The Cod oil gas and condensate field was a gas and associated natural gas liquids (NGL) production field in the Norwegian sector of the central North Sea. Production of oil and gas started in 1977, peak gas and NGL was achieved in 1980. Production ceased in 1998 and the field installation was dismantled in 2013.
The field The characteristics of the Cod field reservoir were as follows. +Properties of Cod reservoirFieldCodBlock7/11aReservoirPaleocene sandReservoir depth9,700 feetAPI gravity49°Oil Gas ratio (OGR)70 barrels per million standard cubic feet at 210 °FPressure5,565 psiDiscovery June 1968Recoverable reserves20 million barrels oil condensate; 250 billion cubic feet gas
Owner and operator The field was owned and operated by ConocoPhillips Skandinavia AS.
Infrastructure The Cod field was developed through an offshore installation. +Cod installationNameCodCoordinates57.069553°N 2.434722°EBlock7/11Water depth, metres72.5BridgeTo flare towerInstalledMay 1975FunctionDrilling, production, accommodationProduction startDecember 1977TypeFixed steelSubstructure weight, tonnes5,094Topsides weight, tonnes5,167Number of wells9Legs8Piles8FlareTripod tower bridge link StatusDismantledExport, liquids and gas46.9 mile, 16-inch, 2-phase pipeline to Ekofisk Design contractorKvaernerJacket fabricationUIE St. WandrilleDeck fabricationUIE St. WandrilleAccommodation52
Production The design production capacity of Cod was 17,400 bopd (barrels of oil per day) and 117 mmscfd (million standard cubic feet per day) of gas. Initial separation was at 500 psia (88.3 bar). There was a single 3-phase separator with provision for 350 bpd of produce water. The produced gas was dried in a glycol contactor. Condensate was dried in coalescing filters. Dehydrated oil and gas streams were combined and sent to Ekofisk in a single 2-phase pipeline.
Cod also received gas from the Ulla field which passed directly to the export pipeline.
Production from the Cod field was by natural depletion. The oil, natural gas liquids (NGL) and gas production profile of the Cod field is as shown.
Cod production profile YearOil (million standard m3 oil equivalentNGL (MSm3OE)Gas (MSm3OE)19770.00156300.00422419780.06770700.1376719790.2853360.0349610.48198219800.4650080.1068340.84333819810.3423740.0886030.6912919820.32240.1047710.75783119830.2832570.1254240.73034519840.191310.0867640.52871819850.1534510.0831590.45468319860.1258050.0680820.40484219870.0814130.0488380.28076219880.1001180.0676280.35365119890.0709580.0460210.25518319900.0571710.0348960.19444119910.0513210.0252960.17298319920.0489110.0225250.17140819930.0455360.0213680.15718519940.0462970.0211270.15525719950.04690.0223740.16372219960.0417180.0194230.1477319970.0327720.0168490.11714419980.0178060.0110880.074871 Cod ceased production in 1998 and the installation was removed from the field in 2013.###nor
See also Ekofisk oil field Edda oil and gas field Albuskjell oil and gas field Eldfisk oil and gas field Odin gas field Embla oil and gas field Tor oil field
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