Helder, Helm and Hoorn oil fields

Helder, Helm and Hoorn are adjacent oil fields located in the Netherlands sector of the North Sea 40 km west of Den Helder and 80 km north west of Amsterdam.

The fields The Helder, Helm and Hoorn oil fields are located in Block Q of the Netherlands sector of the North Sea. The oil reservoirs are Lower Cretaceous Vieland Sandstone with oils of various properties. The total reserves in the Q Block are estimated to be 53.9 million barrels. The fields were licensed to Unocal Netherlands BV. +Field propertiesProperty HelderHelmHoornReservoir depth1425 m1271 m1483 mOil column40 m87 m102 mDiscoveredApril 1979February 1979September 1980API gravity21°18.3°26°Gas Oil ratio90 scf/bbl150 scf/bbl100 scf/bbl

Development The fields were developed though a number of offshore installations. +Helder, Helm and Hoorn installationsPlatformConfigurationWater depthFunctionTypeLegsWell slotsInstalledProduction startProduction toHelder A WellheadBridge linked26 mWellheadSteel jacket618April 1982September 1982Helder A Production platformHelder A Production26 mProcessing, accommodationSteel jacket4–April and August 1982September 198220-inch 84 km pipeline to AmsterdamHelder BStand alone WellheadTripod Tower PlatformJuly 1986August 1986Helder A Production platformHelm A WellheadBridge linked26 mWellheadSteel jacket49October 1981Helm Production platformHelm A Production26 mProcessing, accommodationSteel jacket4–April and August 1982September 1982Helder–Amsterdam pipelineHoorn WellheadBridge linked27 mWellheadSteel jacket618April 1983July 1983Hoorn Production Platform Hoorn Production27 mProcessing, accommodationSteel jacket4–April and July 1983July 1983Helder A Production platform 3.4 km 10-inch pipeline

Early years production (in 1000 stock tank barrels) from the fields were: +Field productionYearHelderHelmHoorn1982571465–19833071170928391984428712225078

From 1984 Helder A received oil production from the Kotter production platform by 27.4 km 12-inch diameter pipeline.

To increase production, in 1991 Unocal drilled 5 horizontal wells and horizontal laterals from 9 of the existing wells in the Helder field. Prior to this programme the field was producing 4200 bbl/d, when complete the production had increased to 10,900 bbl/d.  

See also

Kotter and Logger oil and gas fields K7-K12 gas fields K13 gas fields L10 gas field L4-L7 gas fields

References