Operations

In the central North Sea, we are operator of three platforms and infrastructure hubs, and have interests in major fields operated by others.

We are pursuing growth opportunities around our existing infrastructure hubs – Armada, Everest and Lomond. These include identifying nearby exploration prospects, drilling infill wells and attracting third-party business. Tie-backs to these hubs are also possible from across the median line in the Norwegian continental shelf.

We also have interests in the Shearwater Elgin Area Line (SEAL) – which transports gas to the Bacton terminal; and the SEAL Interconnector Link (SILK – linking SEAL to the UK-Continent Interconnector pipeline).

Operated assets

Armada

Armada comprises gas condensate fields, extending more than 31 square kilometres and spanning five exploration blocks.

Process

Entry specification

Produced fluids must be commercially free of odours, materials, sand and solids/fluids that might interfere or cause injury to the Armada facility's proper operation. This includes any material that would affect the merchantable value of Armada products.

Exit specification

To meet the required specifications of the Central Area Transmission System and the Forties Pipeline System.

Primary separation

The Armada platform has a single processing train with initial low-pressure separation.

Gas treatment

A single-stage processing process comprising separation, booster compression, dehydration, export compression and metering.

Oil export capacity

28 000 bbl/d (barrels per day) (one out of two pumps operating)

Gas comp capacity

10.76 mmscmd (million standard cubic feet per day) (at maximum suction pressure)

Gas export capacity

Governed by compression

Gas lift capacity

None

Produced water handling

11 050 bbl/d accessible

Dehydration capacity

Governed by compression

H2S removal capacity

None

Water injection capacity

None

Capacity

 

2014

2015

2016

2017

2018

Oil processing and export

G

G

G

G

G

Gas compression

G

G

G

G

G

Gas export

G

G

G

G

G

Produced water handling

G

G

G

G

G

Key

Green

>25% ullage

Amber

5% to <25% ullage

Red

<5% ullage

Commercial

The Armada co-venturers unanimously support the Infrastructure Code of Practice 2009 as signatories – and expect to apply its provisions to any approach by prospective users.

Commercial summaries

Everest and Lomond

The BG Group-operated Everest and Lomond fields are located in the central North Sea. First production at each field began in 1993. Gas produced from each field is exported via the CATS pipeline to the CATS terminal at Teesside and produced liquids are exported via the Forties Pipeline System to the Kinneil processing plant, Firth of Forth.

Everest – process

* From 2010, the available gas compression capacity is planned to reduce to 130 mmscfd, at approximately 24 barg suction.

** The Everest Liquids System provides a 14-inch pipeline connection from the CATS riser platform to the Forties Pipeline System.

Entry specification

Produced fluids must be commercially free of odours, materials, sand and solids/fluids that might interfere or cause injury to the Everest facility's proper operation. This includes any material that would affect the merchantable value of Everest products.

Exit specification

To meet the required specifications of the Central Area Transmission System and the Forties Pipeline System.

Primary separation

The Everest platform has two parallel processing trains, each with initial high-pressure separation.

Gas treatment

A four-stage processing process is followed by separation, booster compression, dehydration and export compression.

Oil export capacity

15 mbd (million barrels per day) (oil processing and export)

Gas comp capacity

135 mmscfd* (million standard cubic feet per day) (at 26 barg suction)

Gas export capacity

Governed by compression

Gas lift capacity

None

Produced water handling

5 000 bbl/d

Dehydration capacity

Governed by compression

H2S removal capacity

None

Water injection capacity

None

Everest Liquids System **

58 mbd

Lomond – Process

Entry specification

Produced fluids must be commercially free of odours, materials, sand and solids/fluids that might interfere or cause injury to the Lomond facility's proper operation. This includes any material that would affect the merchantable value of Lomond products.

Exit specification

To meet the required specifications of the Central Area Transmission System and the Forties Pipeline System.

Primary separation

The Lomond platform has two parallel processing trains and the Erskine Processing Module. Initial stage separation for both Lomond and Erskine fluids is through high pressure separation.

Gas treatment

Two separate gas trains each consisting of booster compression followed by dehydration and export compression.

Oil export capacity

10 mbd (oil processing and export)

Gas comp capacity

120 mmscfd (at 44 barg suction)

Gas export capacity

Governed by compression

Gas lift capacity

None

Produced water handling

5 000 bbl/d

Dehydration capacity

Governed by compression

H2S removal capacity

None

Water injection capacity

None

Everest – capacity
  • (1) Maximum capacity of 184 mmscfd. Operating regime requires an entry pressure between 22 barg and 44 barg.

 

2014

2015

2016

2017

2018

Oil processing and export

G

G

G

G

G

Gas compression (1)

G

G

G

G

G

Gas export

G

G

G

G

G

Produced water handling

G

G

G

G

G

Everest Liquid System

G

G

G

G

G

Lomond – capacity
  • (1) Planned maximum capacity of 90 mmscfd. Operating regime requires an entry pressure between 13 barg and 24 barg.

 

2014

2015

2016

2017

2018

Oil processing and export

G

G

G

G

G

Gas compression (1)

G

G

G

G

G

Gas export

G

G

G

G

G

Produced water handling

G

G

G

G

G

Key

Green

>25% ullage

Amber

5% to <25% ullage

Red

<5% ullage

Commercial

BG Group is the owner of Everest and Lomond fields, and supports the Infrastructure Code of Practice 2009 as signatories – and expect to apply its provisions to any approach by prospective users.

Commercial summaries

Additional operated assets

  • Jackdaw: The Jackdaw discovery is one of the largest undeveloped gas discoveries in the UK Continental Shelf. Discovered in 2005, the field was appraised between 2007 and 2012. Results from the exploration and appraisal programme are being used to evaluate potential development concepts.

Non-operated assets

Our non-operated assets include:

  • Buzzard: This oil field, operated by Nexen and located in the Outer Moray Firth, came onstream in 2007. The facilities consist of a complex of four bridge-linked platforms, with oil export via the Forties Pipeline System and gas export via the Frigg System. Gross estimated ultimate recoverable resources are approximately 700 mmboe.
  • Elgin and Franklin: These high-pressure, high-temperature (HPHT) gas condensate fields, operated by Total, are located in the Central Graben Area of the central North Sea.
  • Erskine: Gas and liquids produced from the HPHT Erskine field, operated by Chevron, are processed on the Lomond platform, with gas then transported via the CATS pipeline, and liquids via the Forties Pipeline System.
  • J-Block and Jade: The Judy and Joanne (J-Block) gas condensate/oil fields and Jade gas condensate field are located in the central North Sea. Gas processed on the Judy platform is transported through the CATS pipeline and liquids are transported to Teesside through the Norpipe system. The Jasmine development came on stream in the fourther quarter of 2013 and comprises a wellhead platform, with separate bridge-linked accommodation, tied back via a multi-phase pipeline and a new riser platform to the existing Judy production facilities.

Our interests in offshore pipelines comprise:

  • SEAL and SILK pipelines: We have a 7.86% interest in SEAL, the Shell-operated 474-kilometre gas export pipeline to the Bacton terminal. We also have a 15.98% interest in the Total-operated 900-metre SILK pipeline, which provides direct access from SEAL to the UK-Continent Interconnector pipeline, which connects the Bacton terminal to Zeebrugge in Belgium.