Guidance

Oil & Gas: decommissioning of offshore installations & pipelines

Decommissioning programmes, including dates, locations, installations decommissioned, method of decommissioning and close-out reports where available.

From:
Offshore Petroleum Regulator for Environment and Decommissioning
Published
23 January 2013
Last updated
6 June 2025 — See all updates

Overview

The decommissioning of offshore oil and gas installations and pipelines on the United Kingdom Continental Shelf (UKCS) is controlled through the Petroleum Act 1998.

The responsibility for ensuring that the requirements of the Petroleum Act 1998 are complied with rests with the Offshore Petroleum Regulator for Environment and Decommissioning (OPRED) which sits within the Department for Business, Energy and Industrial Strategy.

Owners of oil and gas installations and pipelines are required to decommission their offshore infrastructure at the end of a field’s economic life and the 1998 Act requires owners to set out the measures to decommission disused installations and/or pipelines in a decommissioning programme.

A decommissioning programme must identify all the items of equipment, infrastructure and materials that have been installed or drilled and describe the decommissioning solution for each.

OPRED aims to be transparent in its consideration of decommissioning programmes. As a result members of the public, other organisations, non-governmental organisations and other government departments or agencies are invited to comment on the proposals set out in a programme.

Details of the current programmes under consideration are noted in the table below.

OPRED provides guidance on the regulatory requirements for decommissioning. Final guidance on the Environmental Considerations for Decommissioning (Section 12) has now been incorporated into the guidance notes Offshore Oil and Gas Decommissioning Guidance Notes November 2018 (PDF, 1.27 MB, 138 pages). Please see Updates to Offshore Oil and Gas Decommissioning Guidance

Financial Assurance Guidance for the Decommissioning of Offshore Oil and Gas Installations and Pipelines. Financial Assurance Guidance (PDF, 278 KB, 17 pages)

The guidance outlines how the government assesses the financial capability of persons with a relevant interest in or considering taking an interest in an offshore oil or gas field. For the purposes of satisfying the Secretary of State that that person will be capable of carrying out a decommissioning programme in relation to that interest.

It explains our financial assurance policy and existing processes setting out the steps taken to assess the financial health of offshore oil and gas companies with an interest or potential interest in a field, outlining how and when we may use the statutory powers set out in the Petroleum Act 1998.

If you have any comments or questions relevant to the guidance, please email us at odu@energysecurity.gov.uk.

Proposed changes to charging a fee in respect of decommissioning offshore (oil and gas) installations and pipelines under the Petroleum Act 1998 as amended by the Energy Act 2008

The aim of this consultation was to formally seek views from stakeholders such as offshore oil and gas operators, companies with an interest in decommissioning offshore oil and gas installations and pipelines, and other interested parties, on the proposal to update the charging regime for activity related to the regulatory functions for the decommissioning of offshore oil and gas installations. Fees consultation document - May 2021 (PDF, 224 KB, 19 pages) Offshore oil and gas cost recovery consultation impact assessment (PDF, 247 KB, 11 pages) Response to consultation document - April 2022 (PDF, 189 KB, 12 pages)

If you have any questions regarding the proposed changes please direct these to odu@energysecurity.gov.uk.

Draft decommissioning programmes under consideration

Decommissioning Programme Operator Main Points of DP Documents
Davy North & Davy East Subsea Installations Perenco UK Limited Wellheads, Xmas Trees, and Protection Structures will be removed to shore for reuse, recycling or disposal Davy North & Davy East Subsea DP (PDF, 1.28 MB, 37 pages) Davy North & Davy East Subsea EA (PDF, 6.58 MB, 109 pages)  
Stella FPF-1, Moorings and Riser Systems Ithaca Energy (UK) Limited Stella FPF-1 Floating Production Facility, mooring systems, risers, and all pipeline structures within the FPF-1 500m safety zone will be recovered to shore for re-use or recycling. Mooring piles will be fully recovered to -3m below seabed. Mooring lines will be cut -1m below the seabed and recovered. Stella FPF-1 DP (PDF, 6.77 MB, 67 pages) Stella FPF-1 Mooring Lines CA (PDF, 1.7 MB, 26 pages)  
Ninian Southern Topsides, Upper Jacket and Associated Riser Sections CNR International (U.K.) Limited Full removal of Topsides. The Upper Jacket and Riser Sections will be cut between 77m and 87m below LAT. The Topsides, Upper Jacket and associated Risers will be returned to shore for re-use or recycling. Ninian Southern Topsides, Upper Jacket and Associated Risers (PDF, 6.78 MB, 67 pages)  
Cladhan Subsea Facilities Taqa Bratani Limited Subsea installations, surface laid pipelines and umbilicals to be recovered to shore for re-use or recycling. Buried pipelines to be left in situ. Protection/stabilisation features will be recovered to shore. Cladhan DP (PDF, 1.32 MB, 45 pages) Tern Subsea EA (PDF, 6.79 MB, 196 pages) Tern Subsea CA (PDF, 11.8 MB, 255 pages)  
Hudson Subsea Facilities Taqa Bratani Limited Subsea installations, surface laid pipelines and umbilicals to be recovered to shore for re-use or recycling. Buried pipelines to be left in situ. Protection/stabilisation features will be recovered to shore. Hudson DP (PDF, 1.81 MB, 60 pages) Tern Subsea EA (PDF, 6.79 MB, 196 pages) Tern Subsea CA (PDF, 11.8 MB, 255 pages)  
Kestrel and Falcon Subsea Facilities Taqa Bratani Limited Subsea installations, surface laid pipelines and umbilicals to be recovered to shore for re-use or recycling. Buried pipelines to be left in situ. Protection/stabilisation features will be recovered to shore. Kestrel_Falcon DP (PDF, 1.41 MB, 52 pages) Tern Subsea EA (PDF, 6.79 MB, 196 pages) Tern Subsea CA (PDF, 11.8 MB, 255 pages)  
Nelson Derrick Decommissioning Programme Enterprise Oil Limited Full removal of Nelson Derrick Nelson Derrick DP (PDF, 1.94 MB, 32 pages)  
Gannet A Mast Decommissioning Programme Shell U.K. Limited Full removal of Gannet A Mast Gannet A Mast DP (PDF, 2.21 MB, 33 pages)  
