Gorm Field

Gorm is a natural gas and oilfield in the Danish Sector of the North Sea. It was discovered in 1971 and is the largest oilfield exploited by Denmark. The production infrastructure consists of five bridge-linked platforms and is operated by BlueNord. The facilities include two wellhead platforms and several processing platforms. The Rolf and Dagmar fields are satellites to Gorm.

Reservoir The reservoir properties of the Gorm field are as shown. +Properties of Gorm reservoirPropertyValueBlock5504/16Production horizonUpper cretaceous Danian chalkField delineation, km263Reservoir depth, feet6,600 to 7,200Hydrocarbon column, feet500Density °API33.5Gas / oil ratio1789Sulphur content %0.2Porosity %27-35Total reserves oil, million barrels110-600Total reserves gas, billion cubic feet353

Infrastructure

Installations The installations developed for the Gorm field were as follows. The water depth at the site is 39 metres.

+Gorm field installationsPlatformsCoordinatesFunctionTypeLegsSubstructure weight, tTopsides weight, tWell slotsInstalledProduction startProduction toGorm A55.579105N 4.757856EDrilling & wellheadSteel jacket4108011009September 1979May 1981Gorm CGorm B55.578531N 4.757625EDrilling & wellheadSteel jacket410809459December 1979March 1982Gorm CGorm C55.579641N 4.758695EProcessing & accommodation (97 beds)Steel jacket8350010,200–July 1980May 1981Gorm EGorm D55.579041N 4.750050EFlare towerSteel jacket3750220–February 1981–Gorm E (owned by DONG oil pipe A/S)55.580749N 4.759857ERiser and pumpingSteel jacket416343900–April May 1982Gas to Tyra (14 inch pipeline), condensate to onshore (20 inch pipeline)Gorm F55.578398N 4.757050EWell head, processingSteel jacket2000110001991 In 2014 there were 32 oil production wells, one gas injection well, and 14 water injection wells.

Pipelines A number of pipelines transport fluids to and from the Gorm field. The Skjold, Rolf and Dagmar fields are satellites of Gorn +Gorm field pipelinesFromToFluidLength, kmDiameter, inchesNoteSkjold BGorm FOil, gas & water1212Skjold AGorm AOil, gas & water1112RolfGorm EOil, gas & water178DagmarGorm FOil, gas & water98Gorm ERolfGas173Gorm FSkjold AInjection water1212Gorm DSkjold AGas116Gorm ETyra EGas1618Gorm EFredericia shore terminalOil33020Capacity = 270,000 barrels per dayGorm ECALM (see note)Oil12DecommissionedGorm ECALMOil12Decommissioned Note. CALM = Catenary Anchor Leg Mooring; buoys used to load ships with oil before the export pipeline was available.

Production The original design production rate for the process facilities on Gorm C was 60,000 barrels of oil per day (bopd). The design gas injection rate was 84 mmscfd (million standard cubic feet per day). The pumping platform Gorm C had a design throughput of 90,000 bopd.

The production strategy is to maintain reservoir pressure through water injection.

The production data for the Gorm field is shown in the following table. Production and injection numbers are cumulative rates up to 1 January 2014. About of crude oil from the nearby Rolf oil field are processed on the Gorm platforms. +Gorm field productionParameterValueOil production wells32Gas injection wells1Water injection wells14Oil production, million m360.79Gas production, billion Nm315.74Produced water, million m380.35Water injection, million m3137.83Gas injection, billion Nm38.16Oil reserves, million m33.0Gas reserved, billion Nm30.3 In 2014 the annual production was 6.3 million barrels of oil and 3,677 million standard cubic feet of gas (104 million m3 gas).

Incidents An oil leak occurred in the field on 2 March 2011.

Dagmar and Rolf fields The Dagmar and Rolf fields are satellites to the Gorm installations. The characteristics of the fields are as follows. +Dagmar and Rolf fieldsFieldDagmarRolfProspectEast RosaMid RosaReservoirChalk and DolomiteChalkGeological ageDanian, Upper Cretaceous and ZechsteinDanian and Upper CretaceousCoordinates55.576474°N 4.618248°E55.605986°N 4.491481°EBlock5504/155504/14 & 15Reservoir depth1,400 m1,800 mField delineation50 km222 km2ReservesDiscovered19831981

The fields are developed through two offshore installations as shown. +Dagmar and Rolf installationsFieldDagmarRolfProduction start19911986Water depth34 m40 mInstallationFixed steel no helideckFixed steelFunctionWellheads no processingWellheads no processingSubstructure weight tonnes5001,400Topsides weight tonnes5321,900Number of wells23StatusShut in 2006 & 2007Producing (2022) Export, well fluids9 km 8-inch pipeline to Gorm F17 km 8-inch pipeline to Gorm EImport, lift gas-17 km 3-inch pipeline from Gorm E The oil production profile of the Dagmar and Rolf fields (in 1000 cubic metres) is as shown.

+Rolf and Dagmar annual oil production (1000 m3) 1986-2004Year1986198719881989199019911992199319941995199619971998199920002001200220032004Rolf469634396395271293304176100130113969277835151104107Dagmar4753056733352317131084672 +Rolf and Dagmar annual oil production (1000 m3) 2005-2022Year200520062007200820092010201120122013201420152016201720182019202020212022TotalRolf7989103787660178755447584545484876Dagmar001005

Gorm Field

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