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2009, Shell UK Ltd, Guillemot, Semi-Sub Rig, DECC Reference Number 2054

• Published by: British Geological Survey (BGS)
• Last updated: 09 April 2026

An oil and gas industry site survey for a semi-sub rig acquired under licence P013 between October and November 2009. The block number traversed was 21/25.

2010, Maersk Oil, Ocean Endeavour Site Survey, Site Survey, DECC Reference Number 2238

• Published by: British Geological Survey (BGS)
• Last updated: 09 April 2026

An oil and gas industry site survey acquired in May 2010. The block number traversed was UKCS 22/25a.

2010, BP Exploration, 2010 Loyal Site Survey, Site Survey, DECC Reference Number 2313

• Published by: British Geological Survey (BGS)
• Last updated: 09 April 2026

An oil and gas industry site survey acquired between November and December 2010. The block number traversed was 204/20.

2011, Tullow Oil Ltd, Ketch, Jack-Up Rig, DECC Reference Number 2570

• Published by: British Geological Survey (BGS)
• Last updated: 09 April 2026

An oil and gas industry site survey for a jack-up rig acquired under licence P453 between July and August 2011. The block number traversed was 44/28b.

2012, Taqa Bratani Ltd, Otter, Semi-Sub Rig, DECC Reference Number 2669

• Published by: British Geological Survey (BGS)
• Last updated: 09 April 2026

An oil and gas industry site survey for a semi-sub rig acquired under licence P226 between March and April 2012. The block number traversed was 210/15a.

2011, Tullow Oil Ltd, Acle, Jack-Up Rig, DECC Reference Number 2406

• Published by: British Geological Survey (BGS)
• Last updated: 09 April 2026

An oil and gas industry site survey for a jack-up rig acquired under licence P1715 between December 2010 and January 2011. The block number traversed was 49/29.

2010, Enquest PLC, Don H, Semi-Sub Rig, DECC Reference Number 2286

• Published by: British Geological Survey (BGS)
• Last updated: 09 April 2026

An oil and gas industry site survey for a semi-sub rig and pipeline route acquired under licence P014 in July 2010. The block number traversed was 211/18.

2009, BG Group, Everest LAC, Semi-Sub Rig, DECC Reference Number 2020

• Published by: British Geological Survey (BGS)
• Last updated: 09 April 2026

An oil and gas industry site survey for a semi-sub rig acquired under licence P066 in July/August 2009. The block numbers traversed were 22/9, 22/10.

2009, BG Group, Everest LAA, Semi-Sub Rig, DECC Reference Number 2022

• Published by: British Geological Survey (BGS)
• Last updated: 09 April 2026

An oil and gas industry site survey for a semi-sub rig acquired under licence P066 in July/August 2009. The block numbers traversed were 22/9, 22/10.

2009, BG Group, Everest FAA, Semi-Sub Rig, DECC Reference Number 2021

• Published by: British Geological Survey (BGS)
• Last updated: 09 April 2026

An oil and gas industry site survey for a semi-sub rig acquired under licence P101 in July/August 2009. The block numbers traversed were 22/9, 22/14.

2010, Sterling Resources Ltd, Cladhan, Semi-Sub Rig, DECC Reference Number 2189

• Published by: British Geological Survey (BGS)
• Last updated: 09 April 2026

An oil and gas industry site survey for a semi-sub rig acquired under licence P1064 in April 2010. The block numbers traversed were 210/29 and 210/30.

2013, Dana Petroleum, Liberator, Semi-Sub Rig, DECC Reference Number 3047

• Published by: British Geological Survey (BGS)
• Last updated: 09 April 2026

An oil and gas industry site survey for a semi-sub rig acquired under licences P1601, P101, P1987 in June 2013. The block numbers traversed were 13/23a, 13/24a, 13/24b, 13/23d-A.

2009, BG Group, Blake FBA, Semi-Sub Rig, DECC Reference Number 2121

• Published by: British Geological Survey (BGS)
• Last updated: 09 April 2026

An oil and gas industry site survey for a jack-up rig acquired under licence P810 in November 2009. The block numbers traversed were 13/24a, 13/24b.

2013, Taqa Bratani Ltd, Darwin, Semi-Sub Rig, DECC Reference Number 2933

• Published by: British Geological Survey (BGS)
• Last updated: 09 April 2026

An oil and gas industry site survey for a semi-sub righ acquired under licences P184, P474, P1634 in May 2013. The block number traversed was 211/27.

2013, Nexen Petroleum UK Ltd, Ravel, Site Survey, DECC Reference Number 3065

• Published by: British Geological Survey (BGS)
• Last updated: 09 April 2026

An oil and gas industry drilling hazard, environmental, semi-sub rig site survey acquired under licence P226 in June 2013. The block numbers traversed were 15/26a, 15/27.

2012, Maersk Oil, Stephenson DHSS Site Survey, Site Survey, DECC Reference Number 2784

• Published by: British Geological Survey (BGS)
• Last updated: 09 April 2026

An oil and gas industry North Sea site survey acquired in June 2012. The block number traversed was 13/26a.

2004, Hess, Melville, Debris Clearance Survey, BGS Reference Number AH04SS0001

• Published by: British Geological Survey (BGS)
• Last updated: 09 April 2026

An oil and gas industry site survey for debris clearance acquired in July 2004. The block number traversed was 210/24.

2012, Caithness Petroleum Ltd, Analogue Site Survey, Site Survey, DECC Reference Number 2678

• Published by: British Geological Survey (BGS)
• Last updated: 09 April 2026

An oil and gas industry analogue site survey acquired in February 2012. The block numbers traversed were 11/24, 11/25.

2011, Maersk Oil, Ockley Site Survey, Drilling Hazard Survey, DECC Reference Number 2488

• Published by: British Geological Survey (BGS)
• Last updated: 09 April 2026

An oil and gas industry drilling hazard site survey acquired in April 2011. The block number traversed was 30/1d.

1998, Hess, Flora Development, Site Survey, BGS Reference Number AH98SS0004

• Published by: British Geological Survey (BGS)
• Last updated: 09 April 2026

An oil and gas industry geotechnical site survey acquired between January and March 1998. The block number traversed was 31/26.