Amethyst Jackets and Risers Perenco UK Limited Jackets and risers to be removed for onshore disposal and recycling Amethyst Jackets and Risers DP (PDF, 1.32 MB, 43 pages) Amethyst Jacket s and Risers EA (PDF, 5.81 MB, 113 pages)  
Galahad Installation Perenco Gas (UK) Limited Topside, Monopod Structure and Drilling Template to be removed. Galahad DP (PDF, 1.35 MB, 40 pages) Galahad EA (PDF, 3.34 MB, 71 pages)  
Alba Northern Platform Topsides Ithaca Oil and Gas Limited Topsides will be removed and recovered to shore for reuse, recycling or disposal. Alba Topside DP & EA (PDF, 4.12 MB, 38 pages)  
Alba Floating Storage Unit, Mooring(s) and Riser Systems Ithaca Oil and Gas Limited Floating Storage Unit, Mooring(s) and Riser Systems to be removed. Alba FSU DP & EA (PDF, 2.02 MB, 37 pages) Alba FSU CA (PDF, 1.78 MB, 27 pages)  
Tern Upper Jacket TAQA Bratani Limited The Tern Upper Jacket and pipeline risers will be cut to a depth of approximately 132m below lowest astronomical tide and recovered to shore for recycling or disposal. Tern Upper Jacket - DP (PDF, 3.98 MB, 50 pages) Tern Upper Jacket - EA (PDF, 9.17 MB, 99 pages)  
North Cormorant Upper Jacket TAQA Bratani Limited The North Cormorant Upper Jacket and pipeline risers will be cut to a depth of approximately 116m below lowest astronomical tide and recovered to shore for recycling or disposal. North Cormorant Upper Jacket - DP (PDF, 3.52 MB, 48 pages) North Cormorant Upper Jacket - EA (PDF, 8.05 MB, 102 pages)  
Thistle PL & SALM Base DP EnQuest Heather Limited Remove upper riser, remove umbilical from inside riser caisson, remove surface laid pipelines, remove stabilisation features and remove the SALM base Thistle PL & SALM Base DP (PDF, 6.29 MB, 50 pages) Thistle & Don Combined CA (PDF, 9.13 MB, 124 pages) Thistle & Don Combined EA (PDF, 7.43 MB, 152 pages)  
Gannet Wells Shell U.K. Limited Full removal of GB01S1 and GF01S1 XTs and wellheads Gannet Wells GB01S1 and GF01S1 DP (PDF, 761 KB, 20 pages)  
Pierce WI Wells Enterprise Oil Limited Full removal of A7z, A13Y, B4 wellheads and A8Z, B3, B4A XTs and wellheads. Pierce WI Wells DP (PDF, 1.03 MB, 20 pages)  
Trees Decommissioning Programmes (Birch, Larch & Sycamore) Spirit Energy North Sea Oil Limited Full removal of all surface laid pipelines,  exposed stabilisation features and Birch and Larch Manifolds and Sycamore wellhead. Trenched and/or buried pipelines, pipelines in open trenches and stabilisation features within trenches and below seabed will be left in situ. Trees DP (PDF, 2.63 MB, 63 pages) Trees EA (PDF, 8.33 MB, 103 pages) Trees CA (PDF, 2.77 MB, 50 pages)  
Gryphon Alpha FPSO and Riser Disconnection Decommissioning Programmes TotalEnergies E&P North Sea UK Limited Full removal of the FPSO, flexible risers, dynamic umbilical’s and associated MWA’s (buoyant elements only), mooring lines and anchors. Gryphon Alpha FPSO DP (PDF, 1.28 MB, 42 pages)  
Calder, Dalton & Millom Installations and Pipelines Chrysaor Resources (Irish Sea) Limited Platforms, subsea installations, surface laid pipelines and umbilicals to be recovered to shore for re-use or recycling. Buried pipelines and Calder trunkline to be left in situ. Protection/stabilisation features will be recovered to shore. EIS DP (PDF, 6.96 MB, 78 pages) EIS CA (PDF, 11.7 MB, 115 pages) EIS EA (PDF, 7.53 MB, 157 pages)  
Thistle Upper Jacket EnQuest Heather Limited The upper jacket and pipeline risers will be cut between 65 m and 75 m below LAT and recovered to shore. Thistle Upper Jacket DP (PDF, 3.53 MB, 46 pages)  
Beauly Repsol Sinopec Resources UK Limited The wellhead and WHPS will be recovered to shore. The trenched and buried pipelines and umbilicals will be decommissioned in situ. The exposed sections will be either trenched and buried or covered with rock. All surface laid spools/jumpers will be recovered to shore. Beauly DP (PDF, 4.89 MB, 40 pages) Beauly & Burghley CA (PDF, 11.5 MB, 73 pages) Beauly & Burghley EA (PDF, 12.6 MB, 97 pages)  
Burghley Repsol Sinopec Resources UK Limited The valve skid, wellhead and WHPS will be recovered to shore. The trenched and buried pipelines and umbilicals will be decommissioned in situ. The exposed sections will be either trenched and buied or covered with rock. All surface laid spools/jumpers will be recovered to shore. Burghley DP (PDF, 5.16 MB, 42 pages) Beauly & Burghley CA (PDF, 11.5 MB, 73 pages) Beauly & Burghley EA (PDF, 12.6 MB, 97 pages)  
Dunlin Alpha Fairfield Betula Limited Decommissioning in situ of Dunlin Alpha concrete gravity based structure and storage cells. Dunlin Alpha Decommissioning Programme (PDF, 6.5 MB, 77 pages) Dunlin Alpha Decommissioning Comparative Assessment Report (PDF, 3.66 MB, 133 pages) Dunlin Alpha Decommissioning Environmental Appraisal (PDF, 6.58 MB, 176 pages)  
Brae Alpha, Brae Bravo, Central Brae, West Brae and Sedgwick Marathon Oil UK LLC Removal of Brae Alpha and Brae Bravo jackets to the top of the footings. Removal of Central Brae, West Brae and Sedgwick subsea installations. Pipelines to be decommissioned in a variety of ways including removal, trenching and leave in situ. Brae Alpha, Brae Bravo, Central Brae, West Brae and Sedgwick Decommissioning Programmes (PDF, 15.3 MB, 120 pages) Brae A etc, Environmental Statement – Main Report (PDF, 14.6 MB, 80 pages) Brae A etc. Environmental Statement - Technical Appendices (PDF, 13.3 MB, 96 pages) Brae A Substructure Comparative Assessment (PDF, 1.7 MB, 30 pages) Brae B Substructure Comparative Assessment (PDF, 1.59 MB, 30 pages) Brae Area Subsea Assets Comparative Assessment (PDF, 6.84 MB, 43 pages)  
Brent Shell U.K. Limited Decommissioning in situ of Brent Bravo, Charlie and Delta concrete gravity based structures. Brent Decommissioning Programme (PDF, 12 MB, 322 pages) Brent ES (PDF, 12.5 MB, 475 pages) Brent EIA (PDF, 5.05 MB, 429 pages) Brent ES Appendix (PDF, 2.52 MB, 45 pages) A suite of detailed Technical Documents which support the Decommissioning Programmes documents are available on the Shell Website  
Atlantic and Cromarty BG Global Energy Limited and Hess Limited Manifold and WHPS to be removed for recycling/disposal. Partial removal of pipelines and remaining section of buried/trenched pipelines to remain in situ. Atlantic & Cromarty Decommissioning Programmes (PDF, 1.76 MB, 50 pages) Atlantic & Cromarty Stakeholder Report (PDF, 1.11 MB, 32 pages) Atlantic & Cromarty Environmental Impact Assessment (PDF, 4.5 MB, 109 pages) Atlantic & Cromarty Comparative Assessment (PDF, 2.06 MB, 110 pages)  

