Cleeton gas field and hub

The Cleeton gas field and hub is a natural gas production, gathering, compression, treatment and transportation facility in the southern North Sea, 54 km east of Flamborough Head, Yorkshire. It has been producing and transmitting gas since 1988.

Cleeton gas field
CountryUnited Kingdom
Regionsouthern North Sea
Location/blocks42/29
Offshore/onshoreOffshore
Coordinates54.03337N 0.757814E
OperatorsBP, Perenco
OwnerBP, Perenco
Field history
DiscoveryApril 1983
Start of production1988
Production
Estimated gas in place280×10^9 cu ft (7.9×10^9 m3)
Producing formationsPermian sandstone

The Cleeton gas field

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The Cleeton gas field, in UK Block 42/29, was discovered in April 1983. Cleeton was one of the 'Villages' gas fields; named after villages lost to the sea along the Holderness coast. These villages include: Cleeton, Dimlington, Hoton, Hyde, Newsham and Ravenspurn.

The reservoir is a Permian Lower Leman Sandstone Formation, estimated to have gas reserves of 280 billion cubic feet.[1] The reservoir was produced from wells drilled from the Cleeton Wellhead tower, CW. From CW gas, and associated condensate, flowed to the bridge-linked main platform, CPQ. Here it was treated in 3-phase separators, gas dehydration, condensate coalescers and produced water treatment plant. As wellhead pressures declined so gas was compressed on the compression platform, CC, installed in 1995.[2][3][4] Treated gas and condensate was sent to Dimlington gas terminal via the 36-inch pipeline. The production profile, in million cubic metres per year (mcm/y), of the Cleeton field was as follows.[5]

The Cleeton field was shut down as unproductive in 1999. The cumulative total of gas produced since 1988 was 10,268 mcm.[5]

Other developments

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In addition to the Cleeton offshore facilities a new gas terminal was built at Dimlington to receive and treat the gas prior to shipment into the National Transmission System.

The Ravenspurn gas field was being developed and from 1989 gas was routed to Cleeton for treatment, if required, and to Dimlington via the 36-inch pipeline.[6]

The Easington Catchment Area project was instigated in the late 1990s. A bridge-linked ECA riser tower (CT) was installed at Cleeton to receive gas from the ECA development. Gas was processed on Cleeton CPQ as required and was transmitted to Dimlington.

The Cleeton field was originally owned and operated by Britoil/BP, Perenco assumed ownership in 2012.[7]

Cleeton platforms

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The Cleeton hub comprised the following bridge-linked platforms:[2][3][4]

The Cleeton hub
Platform name Cleeton Wellhead CW Cleeton CPQ Cleeton Compression CC Cleeton ECA Riser CT
Installation type Fixed steel platform Fixed steel platform Fixed steel platform Fixed steel platform
Coordinates 54.033373N 0.727814E 54.033373N 0.727814E 54.033373N 0.727814E 54.033373N 0.727814E
Function Wellheads Risers, processing and accommodation Compression Risers and processing
Year commissioned 1987 1988 1995 1999
Water depth, metres 50 50 50 50
Substructure weight, tonnes 1,020 3,100 1,140
Topsides weight, tonnes 1,090 6,600 640 714
No. of legs 4 8 4
No. of Wells

Cleeton pipelines

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The following pipelines were connected to the Cleeton hub.[3]

Cleeton pipelines
From To Fluid Diameter, inches Length, km Pipeline Number
Ravenspurn South Cleeton CPQ Gas 16 20.689 PL448
Ravenspurn North Cleeton CPQ Gas 24 25.51 PL669
Cleeton CPQ Dimlington Gas 36 58.14 PL447
Whittle Cleeton CT Gas 12 14.88 PL1928
Neptune Cleeton CT Gas 16 6.91 PL1684
Minerva Cleeton CT Gas 16 13.20 PL1934
Cleeton CT Whittle Hydraulic fluid 145 mm 15.05 PLU1930
Cleeton CT Minerva Hydraulic fluid 146 mm 13.03 PLU1939

See also

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References

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  1. ^ Department of Trade and Industry (1994). The Energy Report. London: HMSO. ISBN 0115153802 (1994). The Energy Report. London: HMSO. p. 38. ISBN 0115153802.{{cite book}}: CS1 maint: numeric names: authors list (link)
  2. ^ a b "Inventory of Offshore Installations". odims.ospar.org. Archived from the original on 2021-11-25. Retrieved 16 December 2021.
  3. ^ a b c "OGA interactive Maps". ogauthority.maps.arcgis.com. Archived from the original on 2019-01-26. Retrieved 16 December 2021.
  4. ^ a b Cleeton Process Flow Diagram, BP (2005)
  5. ^ a b "Oil and Gas UK – Field data". www.gov.uk/guidance. Archived from the original on 2015-10-27. Retrieved 16 December 2021.
  6. ^ "Cleeton gas field". abarrelfull.wikidot.com. Archived from the original on 2014-07-05. Retrieved 16 December 2021.
  7. ^ "Perenco Environmental statement 2019" (PDF). assets.publishing.service.gov.uk. Archived (PDF) from the original on 2020-08-11. Retrieved 16 December 2021.