K7-K12 gas fields

Last updated
K7-K12 gas fields
CountryNetherlands
RegionNorth Sea
Location/blocksK7, K8, K9, K10, K11, K12
Offshore/onshoreOffshore
OperatorNAM, Gaz de France, Pennzoil, Wintershall, Engie E&P Nederland, Neptune Energy
Field history
Discovery1969
Start of production1978
Production
Producing formationsRotliegendes sandstone

The K7-K12 gas fields are significant natural gas producing areas in the Netherlands sector of the North Sea, about 130 km west of Den Helder. These six contiguous fields started producing gas in 1978 and are mostly still operational in 2021.

Contents

The fields

The K7-K12 gas fields are located in the Southern North Sea. They extend over the Netherlands Blocks K7, K8, K9, K10, K11 and K12. The gas reservoirs have the following properties: [1]

K7-K12 field gas reservoir properties
BlockK7K8K9K10K11K12
Producing horizonRotliegendesRotliegendesRotliegendesRotliegendesRotliegendes
Depth, metres3,1503,3002,770

3,080

3,160
Type of gasHigh calorific value (CV)High CVHigh CVHigh CO2
Recoverable reserves, billion cubic feet247720189200
Discovery196919701973 and

1979

19711976
Initial operatorNederlandse Aardolie Maatschappij BV (NAM)Nederlandse Aardolie Maatschappij BV (NAM)Gaz de FrancePennzoilNAMPlacid
Subsequent operatorsNeptune Energy, Engie E&P NederlandWintershallGaz de FranceGaz de France

Development

The K7-K12 reservoirs were developed by a number of offshore installations across the Blocks. [1] [2] [3] [4] [5] [6] [7]

K7-K12 Field Offshore installations
FieldCoordinatesWater depthInstallation designationFunctionTypeLegsWell slotsInstalledProduction startProduction to
K753°34’22”N 03°18’18”E36.1K7-FA1 DrillingWellheadSteel jacket49April 1982 DeckOctober 1982Production platform, bridge linked
K7-FA1 ProductionProcessing, accommodationSteel jacket6NilApril 1982 DeckK8-FA1
53.55142N 3.26727EK7-FD1SatelliteSteel jacket41998
53.50125N 3.37038EK7-FB1SatelliteSteel jacket42003
K853°30’00”N 03°22’13”E31.2K8-FA1Drilling, production, accommodationSteel jacket1012July 1977 DeckMarch 1978K14-FA1
K8-FA1-PAccommodationSteel jacket2001
53°30’55N 03°22’13”E31K8-FA2Drilling,Steel jacket49October 1977September 1979K8-FA1
53°32’32N 03°25’25”E35K8-FA3SatelliteSteel jacket69May 19851985K7
K953.52193N 3.99382E29.6K9ab-ASatelliteSteel jacket1987
53.55295N 3.78426E28.4K9ab-BSatelliteSteel jacket1999
53.65442N 3.87426E38.K9c-ASatelliteSteel jacket1987
K1053.363714N 3.253964E25,

29

K10-BD WellheadWellheadSteel jacket612July 1982 DeckJanuary 1983Production platform, bridge linked
K10-BP ProductionProcessing, accommodationSteel jacket6NilAugust 1982K13-C
53.404257N 3.288094E29K10-CSatelliteSteel jacket46July 1982August 1983K10-B
K1153°26’58N 03°20’34”E29.4K11-FA1Wellhead drillingSteel jacket431980Mar 1980K8-FA1
K1253°28’36N 03°47’19”E29.5K12-AWellheadSteel Jacket46July 1983September 1983L10-A
53°27’33N 03°54’21”E27.4K12-CSatellite wellheadSteel jacket46September 1984October 1984
53.34304N 3.89692E26.5

27.4

K12-BDSatellite wellheadSteel jacket1983
53.34238N 3.8973K12-BPProductionSteel jacket1981
53.460784N 3.905925EK12-CCCompressionSteel jacket1994Bridge link to K12-BP
53.42354N 3.88651E29.5K12-DSatellite wellheadSteel jacket1985
53.35712N 3.98373E26K12-GSatelliteSteel jacket2001
53.25221N 3.31354 E26K12-KWellhead platformSteel jacket20062007
53.4218N 3.825E, 53.34694N 4.9475E?,

26,

46

K12-S1, K12-S2, K12-S3Subsea wellheadsSubsea wellhead–1991, 2002, 2003

The principal pipelines in the fields are: [1]

K7-K12 Fields pipelines
StartEndLength, kmDiameter, inchesFluid
K7-FA1K8-FA19.418Gas
K8-FA1K14-FA130.924Gas
K8-FA2K8-FA13.810Gas
K8-FA3K7912Gas
K10-BK13-C7.420Gas
K10-CK10-B5.210Gas
K10-CK10-B5.22Methanol
K11-FA1K8-FA166Gas
K12AL10A3014Gas
K12AL10A302Methanol
K12CK12A/L10A line sidetap0.410Gas
K12CK12A/L10A line sidetap0.42Methanol
K12BL10A22Gas
K12BL10A22Methanol
K12CK12C4.510Gas
K12CSidetap4.32Methanol

Production

Peak production from the fields was as follows: [1]

K7-K12 Fields Production
FieldProduction million m3/day
K7-FA16
K8-FA19.2
K8-FA26
K8-FA33.5
K11-FA11.1
K12-A2.7
K12-C2.7

Decommissioning

The K10 and K11 installations are now closed and have been decommissioned. [7]

See also

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References

  1. 1 2 3 4 Oilfield Publications Limited (1985). The North Sea Platform Guide. Ledbury: Oilfield Publications Limited. pp. 360–86.
  2. ↑ "Natural gas and oil of the Netherlands 2007" (PDF). Retrieved 17 November 2021.
  3. ↑ "K07 Gas Fields" . Retrieved 17 November 2021.
  4. ↑ "K08 and K11 Gas Fields" . Retrieved 17 November 2021.
  5. ↑ "K12 Gas Fields" . Retrieved 17 November 2021.
  6. ↑ "Platforms Netherlands Continental Shelf" . Retrieved 17 November 2021.
  7. 1 2 "OSPAR Offshore Installations Inventory 2017" . Retrieved 17 November 2021.
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