Approved decommissioning programmes

Decommissioning Programme and Approval Date Operator at approval Operator following licence / company change Revision Details and Approval Date Close out report and Date Accepted
Seven Seas WHPS DP (PDF, 1.59 MB, 31 pages) June 2025 Spirit Energy Resources Limited -           -           -            
Don Pipelines in Thistle 500m Safety Zone DP (PDF, 4.09 MB, 45 pages) Don Environmental Appraisal (PDF, 19.5 MB, 152 pages) Don Comparative Assessment (PDF, 8.88 MB, 123 pages) May 2025 Britoil Limited -           -           -            
Wingate DP (PDF, 6.27 MB, 59 pages) Wingate EA (PDF, 28.9 MB, 107 pages) Wingate CA (PDF, 4.17 MB, 42 pages) Wingate Pipeline Survey (PDF, 1.33 MB, 10 pages) May 2025 Wintershall Noordzee B.V. -           -           -            
LBA DP (MS Word Document, 6.49 MB) LBA CA (MS Word Document, 4.97 MB) LBA EA (MS Word Document, 18.1 MB) May 2025 Eni UK Limited -           -           -            
Kilmar DP (PDF, 5.35 MB, 54 pages) Kilmar CA (PDF, 5.2 MB, 43 pages) Kilmar EA (PDF, 8.66 MB, 110 pages) May 2025 Energean UK Ltd -           1. Change of parties to the approved Programmes June 2025           -           
Garrow DP. (PDF, 6.64 MB, 53 pages) Garrow CA. (PDF, 3.35 MB, 36 pages) Garrow EA. (PDF, 8.07 MB, 105 pages) April 2025 Energean UK Ltd -           1. Change of parties to the approved Programmes May 2025         -            
Eider DP (PDF, 5.29 MB, 52 pages) Eider EA (PDF, 8.17 MB, 99 pages) March 2025 TAQA Bratani Limited -           -           -            
Solan DP (PDF, 8.36 MB, 87 pages) Solan CA (PDF, 6.19 MB, 65 pages) Solan EA (PDF, 6.97 MB, 133 pages) March 2025 Premier Oil UK Limited -           -           -            
Otter Hatches DP (PDF, 2.07 MB, 38 pages) January 2025 TAQA Bratani Limited -           -           -            
Guinevere Pipelines DP (PDF, 3.72 MB, 47 pages) Guinevere Pipelines EA (PDF, 4.3 MB, 103 pages) Guinevere Pipelines CA (PDF, 2.71 MB, 63 pages) October 2024 Perenco Gas (UK) Limited -           -           -            
Durango DP (PDF, 1.35 MB, 38 pages) Durango EA (PDF, 3.77 MB, 82 pages) September 2024 Perenco North Sea Limited -           -           -            
East Brae Upper Jacket (PDF, 1.96 MB, 50 pages) July 2024 TAQA Bratani Limited -           1. Change of parties to the approved Programmes October 2024 -            
Knarr Gas Pipeline (KGP) Final DP (PDF, 2.49 MB, 56 pages) Knarr Gas Pipeline (KGP) Final CA (PDF, 1.83 MB, 48 pages) Knarr Gas Pipeline (KGP) Final EA (PDF, 3.12 MB, 74 pages) May 2024 Gassco AS -           -           -            
Rochelle WHPS and Jumper DPs (PDF, 2.87 MB, 41 pages) May 2024 CNOOC Petroleum Europe Limited -           -           -            
Leman 27H + 27J Topsides DP (PDF, 3.36 MB, 80 pages) April 2024 Perenco UK Limited -           -           -            
Trees Protection Cages (Birch, Larch and Sycamore) DP (PDF, 2.59 MB, 38 pages) February 2024 Spirit Energy North Sea Oil Limited -           -           -            
Leman F & G DP (PDF, 9.92 MB, 86 pages) Leman F & G CA (PDF, 9.5 MB, 63 pages) Leman F & G EA (PDF, 15.1 MB, 165 pages) January 2024 Shell U.K. Limited -           -           -            
Helvellyn CA (PDF, 9.84 MB, 46 pages) Helvellyn EA (PDF, 7.37 MB, 101 pages) Helvellyn DP (PDF, 4.75 MB, 44 pages) January 2024 Waldorf Petroleum Resources Limited -           -           -            
Western Isles Subsea Final DP (PDF, 9.34 MB, 75 pages) Western Isles Subsea EA Final (PDF, 7.1 MB, 141 pages) Western Isles Subsea CA Final (PDF, 5.49 MB, 74 pages) October 2023 Dana Petroleum (E&P) Limited -           1. Change of parties to the approved Programme September 2024  -            
Devenick (PDF, 2.24 MB, 54 pages) Devenick CA (PDF, 2.02 MB, 58 pages) Devenick EA (PDF, 6.14 MB, 127 pages) October 2023 Taqa Bratani Limited -           -           -            
Western Isles FPSO DP (PDF, 5.78 MB, 65 pages) September 2023 Dana Petroleum (E&P) Limited -           1. Change of parties to the approved Programme September 2024    -            
Heather Pipelines DP (PDF, 4.22 MB, 56 pages) Heather Pipelines CA (PDF, 5.35 MB, 72 pages) Heather Pipelines EA (PDF, 6.78 MB, 117 pages) September 2023 EnQuest Heather Limited -           -           -            
Brent PLU6294 DP (PDF, 1.08 MB, 37 pages) September 2023 Shell U.K. Limited -           -           -            
Chestnut Phase 2 DP (PDF, 5.6 MB, 57 pages) Chestnut Phase 2 EA (PDF, 7.97 MB, 104 pages) Chestnut Phase 2 CA (PDF, 4.42 MB, 67 pages) June 2023 Spirit Energy North Sea Oil Limited -           -           -            
Heather Upper Jacket DP (PDF, 3.24 MB, 41 pages) March 2023 EnQuest Heather Limited -           -           -            
Saltire A Topsides and Saltire Area Subsea Infrastructure DPs (PDF, 7.37 MB, 69 pages) Saltire EA (PDF, 7.09 MB, 109 pages) Saltire CA (PDF, 4.61 MB, 111 pages) December 2022 Repsol Sinopec Resources UK Limited -           -           -            
Causeway & Fionn DP (PDF, 4.56 MB, 64 pages) Causeway & Fionn EA (PDF, 6.78 MB, 94 pages) Causeway & Fionn CA (PDF, 2.03 MB, 41 pages) December 2022 Ithaca Energy (UK) Limited -           -           -            
Johnston DP (PDF, 2.18 MB, 43 pages) Johnston EA (PDF, 5.25 MB, 121 pages) Johnston CA (PDF, 1.64 MB, 62 pages) December 2022 Premier Oil E&P UK EU Limited -           -           -            
Duart DP (PDF, 11.2 MB, 55 pages) Tartan Subsea EA (PDF, 36.4 MB, 137 pages) Tartan Subsea CA (PDF, 5.5 MB, 135 pages) November 2022 Repsol Sinopec Resources UK Limited -           -           -            
Tartan N Terrace (TNT) & Tartan Satellite (TS) Subsea DPs (PDF, 4.07 MB, 72 pages) Tartan Subsea EA (PDF, 36.4 MB, 137 pages) Tartan Subsea CA (PDF, 5.5 MB, 135 pages) November 2022 Repsol Sinopec Resources UK Limited -           -           -            
Tartan Topsides DP (PDF, 8.28 MB, 46 pages) Tartan Subsea EA (PDF, 36.4 MB, 137 pages) November 2022 Repsol Sinopec Resources UK Limited -           -           -            
Lancaster Field Floating Production Storage and Offloading Vessel (FPSO) Decommissioning Programme (PDF, 2.51 MB, 37 pages) November 2022 Hurricane Energy PLC -           -           -            
Hewett Area Subsea Installations DP (PDF, 4.45 MB, 54 pages) Hewett Area Subsea Installations EA (PDF, 14.8 MB, 150 pages) November 2022 Eni UK Limited -           1. Include mattresses and grout bags into the DP  February 2025 -            
Scoter and Merganser DP (PDF, 4.63 MB, 92 pages) Scoter and Merganser CA (PDF, 1.94 MB, 47 pages) Scoter and Merganser EA (PDF, 6.4 MB, 130 pages) September 2022 Shell UK Limited -           -           -            
Sean DP (PDF, 5.05 MB, 64 pages) Sean CA (PDF, 2.8 MB, 110 pages) Sean EA (PDF, 9.44 MB, 171 pages) August 2022 ONE-Dyas UK Limited -           -           -            
Caister CDP1b (PDF, 5.96 MB, 56 pages) CMS Area EA (PDF, 10.4 MB, 171 pages) CMS Area CA (PDF, 13.5 MB, 145 pages) July 2022 Chrysaor Production (U.K.) Limited -           -           -            
Caister-Murdoch System CDP2 (PDF, 15.7 MB, 131 pages) CMS Area EA (PDF, 10.4 MB, 171 pages) CMS Area CA (PDF, 13.5 MB, 145 pages) July 2022 Chrysaor Production (U.K.) Limited -           -           -            
Murdoch CDP3 (PDF, 8.53 MB, 83 pages) CMS Area EA (PDF, 10.4 MB, 171 pages) CMS Area CA (PDF, 13.5 MB, 145 pages) July 2022 Chrysaor Production (U.K.) Limited -           -           -            
Brae Bravo Upper Jacket Decommissioning Programme (PDF, 1.76 MB, 41 pages) June 2022 TAQA Bratani Limited -           -           -            
LOGGS Saturn Satellites LDP2 (PDF, 20 MB, 90 pages) LOGGS LDP2 - LDP5 Comparative Assessment (PDF, 3.21 MB, 203 pages) LOGGS LDP2 - LDP5 EA (PDF, 7.5 MB, 181 pages) June 2022 Chrysaor Production (U.K.) Limited -           -           -            
Foinaven FPSO Offstation DP (PDF, 3.76 MB, 60 pages) May 2022 Britoil Limited -           -           -            
