The Eldfisk oil and gas field is a crude oil and gas producing field in the Norwegian sector of the central North Sea. Production of oil and gas started in 1979 and peak oil and gas production was achieved in 1980. The facilities have been extended and are still operational.
The field The characteristics of the Eldfisk field reservoir are as follows. +Eldfisk field reservoirFieldEldfiskReservoirUpper Cretaceous to Danian ChalkBlock2/7aReservoir depth9,500 feet, 600 feet payAPI gravity33°Gas Oil ratio (GOR)1,525 scf/bbl (standard cubic feet / barrel)Sulphur content0.2%Pressure6,815 psi (46,988 kPa)DiscoveredDecember 1970Recoverable reserves502 million barrels oil; 107 to 3.0 billion cubic feet gas
Owners and operator Currently (2024), the owners of the Eldfisk field and their respective stakes are: CompanyInterestTotalEnergies EP Norge AS39.896 %ConocoPhillips Skandinavia AS35.112 %Vår Energi ASA12.388 %Sval Energi AS7.604 %Petoro AS5 % The field is operated by ConocoPhillips Skandinavia AS.
Infrastructure The Eldfisk field was originally developed through the use of three offshore platforms. +Eldfisk original platformsNameEldfisk ‘A’Eldfisk ‘FTP’Eldfisk ‘B’Coordinates56.376881°N 3.265803°E56.265933°N 3.265803°E56.419331°N 3.218394°EBlock2/72/72/7Water depth, metres7171 71.5BridgeTo ‘FTP’ To ‘A’ and to flare structureNoneInstalledJuly 1975unknownMay 1976FunctionDrilling, production and accommodation; now wellSeparation, dehydration, compressionDrilling, production and accommodationProduction startAugust 1979August 1979December 1979TypeSteel jacketSteel jacketSteel jacketJacket weight, tonnes4,2062,6894,353Total weight, tonnes13,41010,61515,513Number of wells30 (30 slots)None19 (20 slots)Legs12812Piles12812StatusOperationalOperationalOperationalExport, liquidsBridge to FTP24-inch 3.5-mile pipeline to Eldfisk ‘B’24-inch 11-mile pipeline to Ekofisk RExport, gasBridge to FTP30-inch 3.5-mile pipeline to Eldfisk ‘B’30-inch 11-mile pipeline to Ekofisk RDesign contractorBrown and Root, Worley EngineeringBrown and Root, Worley EngineeringBrown and RootJacket fabricationNAPM, VlissingenUIE, St WandrilleNAPM, VlissingenDeck fabricationWelditDragados SpainWelditAccommodation72, replacement 112None96
Field development A water injection facility Eldfisk E was installed in the field in 1999. This facility also supplies water to Ekofisk K. A new integrated facility, Eldfisk S, started operation in 2015. This is connected by bridge to Eldfisk E. This facility replaces several functions of Eldfisk A and Eldfisk FTP. Eldfisk A has been converted into a wellhead platform and Eldfisk FTP is used as bridge-support facility. The Embla oil and gas field, located south of Eldfisk, is tied back to Eldfisk S. +Eldfisk development platformsNameEldfisk ‘E’Eldfisk ‘S’Coordinates56.375086°N 3.265207°E54.37374°N 3.262698°EBlock2/72/7Water depth, metres7272TypeFixed steelFixed steelInstalledSeptember 2000May 2013Jacket weight, tonnes3,21513,000Topsides weight, tonnes6,85715,900BridgeEldfisk FTPEldfisk EFunctionWater injectionProduction
Production The original production capabilities were as follows. ParameterEldfisk ‘A’Eldfisk ‘FTP’Eldfisk ‘B’Production throughput11,300 Nm3/d oil75,500 bopd3.2 mm Nm3/d gas83 mmscfdPeak field production250,000 bopd545 mmcfgdSeparation pressure515 psiaProcessingSeparation, gas dehydration and compressionSeparation, gas dehydration and compression Eldfisk production profile is as follows. +Eldfisk production 1979 to 2023YearOil (million standard m3 oil equivalentNGL (MSm3OE)Gas (MSm3OE)19791.7121710.072680.41255219805.8751620.2953191.49586819814.9332340.280941.51106319824.1146870.2786391.38516119833.7149560.3287431.43974219843.3804470.2955731.38906819853.377520.330311.39368619863.3575740.3057721.44327219873.1449480.2943761.3585719883.821610.5106112.24669519894.2054550.5588681.5665519903.681020.4811531.30991419912.9804520.3286831.98225619922.7848010.2711341.84155219932.4508770.2507341.71150719942.2297950.229391.54857919952.6922350.2916261.99523619962.3340670.2429351.67047119972.3530650.2595371.70303819981.5174070.1687561.06792719991.1641470.1006570.55674320001.2728620.1171580.663820011.995950.1454340.7492820022.3924820.1633740.92620220032.418570.1415760.74209420043.1632720.1845330.88492720053.5108210.1778320.86007520063.0122210.152450.69370820072.6441370.1210080.5338920083.0224560.136460.5624220092.8580150.1173310.48484220102.8739970.1147530.5049920112.893840.1080930.47572720122.6449530.0891780.28357120131.929960.069430.25695520141.9549170.0693330.27545420152.3809540.085520.34068820162.4578430.0829010.32483520172.5325250.0842590.34078720182.4293970.0772860.27670320192.3251860.0748950.24459820202.4847020.1110380.24708220212.6121560.1174120.30234920222.3013370.0909450.22286520232.237260.0830590.20453
See also Ekofisk Edda oil and gas field Cod oil gas and condensate field Albuskjell oil and gas field Odin gas field Embla oil and gas field Tor oil field
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