (at 6-8 degrees) Fault block , partly eroded on the east flank, with Jurassic and Cretaceous shales trapping any oil in the Middle Jurassic Brent deltaic and Late Triassic - Early Jurassic Statfjord fluvial sandstones originating from the Kimmeridge Clay Formation. The field is on the same structural trend but separated from
234-678: The operator was Norsk Hydro , but after transfer of Hydroäs oil assets to Equinor, Equinor took over operatorship. In summer of 2008, Marathon Oil sold its stake to Centrica for $ 416 million. Total investment has been 19 billion Norwegian krone . The Heimdal reservoir consists of sandstones from Heimdal Formation. The depth is approximately 2,100 metres (6,900 ft). Recoverable reserves stand at 44.6 billion cubic meter. The overall rate of processed gas at Heimdal Gas Center constitutes about 15–20% of Norway's total gas export. Three smaller satellite fields Vale , Byggve and Skirne are also connected to Heimdal field via wells on
252-538: The order of 300 million barrels (48 × 10 ^ m), so the focus will now be placed on extracting the associated natural gas that had been re-injected into the field all over its life. As a mainly natural gas producer, Statfjord is scheduled to remain active until 2032. In December 2007, thousands of tonnes of oil were spilled into the North Sea during the loading of a tanker at the Statfjord oil field. The spill, estimated at 21,750 barrels (approx 3,000 metric tons),
270-563: The sea floor. Heimdal was discovered in 1972 and started production in 1986. As of January 2019, the field had produced 46 billion standard cubic meters of gas and 7 million standard cubic meters of oil. Veslefrikk came on stream in 1989 and produced over 400 million BOE. Phased work to remove Heimdal and Veslefrikk A from the Norwegian North Sea shelf is planned to be completed sometime in 2025. Equinor has chosen Heerema Marine Contractors for removal, dismantling, and recycling of
288-463: The topsides and jackets of the Heimdal riser platform, Heimdal main platform, and Veslefrikk A platform. The three contracts have been awarded on behalf of Gassco as operator of the Heimdal riser platform and on behalf of the partners of the Heimdal and Veslefrikk licenses. The Veslefrikk partners plan to shut down the field permanently in the spring of 2022. Well plugging at the field started earlier this year. A decommissioning plan has been submitted to
306-495: Was developed by Statoil . The development plan was approved by the Norwegian Parliament ( Storting ) on 10 June 1981. The rich gas pipeline from Statfjord became operational on 25 March 1985 and the dry gas pipeline from Kårstø to Ekofisk field came on stream on 15 October 1985. The Draupner S riser platform was installed in 1984 as part of the Statpipe system. In 1998, the Statpipe was connected directly with
324-546: Was the country's second largest ever, according to Norway's oil safety authority. The accident happened in rough weather while the tanker Navion Britannica was loading oil from a storage buoy, according to the operator Equinor. Production had not been affected. Statpipe The Statpipe pipeline is a natural gas system, which links northern North Sea gas fields with Norway 's gas export system. It transports gas from Statfjord , Gullfaks , Heimdal , Veslefrikk , Snorre , Brage and Tordis gas fields. The Statpipe
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