LOGGS V-Fields LDP4 (PDF, 20.8 MB, 83 pages) LOGGS LDP2 - LDP5 Comparative Assessment (PDF, 3.21 MB, 203 pages) LOGGS LDP2 - LDP5 EA (PDF, 7.5 MB, 181 pages) April 2022 Chrysaor Production (U.K.) Limited -           -           -                
Hummingbird Spirit FPSO Sail away and Chestnut Riser Disconnection (PDF, 2.96 MB, 47 pages) March 2022 Spirit Energy North Sea Oil Limited -           -           -                 
Victoria DP (PDF, 2.54 MB, 42 pages) Victoria CA (PDF, 1.81 MB, 48 pages) Victoria EA (PDF, 18.4 MB, 158 pages) April 2022 NEO Energy (SNS) Limited -           -           -            
Wenlock DP (PDF, 4.72 MB, 51 pages) Wenlock CA (PDF, 3.84 MB, 44 pages) Wenlock EA (PDF, 6.74 MB, 119 pages) February 2022 Alpha Petroleum Resources Limited Energean UK Ltd -           -            
Cormorant Alpha Topsides DP (PDF, 3.91 MB, 81 pages) Cormorant Alpha Topsides EA (PDF, 8.21 MB, 117 pages) February 2022 TAQA Bratani Limited -           -           -             
Caledonia Decommissioning Programme (PDF, 3.1 MB, 50 pages) Caledonia Comparative Assessment (PDF, 2.04 MB, 64 pages) Caledonia Environmental Assessment (PDF, 5.56 MB, 113 pages) February 2022 Premier Oil UK Limited -           -           -            
Thistle Topsides Decommissioning Programme (PDF, 3.11 MB, 38 pages) December 2021 EnQuest Heather Limited -           -           -            
Indefatigable 18A Topsides Decommissioning Programme (PDF, 1.29 MB, 50 pages) December 2021 Perenco UK Limited -           -           -            
Banff and Kyle Decommissioning Programmes (PDF, 3.23 MB, 71 pages) Banff and Kyle Environmental Appraisal (PDF, 7.07 MB, 114 pages) Banff and Kyle Comparative Assessment (PDF, 2.75 MB, 106 pages) November 2021 CNR International (U.K.) Limited -           -           -            
Ensign installation DP (PDF, 2.52 MB, 37 pages) Ensign Pipelines DP (PDF, 1.99 MB, 42 pages) Ensign CA (PDF, 1.67 MB, 48 pages) Ensign EA (PDF, 9.45 MB, 134 pages) August 2021 Spirit Energy North Sea Limited -           -           -            
Conrie, Don SW, W Don and Ythan Decommissioning Programmes (PDF, 7.29 MB, 88 pages) Don SW and W Don Comparative Assessment (PDF, 5.33 MB, 76 pages) Conrie, Don SW, W Don and Ythan Environmental Appraisal (PDF, 8.07 MB, 132 pages) August 2021 EnQuest Heather Limited -           -           -            
Fulmar and Auk North Topsides, Subsea Facilities and Pipelines Decommissioning Programme (PDF, 3.83 MB, 78 pages) Fulmar and Auk North Subsea Infrastructure and Pipelines Comparative Assessment (PDF, 4.63 MB, 144 pages) Fulmar & Auk North Environmental Appraisal (PDF, 5.17 MB, 114 pages) July 2021 Repsol Sinopec Resources UK Limited -           -           -            
Heather Topsides Decommissioning Programme (PDF, 4.07 MB, 43 pages) July 2021 EnQuest Heather Limited -           -           -            
Kingfisher Decommissioning Programme (PDF, 2.95 MB, 76 pages) Kingfisher CA (PDF, 2.19 MB, 51 pages) Kingfisher EA (PDF, 3.48 MB, 119 pages) June 2021 Shell U.K. Limited -           1. Change of parties to the approved Programme August 2021 2. Schedule Extension to 31/12/2027 and further change to parties to the approved Programme February 2025 -            
Gaupe Decommissioning Programme (PDF, 1.86 MB, 47 pages) Gaupe CA (PDF, 1.32 MB, 51 pages) Gaupe EA (PDF, 5.77 MB, 113 pages) May 2021 A/S Norske Shell -           1. Change of parties to the approved decommissioning programme. 2. Change of decommissioning solution for PLU 2784 and PLU 2785 from leave in situ to full removal due to insufficient depth of cover. December 2024 -            
PL301 Heimdal to Brae Pipeline Decommissioning Programme (PDF, 7.71 MB, 53 pages) PL301 Heimdal to Brae Pipeline Comparative Assessment (PDF, 6.77 MB, 55 pages) PL301 Heimdal to Brae Environmental Appraisal (PDF, 9.64 MB, 114 pages) April 2021 Equinor Energy AS -           -           -            
Hunter & Rita Decommissioning Programme (PDF, 2.1 MB, 44 pages) Hunter & Rita CA (PDF, 1.99 MB, 79 pages) Hunter & Rita EA (PDF, 4.96 MB, 131 pages) April 2021 Premier Oil E&P UK Limited -           -           -            
LOGGS PR, LOGGS PC, LOGGS PP, LOGGS PA, North Valiant PD, & Associated Pipelines – LDP5 (PDF, 12.2 MB, 99 pages) Chrysaor Production (U.K.) Limited April 2021 -           -           -            
Windermere Decommissioning Programme (PDF, 1.95 MB, 41 pages) Windermere CA (PDF, 802 KB, 34 pages) Windermere ES (PDF, 7.86 MB, 231 pages) March 2021 INEOS UK SNS Limited - 1. Schedule Extension to 31/12/2025 & Change to decom solution for covering pipeline ends to use rock rather than backfill January 2024 -            
Hewett Decommissioning Programme (PDF, 5.76 MB, 69 pages) Hewett Environmental Appraisal (PDF, 16.9 MB, 134 pages) March 2021 ENI Hewett Limited -           -              
Buchan & Hannay Decommissioning Programme (PDF, 3.33 MB, 57 pages) Buchan & Hannay CA (PDF, 3.83 MB, 91 pages) Buchan & Hannay EA (PDF, 8.29 MB, 115 pages) March 2021 Repsol Sinopec Resources UK Limited -           -           -            
Huntington Decommissioning Programme (PDF, 2.52 MB, 41 pages) Huntington CA (PDF, 1.86 MB, 62 pages) Huntington EA (PDF, 5.01 MB, 127 pages) March 2021 Premier Oil E&P UK Limited -           -           -            
Northern Producer FPF and Don SW + W Don riser disconnection (PDF, 4.89 MB, 58 pages) March 2021 Submitted jointly by Qualimar Shipping Company Limited and EnQuest Heather Limited -           -           Northern Producer Close Out Report (PDF, 5.79 MB, 45 pages) July2024  
Balmoral Decommissioning Programme (PDF, 4.27 MB, 65 pages) Balmoral Area CA (PDF, 2.56 MB, 116 pages) Balmoral Area EA (PDF, 8.03 MB, 196 pages) February 2021 Premier Oil E&P UK Limited -           -           -            
Brenda Decommissioning Programme (PDF, 1.76 MB, 47 pages) February 2021 Premier Oil E&P UK Limited -           -           -            
Glamis Decommissioning Programme (PDF, 2.53 MB, 46 pages) February 2021 Premier Oil E&P UK Limited -           -           -            
Nicol Decommissioning Programme (PDF, 1.68 MB, 45 pages) February 2021 Premier Oil E&P UK Limited -           -           -            
Stirling Decommissioning Programme (PDF, 3.13 MB, 44 pages) February 2021 Premier Oil E&P UK Limited -           -           -            
Topaz Decommissioning Programme (PDF, 2.21 MB, 31 pages) Topaz CA (PDF, 504 KB, 15 pages) Topaz EA (PDF, 1.22 MB, 37 pages) February 2021 INEOS UK SNS Limited - 1. Schedule Extension to 31/12/2025 & Change to decom solution for covering pipeline ends to use rock rather than backfill January 2024 -            
North Cormorant DP (PDF, 2.56 MB, 50 pages) North Cormorant EA (PDF, 7.26 MB, 93 pages) November 2020 TAQA Bratani Limited -           -           -            
Tern Topsides - Decommissioning Programme (PDF, 2.84 MB, 52 pages) Tern Topsides EA (PDF, 7.03 MB, 91 pages) November 2020 TAQA Bratani Limited -           -           -            
Fulmar & Auk North Preparation Work Scopes Decommissioning Programme (PDF, 1.53 MB, 35 pages) November 2020 Repsol Sinopec North Sea Limited -           -           -            
East Brae Topsides and Braemar Decommissioning Programmes (PDF, 3.88 MB, 62 pages) September 2020 RockRose UKCS8 LLC TAQA Bratani Limited -           -            
Brent Alpha Jacket (PDF, 2.82 MB, 101 pages) July 2020 Shell U.K. Limited -           -           -            
Amethyst A1D, A2D, B1D & C1D Topsides (PDF, 2.42 MB, 43 pages) July 2020 Perenco UK Limited -           -           -            
Anglia Decommissioning Programme (PDF, 2.18 MB, 61 pages) Anglia CA (PDF, 3.74 MB, 49 pages) Anglia EA (PDF, 5.83 MB, 120 pages) June 2020 Ithaca Energy UK Limited -           -           -            
Brynhild Pipelines (PDF, 1.98 MB, 50 pages) June 2020 Lundin Energy Norway AS Aker BP ASA - Brynhild Pipelines Close Out Report (PDF, 2.86 MB, 25 pages) March 2024  
Cormorant Alpha Derrick Structure Removal (PDF, 4.28 MB, 57 pages) June 2020 TAQA Bratani Limited -           -           Cormorant Alpha Derrick Structure Removal Close Out Report (PDF, 5.17 MB, 38 pages) December 2023  
