Breagh gas field explained

Breagh gas field
Coordinates:54.7058°N 0.4358°W
Country:United Kingdom
Region:North Sea
Locblocks:42/13a and 42/12a
Offonshore:Offshore
Owner:INEOS (70 %) Sterling Resources (30 %)
Operator:INEOS
Discovery:July 1997
Start Production:2013
Est Gas Bft:600
Formations:Lower Carboniferous Sandstone

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.

The field

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

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]

Platform name
Breagh
Installation typeFixed Steel platform
Coordinates54°42’21”N 00°26’09”E
FunctionIntegrated minimum facilities wellhead and production
CrewNot permanently attended
Platform installedOctober 2011
First gasOctober 2013
Water depth, metres62
Design and ConstructionHeeremaa Vlissingen, Netherlands
Jacket weight, tonnes2,300
Topsides dimensions, metres
Topsides weight, tonnes1,200
No. of legs4 (8 piles)
No. of well slots12
No. of Wells8
Gas processing capacity225e6ft3 per day
Production toTeesside Gas Processing Plant
Pipeline length and diameter100 km, 20-inch
Pipeline NumberPL2768.1 PL2768.2
Methanol importFrom shore by pipeline
Pipeline length and diameter100 km, 3-inch
Pipeline NumberPL2769.1 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).

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

Breagh to Teesside pipeline entry specification!Parameter!Value
Gross Calorific Value37.5 - 42.3 MJ/m3
Oxygen9 ppm max
Carbon Dioxide2.8% mol max
Hydrogen Sulphide3 ppm max
Total Sulphur14.4 ppm max
Wobbe Index47.5 - 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

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

Notes and References

  1. News: Breagh gas field, Southern North Sea. live. 22 December 2021. Offshore Technology. https://web.archive.org/web/20110515003500/http://www.offshore-technology.com/projects/breagh-field/ . 2011-05-15 .
  2. Web site: Successful Installation of Breagh Alpha Platform Offshore UK. live. 22 December 2021. www.offshore-energy.biz. 24 October 2011 . https://web.archive.org/web/20211222193824/https://www.offshore-energy.biz/successful-installation-of-breagh-alpha-platform-offshore-uk/ . 2021-12-22 .
  3. Web site: Inventory of Offshore Installations. live. 22 December 2021. odims.ospar.org. https://web.archive.org/web/20211125041801/https://odims.ospar.org/en/maps/map-inventory-of-offshore-installations-2017/ . 2021-11-25 .
  4. Web site: OGA interactive Maps. live. 22 December 2021. ogauthority.maps.arcgis.com. https://web.archive.org/web/20190126213234/https://ogauthority.maps.arcgis.com/apps/webappviewer/index.html?id=adbe5a796f5c41c68fc762ea137a682e . 2019-01-26 .
  5. Web site: Access to Breagh Infrastructure. live. 22 December 2021. www.ineos.com/globalassets. https://web.archive.org/web/20211222193826/https://www.ineos.com/globalassets/ineos-group/businesses/ineos-oil--gas-uk/icops/icop---access-to-breagh-infrastructure-2.docx . 2021-12-22 .
  6. Web site: Production data. live. 23 December 2021. data-ogauthority.opendata.arcgis.com. https://web.archive.org/web/20211224055249/https://data-ogauthority.opendata.arcgis.com/datasets/oga-field-production-points-pprs-wgs84/explore?filters=eyJGSUVMRE5BTUUiOlsiQlJFQUdIIl19&location=56.115850,-0.511550,5.93&showTable=true . 2021-12-24 .