The Breagh gas field is a natural gas reservoir and production facility in the UK sector of the southern North Sea. It is about 100 km of east of Teesside and started gas production in 2013.

Breagh gas field
CountryUnited Kingdom
RegionNorth Sea
Location/blocks42/13a and 42/12a
Offshore/onshoreOffshore
Coordinates54°42′21″N 00°26′09″E / 54.70583°N 0.43583°E / 54.70583; 0.43583
OperatorINEOS
OwnerINEOS (70 %) Sterling Resources (30 %)
Field history
DiscoveryJuly 1997
Start of production2013
Production
Estimated gas in place600×10^9 cu ft (17×10^9 m3)
Producing formationsLower Carboniferous Sandstone

The field

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The Breagh field extends over UK offshore Blocks 42/13a and 42/12a. The field was discovered in July 1997 by well 42/13-2.[1] The reservoir is a Lower Carboniferous Sandstone formation and has reserves of 600 billion cubic feet.[1]

The Breagh gas field is jointly owned by INEOS (70%) and Sterling Resources (30%), INEOS operates the infrastructure.[1] RWE Dea was the original 70% owner and operator but this interest was transferred to INEOS in 2015.[1]

Development

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Production from the field is developed in stages. In the first stage gas is produced by wells on the offshore platform Breagh Alpha and then via pipeline to the Teesside Gas Processing Plant at Seal Sands.[2] Later stages will entail development of the eastern part of the field produced back to a new Breagh Bravo platform.[1]

Details of the Breagh A field infrastructure are as shown.[1][2][3][4]

Breagh A installation
Platform name Breagh
Installation type Fixed Steel platform
Coordinates 54°42’21”N 00°26’09”E
Function Integrated minimum facilities wellhead and production
Crew Not permanently attended
Platform installed October 2011
First gas October 2013
Water depth, metres 62
Design and Construction Heeremaa Vlissingen, Netherlands
Jacket weight, tonnes 2,300
Topsides dimensions, metres
Topsides weight, tonnes 1,200
No. of legs 4 (8 piles)
No. of well slots 12
No. of Wells 8
Gas processing capacity 6.4 million cubic metres (225 million cubic feet) per day
Production to Teesside Gas Processing Plant
Pipeline length and diameter 100 km, 20-inch
Pipeline Number PL2768.1 PL2768.2
Methanol import From shore by pipeline
Pipeline length and diameter 100 km, 3-inch
Pipeline Number PL2769.1 PL2769.2

The export pipeline from Breagh runs 100 km to shore at Coatham Sands. From here a 10 km onshore pipeline carries gas to the Teesside Gas Processing Plant (TGPP).[1]

The entry specification for 3rd party gas into the export pipeline is:[5]

Breagh to Teesside pipeline entry specification
Parameter Value
Gross Calorific Value 37.5 - 42.3 MJ/m3
Oxygen 9 ppm max
Carbon Dioxide 2.8% mol max
Hydrogen Sulphide 3 ppm max
Total Sulphur 14.4 ppm max
Wobbe Index 47.5 - 51.2 MJ/m3

In addition to the Breagh offshore facilities a new gas process facility was constructed at Seal Sands, the Teesside Gas Processing Plant which received and treated the gas prior to shipment into the National Transmission System.[1]

Production

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Gas production from the Breagh field was as follows. in million standard cubic feet (MMSCF).[6]

Data for 2021 is for January to October inclusive.

See also

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References

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  1. ^ a b c d e f g h "Breagh gas field, Southern North Sea". Offshore Technology. Archived from the original on 2011-05-15. Retrieved 22 December 2021.
  2. ^ a b "Successful Installation of Breagh Alpha Platform Offshore UK". www.offshore-energy.biz. 24 October 2011. Archived from the original on 2021-12-22. Retrieved 22 December 2021.
  3. ^ "Inventory of Offshore Installations". odims.ospar.org. Archived from the original on 2021-11-25. Retrieved 22 December 2021.
  4. ^ "OGA interactive Maps". ogauthority.maps.arcgis.com. Archived from the original on 2019-01-26. Retrieved 22 December 2021.
  5. ^ "Access to Breagh Infrastructure". www.ineos.com/globalassets. Archived from the original on 2021-12-22. Retrieved 22 December 2021.
  6. ^ "Production data". data-ogauthority.opendata.arcgis.com. Archived from the original on 2021-12-24. Retrieved 23 December 2021.