Cavendish (PDF, 2.4 MB, 40 pages) June 2020 INEOS UK SNS Limited - 1. Schedule Extension to 31/12/2024 August 2022 2. Schedule Extension to 31/12/2025 & Change to decom solution for covering pipeline ends to use rock rather than backfill January 2024 -            
Banff and Kyle FPSO and FSO Float Off (PDF, 3.45 MB, 39 pages) May 2020 CNR International (U.K.) Limited -           -           Banff and Kyle FPSO and FSO Float Off Interim Close Out Report (PDF, 2.31 MB, 36 pages) May 2021  
Eider Topsides DP (PDF, 2.38 MB, 50 pages) May 2020 TAQA Bratani Limited -           -           -            
Ganymede, Europa, Callisto and NW Bell – LDP3 (PDF, 4.85 MB, 101 pages) May 2020 Chrysaor Production (U.K.) Limited -           -           -            
Ganymede ZD Topsides - LDP3b (PDF, 2.31 MB, 46 pages) April 2020 Chrysaor Production (U.K.) Limited -           -           -            
Huntington FPSO (Voyageur Spirit) (PDF, 1.19 MB, 21 pages) April 2020 Premier Oil E&P UK Limited -           -           -            
Caister - CDP1a (PDF, 2.93 MB, 49 pages) March 2020 Chrysaor Production (U.K.) Limited -           -           -            
Alma & Galia DPs (PDF, 4.34 MB, 61 pages) March 2020 EnQuest Heather Limited -           -           -            
Brent Field Pipelines (PDF, 4.05 MB, 130 pages) March 2020 Shell U.K. Limited -           -           -              
Thistle COS Tanks (PDF, 3.34 MB, 59 pages) January 2020 EnQuest Heather Limited -           -           -            
Banff SAL Buoy (PDF, 996 KB, 20 pages) November 2019 CNR International (U.K.) Limited. Decommissioning Programmes submitted by Teekay Petrojarl Floating Production UK Ltd. -           -             Banff SAL Buoy Interim Close Out Report (PDF, 1.22 MB, 12 pages) May 2021  
MacCulloch Decommissioning Programmes (PDF, 1.36 MB, 40 pages) November 2019 Chrysaor Production (U.K.) Limited -           -           -            
Goldeneye (PDF, 3.41 MB, 53 pages) November 2019 Shell U.K. Limited -           -           Goldeneye Close out Report (PDF, 1.95 MB, 35 pages) July 2024   
Brae Alpha West Drilling Rig (PDF, 2.2 MB, 24 pages) September 2019 RockRose Energy UKCS8 LLC TAQA Bratani Limited 1. Schedule Extension to 31/12/2023 January 2022 Brae Alpha West Drilling Rig Close Out Report (PDF, 1.68 MB, 24 pages) April 2024  
South Morecambe DP3/DP4 (PDF, 2.72 MB, 57 pages) September 2019 Spirit Energy Production UK Limited -           -           -            
Pickerill A&B Installations (PDF, 1.79 MB, 54 pages) September 2019 Perenco Gas (UK) Limited - 1. Schedule Extension to 31/12/2024 February 2022 2. Schedule Extension to 31/12/2027 March 2025 -                
Minke Decommissioning Programmes (PDF, 8.56 MB, 59 pages) September 2019 Neptune E&P UKCS Limited - 1. Schedule Extension to 31/12/2024 July 2021 2. Schedule Extension to 31/12/2025 April 2025 -             
Ketch (PDF, 2.65 MB, 60 pages) August 2019 DNO North Sea (ROGB) Limited - 1. Allow for installation of UKNG Viking Cable & Change in decom solution of pipelines to full removal June 2022 2. Include pipeline and fibre optic crossings into DP & Change in decom solution for pipelines remaining under rock berms & additional rock dump on pipeline ends September 2022 3. To alter the S29Holders November 2023 4. Change in decom solution of pipeline sections to leave in situ May 2024 -             
Schooner (PDF, 4.97 MB, 63 pages) August 2019 DNO North Sea (ROGB) Limited - 1. Allow for installation of UKNG Viking Cable June 2022 2. To alter the S29Holders November 2023 3. Addition of WHPS to DP and its removal & Change in decom solution of exposed pipeline sections to full removal May 2024 -            
Juliet (PDF, 6.16 MB, 47 pages) August 2019 Neptune E&P UKCS Limited - 1. Schedule Extension to 31/12/2024 July 2021 2. Schedule Extension to 31/12/2025 April 2025 -             
Dunlin Alpha to Cormorant Alpha Pipeline - PL5 (PDF, 4.36 MB, 73 pages) July 2019 Fairfield Betula Limited -           -           PL5 Close Out Report (PDF, 4.74 MB, 27 pages) February 2021  
Ninian Northern Platform (PDF, 2.34 MB, 70 pages) CNR International (U.K.) Limited June 2019 -           -           -            
Nevis N11 WHPS (PDF, 1.66 MB, 26 pages) June 2019 Apache Beryl I Limited -           -           Nevis N11 WHPS Close out report (PDF, 1.86 MB, 25 pages) September 2022  
Dunlin Alpha Topsides (PDF, 4.97 MB, 44 pages) May 2019 Fairfield Betula Limited -           -           Dunlin Alpha Topsides Close Out Report (PDF, 1.63 MB, 36 pages) September 2024  
Hewett (PDF, 1.5 MB, 21 pages) April 2019 Eni Hewett Limited ENI UK Limited - Hewett Vent Stack Close Out Report (PDF, 595 KB, 11 pages) September 2021  
Pickerill A & B (PDF, 1.26 MB, 21 pages) March 2019 Perenco Gas (UK) Limited -           -           -            
Curlew B, C and D (PDF, 2.4 MB, 61 pages) March 2019 Shell U.K. Limited -           1. Schedule Extension to 31/12/2026 August 2023 -            
Viking Platforms, Vixen and associated Pipelines (VDP2) (PDF, 33.3 MB, 84 pages) January 2019 ConocoPhillips (U.K.) Limited -           -           -            
Victor (VDP3) (PDF, 21.1 MB, 55 pages) January 2019 ConocoPhillips (U.K.) Limited -           -           -            
Tyne South Installations (PDF, 1.83 MB, 42 pages) January 2019 Perenco UK Limited -           -           -            
Guinevere Installation (PDF, 2.05 MB, 43 pages) January 2019 Perenco UK Limited -           -           -            
Beatrice Decommissioning Programmes (PDF, 4.45 MB, 88 pages) January 2019 Repsol Sinopec Resources UK Limited -           1. Terminate agreement for Beatrice AD, AP, B & C reuse July 2019 -            
Bains Decommissioning Programmes (PDF, 2.57 MB, 36 pages) January 2019 Spirit Energy Production UK Limited -           -           -            
Jacky (PDF, 2.34 MB, 52 pages) October 2018 Ithaca Energy (UK) Limited -           1. Schedule Extension to 31/12/2024 and change to decom solution August 2023 2. Schedule Extension to 31/12/2030. December 2024 -            
Brae Bravo Topsides, Flare Bridge, Flare Tower and Flare Jacket and Substructure (PDF, 4.9 MB, 52 pages) August 2018 Marathon Oil UK LLC TAQA Bratani Limited - Brae Bravo Topsides Close Out Report (PDF, 3.29 MB, 36 pages) January 2024  
Brent Alpha, Bravo and Charlie Topsides (PDF, 3.34 MB, 81 pages) August 2018 Shell U.K. Limited -           -           -            
Stirling A33 WHPS Decommissioning Programme (PDF, 1.13 MB, 27 pages) May 2018 Premier Oil E&P UK Limited -           -           Stirling WHPS Close Out Report (PDF, 2.57 MB, 15 pages) February 2019  
Ann and Alison (PDF, 2.98 MB, 60 pages) April 2018 Spirit Energy North Sea Limited -           -           -            
Saturn (Annabel) (PDF, 2.49 MB, 47 pages) April 2018 Spirit Energy North Sea Limited -           -           -            
Audrey (PDF, 2.87 MB, 58 pages) April 2018 Spirit Energy North Sea Limited -           -           -            
Rev Decommissioning Programme (PDF, 12 MB, 42 pages) April 2018 Repsol Norge AS -           1. Schedule Extension to 31/12/2023 November 2019. 2. Schedule Extension to 31/12/2027 February 2023 -            
Markham ST-1 (PDF, 2.39 MB, 49 pages) February 2018 Centrica Production Nederland B.V. Spirit Energy Nederland B.V. - Markham ST-1 Close Out Report (PDF, 6.19 MB, 68 pages) July 2021  
Osprey (PDF, 3.92 MB, 68 pages) December 2017 Fairfield Fagus Limited -           -           Osprey Close Out Report (PDF, 1.71 MB, 34 pages) January 2021  
Merlin (PDF, 2.97 MB, 56 pages) December 2017 Fairfield Fagus Limited -           -           Merlin Close Out Report (PDF, 1.47 MB, 27 pages) January 2021  
Dunlin Fuel Gas Import (DFGI) and Dunlin Power Import (DPI) (PDF, 3.48 MB, 54 pages) December 2017 Fairfield Fagus Limited -           -           DFGI/DPI Close Out Report (PDF, 2.19 MB, 30 pages) January 2021  
Viking Satellites CD, DD, ED, GD, HD Pipelines (PDF, 6.77 MB, 32 pages) November 2017 ConocoPhillips (U.K.) Limited -           -           -            
