[Norway] Skarv

escveritas
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[Norway] Skarv

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DEVELOPMENT

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Skarv is a field in the northern part of the Norwegian Sea, 35 kilometres southwest of the Norne field. The water depth is 350-450 metres. Skarv was discovered in 1998, and the plan for development and operation (PDO) was approved in 2007. Skarv is a joint development of the Skarv, Idun, Ærfugl and Gråsel deposits. The development concept is a production, storage and offloading vessel (FPSO) with five subsea templates. Production started in 2013.

RESERVOIR

Skarv produces gas and oil from Lower and Middle Jurassic sandstone in the Tilje, Ile and Garn Formations. The Garn Formation has good reservoir quality, while the Tilje Formation has relatively poor quality. The reservoirs are divided into several fault segments and lie at a depth of 3,300-3,700 metres.

RECOVERY

The field is produced with pressure support by gas injection and gas lift.

TRANSPORT

The oil is offloaded to shuttle tankers, while the gas is transported to the Kårstø terminal in an 80-kilometre pipeline connected to the Åsgard Transport System (ÅTS).

STATUS

Skarv oil production is declining, and gas injection is important for oil recovery. Gas blowdown has started in 2022 from parts of the reservoir and will continuously be evaluated. Work is ongoing to evaluate the potential of infill wells and prospects in the area.

Development of the Ærfugl field is the first step to making Skarv an important hub for surrounding discoveries. The ambition for the Skarv area is to increase the production significantly until 2040.

The Skarv field is located in the northern part of the Norwegian Sea. The field has been developed with a floating production, storage and offloading vessel (FPSO) and has one of the world’s largest offshore gas processing plants on this type of facility.

Substantial growth ambitions

The start-up for Ærfugl phase 1 in 2020 and phase 2 in 2021 takes Skarv once more up to a plateau production of over 170 thousand barrels per day. In addition, Ærfugl contributes to reducing CO2-emissions per barrel produced from Skarv FPSO by up to 30 per cent from 2022, and extends the lifetime of Skarv.

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Gråsel, a small but profitable discovery, will be put on production in 2021, using efficient use of existing infrastructure. Several other discoveries in the area are being matured with the aim of using available capacity at the FPSO in the upcoming years.
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