Cleeton gas field and hub

Cleeton gas field

Country| United Kingdom
Region| southern North Sea
Location/blocks| 42/29
Offshore/onshore| Offshore
Coordinates| 54.03337N 0.757814E
Operators| BP, Perenco
Owner| BP, Perenco
Field history
Discovery| April 1983
Start of production| 1988
Production
Estimated gas in place| 280×10 ~~^~~ 9 cu ft (7.9×10 ~~^~~ 9 m3)
Producing formations| Permian sandstone

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.

## 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]

Graphs are unavailable due to technical issues. There is more info on Phabricator and on MediaWiki.org.

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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

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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

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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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* Easington gas terminal
* Arthurian gas fields
* Planets gas fields
* Ravenspurn gas fields
* Easington Catchment Area
* List of oil and gas fields of the North Sea

## 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.