LOGGS Satellites Vulcan UR, Viscount VO, Vampire OD - LDP1 (PDF, 17.5 MB, 61 pages) November 2017 ConocoPhillips (U.K.) Limited -           -           -            
Leman BH Decommissioning Programme (PDF, 4.66 MB, 46 pages) April 2017 Shell U.K. Limited -           -           Leman BH Close Out Report (PDF, 1.71 MB, 25 pages) March 2019  
Ettrick and Blackbird (PDF, 2.1 MB, 62 pages) March 2017 Nexen Petroleum U.K Limited -           1. Schedule Extension to 31/12/2023 July 2020 2. Schedule Extension to 31/12/2025 (Ettrick Inst only) December 2022 -            
Ann A4 Decommissioning Programme (PDF, 1.37 MB, 29 pages) February 2017 Centrica North Sea Limited -           -           -            
Janice James & Affleck (PDF, 3.8 MB, 115 pages) September 2016 Maersk Oil UK Limited -           1. Change of parties to the approved Programmes Affleck PLs only December 2021 -            
Athena Decommissioning Programmes (PDF, 3.88 MB, 70 pages) September 2016 Ithaca Energy (UK) Limited -           1. Schedule Extension to 31/12/2023 and change of parties to the approved Programmes January 2021 -            
Viking Platforms (PDF, 3.53 MB, 40 pages) September 2016 ConocoPhillips (U.K.) Limited -           -           -            
Leadon (PDF, 1.71 MB, 53 pages) March 2016 Maersk Oil North Sea UK Limited TotalEnergies E&P UK Limited - Leadon Close Out Report (PDF, 7.78 MB, 31 pages) February 2023  
Harding STL (PDF, 2.61 MB, 73 pages) December 2015 TAQA Bratani Limited -           -           Harding STL Close-Out Report (PDF, 1.62 MB, 26 pages) June 2017  
Thames Area – Horne & Wren (PDF, 1.57 MB, 48 pages) November 2015 Tullow Oil SK Limited -           -           -            
Thames Area – Orwell (PDF, 828 KB, 42 pages) November 2015 Tullow Oil SK Limited -           -           -            
Thames Area – Wissey (PDF, 1.26 MB, 43 pages) November 2015 Tullow Oil SK Limited -           -           -            
Thames Area – Thames Complex (PDF, 15.9 MB, 76 pages) October 2015 Perenco UK Limited - 1. Removal of pipeline from the programme March 2018 2. Schedule Extension to 31/12/2023 March 2019 3. Schedule Extension to 31/12/2024 and Change in decom solution of mats to leave in situ. -            
Thames Area – Gawain (PDF, 3.8 MB, 47 pages) October 2015 Perenco UK Limited - 1. Schedule Extension to 31/12/2022 March 2019 2. Schedule Extension to 31/12/2024 September 2022 -            
Thames Area – Arthur (PDF, 4.41 MB, 46 pages) October 2015 Perenco UK Limited - 1. Schedule Extension to 31/12/2022 March 2019 2. Schedule Extension to 31/12/2024 March 2022 3. Schedule Extension to 31/12/2026 April 2025 -            
Brent - Brent Delta Topside (PDF, 3.55 MB, 72 pages) July 2015 Shell U.K. Limited -           -           Brent Delta Topside Close Out Report (PDF, 4.42 MB, 53 pages) February 2020  
Rose Decommissioning Programmes (PDF, 2.87 MB, 42 pages) May 2015 Centrica Resources Limited -           -           Rose Close Out Report (PDF, 3.31 MB, 36 pages) October 2018  
Stamford (PDF, 2.71 MB, 39 pages) April 2015 Centrica North Sea Gas Limited -           -           Stamford Close Out Report (PDF, 2.66 MB, 36 pages) February 2019  
Murchison (PDF, 2.37 MB, 70 pages) August 2014 CNR -           -           -            
Rubie & Renee (PDF, 2.47 MB, 50 pages) April 2014 Endeavour Energy UK Limited -           1. Schedule Extension to 31/12/2017 June 2016 2. Schedule Extension to 31/12/2018 November 2017 3. Schedule Extension to 31/12/2020 December 2018 Rubie Renee Decommissioning Close Out Report (PDF, 9.98 MB, 66 pages) September 2021  
Miller (PDF, 6.57 MB, 198 pages) December 2013 BP Exploration (Alpha) Limited -           1. Schedule Extension to 31/12/2024 December 2018 -            
Schiehallion & Loyal Phase One (PDF, 1.84 MB, 60 pages) April 2013 Britoil Limited -           -           Schiehallion & Loyal Phase One Close Out Report (PDF, 1010 KB, 22 pages) May 2019  
IVRR - decommissoning programme (PDF, 1.57 MB, 102 pages) February 2013 Hess Limited -           -           IVRR Close Out Report (PDF, 4.74 MB, 35 pages) December 2015  
Camelot (PDF, 488 KB, 39 pages) June 2012 Energy Resource Technology (UK) Limited -           -           Camelot Close out report (PDF, 2.27 MB, 41 pages) August 2013  
Fife, Flora, Fergus, Angus: decommissioning programme (PDF, 8.36 MB, 135 pages) February 2012 Hess Limited -           -           FFFA Close Out Report (PDF, 1.49 MB, 33 pages) December 2014  
Don (PDF, 8 MB, 175 pages) May 2011 Britoil Public Limited Company -           -           -            
Welland DP (PDF, 1.74 MB, 39 pages) September 2010 Perenco UK Limited -           -           Welland Close Out Report (PDF, 7.42 MB, 130 pages) September 2020  
Tristan NW DP (PDF, 4.11 MB, 119 pages) August 2010 Silverstone Energy Limited Bridge Energy UK Limited - Tristan NW close out report (PDF, 2.3 MB, 23 pages) January 2011  
Shelley DP (PDF, 3.23 MB, 83 pages) June 2010 Premier Oil -           -           Shelley close out report (PDF, 4.49 MB, 62 pages) February 2012  
Kittiwake Sal DP (PDF, 4.28 MB, 87 pages) June 2009 Venture North Sea Oil Limited -           -           Kittiwake Sal close out report (PDF, 588 KB, 13 pages) July 2012  
MCP-01 DP (PDF, 7.41 MB, 336 pages) September 2007 Total E&P UK Limited -           -           MCP-01 close out report (PDF, 23.1 MB, 113 pages) March 2013  
Kittiwake Buoy DP (PDF, 3.46 MB, 118 pages) May 2008 Venture North Sea Oil Limited -           1. Change of parties to the approved Programme August 2016 -            
Linnhe (PDF, 2.25 MB, 66 pages) July 2008 Mobil North Sea LLC -           -           Linnhe Close Out Report (PDF, 1000 KB, 22 pages) November 2013  
Indefatigable (Shell) (PDF, 11.6 MB, 224 pages) May 2007 Shell UK Limited -           -           Close Out Report (PDF, 2.47 MB, 64 pages) December 2014  
NW Hutton: decommissioning programme (PDF, 14.9 MB, 320 pages) February 2006 Amoco (U.K.) Exploration Company - now a subsidiary of BP plc -           -           Close Out Report (PDF, 2.52 MB, 32 pages) October 2014  
Ardmore 2005 British American Offshore Limited -           -           -            
Ardmore 2005 Ugland Nordic Shipping AS -           -           -            
Ardmore 2005 Acorn Oil & Gas Limited -           -           -            
Brent Flare DP (PDF, 2.93 MB, 122 pages) 2004 Shell -           -           Brent Flare Close out Report (PDF, 2.7 MB, 31 pages) May 2025  
Beatrice 2004 Talisman Energy (UK) Limited -           -           -            
Forbes and Gordon 2003 BHP Billiton -           -           May 2005  
Frigg DP (PDF, 10 MB, 450 pages) May 2003 Total E&P Norge AS -           -           Frigg close out report (PDF, 3.46 MB, 62 pages) May 2011  
Durwood and Dauntless 2002 Amerada Hess -           -           -            
Hutton 2002 Kerr McGee -           -           July 2004  
Camelot CB 2001 ExxonMobil -           -           -            
Blenheim and Bladon 2000 Talisman -           -           -            
Durwood and Dauntless 2000 Amerada Hess -           -           -            
Maureen and Moira 2000 Phillips -           -           -            
Brent Spar 1998 Shell -           -           -            
Donan 1998 BP -           -           -            
Fulmar SALM 1998 Shell -           -           -            
Emerald 1996 MSR -           -           -            
Frigg FP 1996 Elf Norge TotalFinaElf Norge -           -            
Leman BK 1996 Shell -           -           -            
Staffa 1996 Lasmo -           -           -            
Viking AC, AD, AP & FD 1996 Conoco -           -           -            
Esmond CP & CW 1995 BHP -           -           -            
Gordon BW 1995 BHP -           -           -            
Angus 1993 Amerada Hess -           -           -            
Forbes AW 1993 Hamilton BHP -           -            
Argyll, Duncan and Innes 1992 Hamilton BHP -           -            
Blair 1992 Sun Oil AGIP -           -            
Crawford 1991 Hamilton Oil BHP -           -            
Piper Alpha 1988 Occidental Talisman -           -            

Notification of disused pipelines

During the course of a field’s life, pipelines/sections of pipelines may be taken out of use, e.g. due to corrosion, problems with reservoir pressure, damage to the pipeline, etc. When this happens, under the Petroleum Act 1998 the Secretary of State has the option of immediately calling for a full decommissioning programme. This is not always considered an appropriate option however, and so it has been agreed consideration will be given to handling suitable pipelines, under an informal decommissioning regime, thereby deferring a formal programme until the end of the field’s life.

If a formal decommissioning programme is not immediately deemed suitable, details of the out of use pipeline(s) will be circulated to other government departments for comment. Following this, OPRED will decide one of the following:

  • we are content with the proposals for monitoring and maintaining the out-of-use pipeline
  • we request additional information or further remedial action
  • we request a formal decommissioning programme

The Interim Pipeline Regime is intended to ensure out of use lines do not pose a risk to other users of the sea or the environment and that they are covered by an appropriate surveying and maintenance regime from the point when they are taken out of use until approval of the formal decommissioning programme, which is usually at the end of field life. It should be noted that any interim solution should not prejudice the final decommissioning options for that line, including complete removal. The department expects operators to submit details of out of use pipelines/sections of a pipeline as soon as they are taken out of use.

Operators are reminded that any works that are proposed on any pipelines under the Pipeline Works Authorisation regime, as per their Terms and Conditions of the PWA, must have a legal consent in place before works can commence which includes but is not exclusive to any proposed decommissioning works. Consents are issued by the North Sea Transition Authority (NSTA) and operators are requested to email consents@nstauthority.co.uk on any queries that they may have relating to legal consents. Further guidance can also be found on the NSTA website.

Once the necessary legal consent has been issued by NSTA, Consents & Authorisations Section, Operators are to email a completed IPR1 Form (MS Word Document, 63.7 KB) to odu@energysecurity.gov.uk.

If you are an operator, aware of any out of use pipelines that have not been referred to the department, please submit a completed IPR1 Form at your earliest convenience.

Following confirmation a pipeline has been accepted under the Interim Pipeline Regime, the Offshore Decommissioning Unit will continue to monitor the condition of the pipeline by asking the Operator to confirm the status of the pipeline remains unchanged following future surveys at an agreed frequency. If you are an operator who wishes to request a change to the agreed frequency of surveys following acceptance of a pipeline into the IPR, please submit a completed IPR2 Form (MS Word Document, 53.4 KB) to odu@energysecurity.gov.uk. Please note that a recent survey (done that year) must have been completed before any change of survey frequency will be considered.

Further information

A list of all installations on the UKCS and their current status is available from the OSPAR Website

At the first ministerial meeting of the Commission for the Protection of the Marine Environment of the North East Atlantic (OSPAR) in 1998, a binding decision was agreed that set rules for the disposal of offshore installations at sea. Under the decision the dumping and leaving wholly or partly in place of offshore installations is prohibited. Decision 98/3 recognises it may be difficult to remove the ‘footings’ of large steel jackets weighing more than 10,000 and concrete installations. As a result there are derogations for these categories of installations if the internationally agreed assessment and consultation process shows leaving them in place is justifiable.

OPRED has utilised decommissioning programme templates for derogation and non-derogation projects. These templates include all required content as detailed in Annex C of the guidance notes. There are also templates available which are currently being trialled for more specific and small scale decommissioning activity including rig reactivation and removal of a single Wellhead Protection Structure. Operator’s should discuss all individual cases with OPRED who will advise of the appropriate template.

A Standard Decommissioning Programme Template (Non-Derogation Cases) (PDF, 608 KB, 33 pages) is available - (March 2025).

A Standard Decommissioning Programme Template (Derogation Cases) (PDF, 1.11 MB, 37 pages) is also available (November 2018).

A word version of these templates can also be requested from OPRED. Please email odu@energysecurity.gov.uk for further details.

Cost recovery

OPRED will charge a fee in respect of offshore (oil and gas) installations and pipelines decommissioning programmes under the Petroleum Act 1998. Guidance, including the indicative fee structure, is available in Guidance on charging a fee for offshore (oil and gas) installations and pipelines under the Petroleum Act 1998 (PDF, 308 KB, 9 pages)

Updates to this page

Published 23 January 2013
Last updated 6 June 2025 show all updates

  1. Revision to Approved Programme

  2. A DP has been approved

  3. Decommissioning Programme Approved

  4. A DP has been approved

  5. A revision to a DP date has been added

  6. Approval of DP

  7. Acceptance of Close out Report

  8. DP has been approved

  9. Addition of new DP

  10. Revisions to approved Decommissioning Programmes

  11. Draft DP approved

  12. New approved Decommissioning Programme

  13. Decommissioning Programmes for consultation

  14. Three new DPs have been added to the OPRED website.

  15. A DP Revision approval and Updated non-derogation DP Template

  16. draft decommissioning programme removed

  17. Addition of new draft programmes under consideration and approved decommissioning programme

  18. Revision details added

  19. A new DP is out to consultation.

  20. New draft Decommissioning Programme added

  21. New DPs under consideration added

  22. Addition of new approved DP

  23. Revision details and approval date added

  24. Revision details added

  25. Addition of new draft decommissioning programme

  26. Document names updated for Knarr Gas Pipeline (KGP) and Brent PLU6294

  27. Addition of two draft Decommissioning Programmes and Environmental Appraisals.

  28. Addition of new DP and associated documents

  29. New Decommissioning Programmes added to ODU website

  30. Addition of Approved Decommissioning Programme

  31. Consultation draft DPs added

  32. New Non-Derogation Template added to website

  33. Revision details added

  34. Revision to approved DP

  35. DP has been approved

  36. Approved Close Out Report added

  37. Consultation Draft DP added

  38. New DP added to website

  39. DP out for consultation

  40. Additional information added for LBA DP

  41. Approved Close Out Report added

  42. East Brae UJ DP approved

  43. Acceptance of Close out Report

  44. New Decommissioning Programme added to website for consultation

  45. Solan DP consultation

  46. A new DP is out for consultation

  47. Consultation DP added

  48. Addition of DP revisions to website

  49. Approved Close Out Report added

  50. Approved Decommissioning Programme

  51. Approved DP added

  52. New Decommissioning Programme added to website

  53. A DP has been approved

  54. Change of Operator has occurred in the Wenlock and Garrow Fields

  55. Consultation DP added

  56. Close Out Report added to Website

  57. Approved DP added

  58. Decommissioning Programme for consultation

  59. The Brae Bravo Topsides Close Out Report has been accepted and added to the website.

  60. Acceptance of Close Out Report

  61. Approved Decommissioning Programme

  62. Helvellyn - Waldorf has been moved from "under consideration" to "approved".

  63. Garrow documents added for Public Consultation.

  64. Final draft of Financial Assurance Guidance published

  65. Decommissioning Programme approved

  66. Decommissioning Programme approved

  67. Approved Decommissioning Programme

  68. A DP has been approved

  69. A DP has been approved

  70. Decommissioning Programme for consultation

  71. New DP out to consultation.

  72. ODU email address updated

  73. Decommissioning Programme out to consultation

  74. Consultation DP added

  75. Typo corrected on IPR 1

  76. Addition of new IPR forms for use

  77. Consultation DP added

  78. Consultation DP added

  79. DP approval

  80. Decommissioning Programme for consultation

  81. Decommissioning Programme for consultation

  82. East Brae UJ DP consultation commenced

  83. Consultation decommissioning programmes added

  84. DP approval

  85. Addition of Western Isles FPSO DP in programme under consideration tab

  86. Close Out Report added

  87. link to guidance update page

  88. Consultation DP added

  89. DPs withdrawn as added in error

  90. Consultation DPs added

  91. DP approval

  92. DP approval

  93. DP approved

  94. DPs have now been approved

  95. lancaster FPSO DP approved

  96. DP approval

  97. Consultation draft DP added

  98. Consultation draft DPs added

  99. Decommissioning Programme for consultation

  100. N11 COR added

  101. Notification of an approved DP

  102. DP approval

  103. Approved DPs published

  104. Brae B upper jacket DP approved

  105. Approved DP

  106. approval of foinaven FPSO DP

  107. response to consultation document for proposed changes to fee charging regime in respect of offshore oil and gas installations and pipelines published

  108. DP Approval

  109. Consultation DPs added

  110. Decommissioning programme for consultation

  111. Approval of Decommissioning Programme

  112. New DPs out to consultation

  113. wenlock DP approval re-added appears to have been deleted in error

  114. Consultation DP

  115. Approved DP

  116. Approved DP

  117. DP approval

  118. Draft programme for consultation

  119. DP approval

  120. Consultation DP added

  121. DP approved

  122. Causeway and Fionn DP consultation

  123. DP approval

  124. Decommissioning Programme for consultation

  125. Decommissioning Programmes added for Public Consultation

  126. Acceptance of Close Out Report

  127. DP Consultation

  128. COR accepted

  129. Consultation DP added

  130. ensign DP approved

  131. Consultation DP

  132. markham close out report added

  133. Consultation DP

  134. DP approval

  135. Cost recovery consultation impact assessment added

  136. DP Approval

  137. DP approval

  138. newly approved DP

  139. Decommissioning programme for consultation

  140. Consultation draft DP added

  141. Edited 'Overview' section to publish details of consultation on proposed changes to fee charging regime.

  142. interim CORs added for Banff FPSO and SAL buoy DPS

  143. approval of Gaupe DP

  144. Approval of Decommissioning Programme

  145. DP approved

  146. Adding an approved DP

  147. Consultation DP

  148. DP approved

  149. Approved Decommissioning Programme

  150. Decommissioning Programmes for consultation

  151. DP approved

  152. DP approved

  153. DP approved

  154. COR added

  155. Approved DPs added

  156. Close Out Reports Approved

  157. Adding A Decommissioning Programme which is out to Public Consultation.

  158. Consultation DPs added

  159. Consultation DP added

  160. Consultation DP added

  161. Approval of Decommissioning Programme

  162. Decommissioning Programme Approved

  163. Approval of preparatory works

  164. Consultation DP added

  165. Accepted Close Out Report added

  166. Approval of Decommissioning Programme

  167. Five new DPs out to consultation

  168. A new DP is out to public consultation

  169. draft DP added

  170. Decommissioning Programmes for consultation

  171. Approval of A DP and Derogation

  172. Draft decommissioning programme for consultation

  173. Decommissioning Programme for consultation

  174. document replaced with updated version

  175. Decommissioning Programme Approval

  176. Approved Decommissioning Programme

  177. Consultation DP added

  178. DP has been approved

  179. Decommissioning Programme for consultation

  180. A DP has been added for public consultation

  181. Approval of Decommissioning Programme

  182. Approved DP added

  183. Approval of Decommissioning Programme

  184. approval of Eider topsides DP

  185. A Decommissioning Programme has been approved

  186. consultation DP added

  187. Approval of a DP

  188. Approved DP

  189. Approval of a DP

  190. Decommissioning Programme for consultation

  191. Approved DP

  192. Decommissioning Programme now approved

  193. Consultation DPs

  194. Decommissioning Programme for consultation

  195. CoR added to website

  196. DP approval

  197. Huntington Consultation DP added

  198. New Decommissioning Programmes out to consultation.

  199. New DP out to consultation

  200. New DP out to consultation

  201. Decommissioning Programmes for consultation

  202. Decommissioning Programme for consultation

  203. Decommissioning Programme for consultation

  204. Approved of Banff SAL Buoy DP

  205. Consultation of Cavendish Decommissioning Programme

  206. MacCulloch DP approved

  207. New approved DP

  208. Consultation of Ensign

  209. Approval of Decommissioning Programme

  210. Approval of South Morecambe DP3/DP4 Decommissioning Programmes

  211. Pickerill installations DP approved

  212. Minke DP approved

  213. Banff SAL buoy DP for consultation

  214. Addition of two approved decommissioning programmes

  215. Added the approved Juliet DP to the website

  216. PL5 approved

  217. NNP approved

  218. Decommissioning Programme for consultation

  219. Consultation of MacCulloch Field Decommissioning Programmes

  220. Revised CAs for Brae A, Brae B and East Brae

  221. Approval of Nevis N11 WHPS Decommissioning Programme

  222. Change of email to a generic one rather than a personal email.

  223. Schiehallion & Loyal Phase One Close Out Report Approved

  224. Approval of the Dunlin Alpha Topsides Decommissioning Programme

  225. Update of the content of the DP

  226. Approval of Hewett Vent Stack DP

  227. consultation closed

  228. Consultation DP and supporting documents for PL5

  229. Minke and Juliet consultation DPs published

  230. Addition of Close Out Report

  231. New Approved Programme

  232. New programme for consultation

  233. Publishing approved Curlew DP

  234. Morecambe DPs published for consultation

  235. Added a CoR

  236. Addition of Close Out Report

  237. Approved DPs for VDP2 and VDP3 added

  238. Addition of approved DPs for Tyne South Installations and Guinevere Installation

  239. Addition of approved decommissioning programme

  240. Approval of a Decommissioning Programme

  241. Addition of Brent Delta Close Out Report

  242. Addition of 2 decommissioning programmes for consultation

  243. Update decommissioning templates added

  244. Guidance document was updated and uploaded

  245. Adding Goldeneye DP for consultation.

  246. Jacky Decommissioning Programmes Approved

  247. Approval of Close out Report

  248. Approval of Decommissioning Programme

  249. VDP2 and VDP3 consultation draft Decommissioning Programmes added

  250. Approval of Brent Alpha, Bravo and Charlie Topsides Decommissioning Programme

  251. Offshore Oil and Gas Decommissioning Programme out to consultation

  252. Addition of a new decommissioning programme for consultation

  253. Tyne South and Guinevere Installation Decommissioning Programmes published for consultation

  254. Addition of Curlew DPs, CA and EIA for Public Consultation.

  255. Decommissioning Programme Approved

  256. Updated Offshore decommissioning guidance has been added

  257. Ann & Alison, Saturn (Annabel) and Audrey DPs have been approved

  258. Changed document to final version

  259. A decommissioning programme has been approved

  260. Approved Markham DP

  261. Bains Documents Added

  262. Updated Environmental Guidance on Decommissioning

  263. Jacky DP Consultation

  264. Draft Consultation Decommissioning Programme uploaded

  265. Updated guidance for Offshore Decommissioning on website for feedback

  266. Addition of approved DPs

  267. Approved DPs added

  268. Saturn Annabel, Audrey and LDP1 Programmes for public consultation

  269. DPN form corrected

  270. generic email address added and DPN form updated (with generic email address)

  271. Ann and Alison DP's and associated documents added for public consultation

  272. Fairfield Fagus Limited's Dunlin Fuel Gas Import and Power Import, Merlin and Osprey Decommissioning Documents uploaded

  273. Brae Area DPs and associated documents available for consultation

  274. Harding STL Close Out Report added

  275. Disused Pipeline Notification Form revised - 03 May 17

  276. Leman BH Decommissioning Programme approved

  277. Approval of Ettrick and Blackbird DP

  278. Ninian North Platform documents published for public consultation A4 Programme approved

  279. Brent Decommissioning Programmes published for consultation

  280. IVRR Close Out Report added

  281. Ann A4 Installation Decommissioning Programme added for consultation

  282. Approved Decommissioning Programmes added

  283. Atlantic and Cromarty Draft Decommissioning Programmes Consultation

  284. references of DECC amended to BEIS (including DPN form)

  285. Janice, James & Affleck Fields - Draft programmes under consideration (added)

  286. Markham ST-1 Decommissioning Programmes - (added)

  287. Oil & Gas: Update Notification of Disused Pipelines

  288. Oil & Gas: Update Table of draft decommissioning programmes under consideration.

  289. Leadon Decommissioning Programmes - (added)

  290. Notification of Disused Pipelines form - (updated)

  291. Harding STL approved decommissioning programme - (added)

  292. Thames Area - Horne & Wren, Orwell and Wissey approved decommissioning programmes - (added)

  293. Fife, Flora, Fergus, Angus: decommissioning programme FFFA Close Out Report - (added)

  294. Thames Area – Thames Complex, Gawain & Arthur - Approved decommissioning programmes - (added)

  295. Viking Satellites CD,DD,ED,GD,HD draft decommissioning programmes under consideration - (added)

  296. Oil and Gas: Updated document for Harding STL Decommissioning Programme

  297. Oil and Gas: Updated “Table of approved decommissioning programmes” table.

  298. Leman BH draft decommissioning programme - (added)

  299. Oil and Gas: Addition of Brent field to approved decommissioning programme

  300. Oil and gas: Rose approved decommissioning programme - (added)

  301. Decommissioning - Leadon draft programme, follow up consultation - (added)

  302. Oil and gas: Stamford decommissioning programme - (added)

  303. Oil and gas: Rose Field decommissioning programmes - (added)

  304. Oil and gas: Brent – Brent Delta Topside draft decommissioning programme - (added)

  305. Oil and Gas: Addition of Stamford Field to decommissioning programmes table

  306. Oil and Gas: Updated the disused pipeline notification form

  307. Oil and gas: Decommissioning - Streamlined Decommissioning Programme Template (Derogation Cases) - (added)

  308. Oil and gas: NW Hutton close out report - (added)

  309. Oil and gas: Decommissioning draft prgrams - Thames - (added)

  310. Oil and gas: Indefatigable (Shell) close out report - (added)

  311. Oil and gas: Streamlined Decommissioning Programme Template (Non-Derogation Cases) - (updated)

  312. Oil and gas: Murchison approved decommissioning programme - (added)

  313. Oil and gas: Rubie & Renee - Approved decommissioning programme - (added)

  314. Oil and gas: Decommisiioning Linhe close out report - (added)

  315. Oil and gas: Streamlined Decommissioning Programme Template (Non Derogation Cases) - updated

  316. Oil and gas: Leadon Draft Decommissioning Programme - added

  317. Oil and gas: Miller decommissioning programme - (added)

  318. Oil and gas: Rubie/Renee Draft Decommissioning Programme - (added)

  319. Camelot close out report - added

  320. Added Murchison draft decommissioning programme

  321. Added streamlined decommissioning programme template

  322. Re-created table, added H2's and anchors

  323. First published.

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