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Unknown Obstruction - Chestnut Field
During a recent survey an unknown obstruction was encountered at 57°56.915’N, 001°12.575’E. The vessel’s creeper was snagged on a heavy weight and lost in approximately this position. A 0.1nm exclusion zone around this was maintained during the trawl sweep operations - fishermen are recommended to keep clear.
Fishing vessels operating in the vicinity should do so with caution in the areas noted above.
See detailed map on our bulletin website
Install and tie-in - Alligin Drill Centre West of Shetland
Subsea works at the Alligin Drill Centre (204/20a), West of Shetland. Planned works are described in the Consent to Locate Ref: CL/1487 as issued by OPRED (attached to this Notification) and the Pipeline Works Authorisation PW5143 as issued by the NSTA. Works include installation of Xmas Tree on the recently drilled Water Injection well and subsequent tie-in via jumper installation to existing infrastructure. All works will remain within the 500mz at 204/20a Alligin Subsea Drill Center.
The Schiehallion, Loyal & Alligin subsea fields (West of Shetland) are to be expended with new water injection and production wells over a campaign from 2023 to 2025, with all new wells connecting to existing subsea infrastructure. To date 3 new wells have been installed over 2023/24 with a further 3 wells to be installed in 2025.
As part of this phase of work, a new water injection Christmas Tree (AW12) will be tied into the existing Alligin well (AW11) flowbase, via a 6" water injection jumper, along with new controls supply jumpers (hydraulic and electrical) connected into an existing Alligin controls distribution assembly.
This work scope also includes the movement of previously wet stored jumpers from a defined wet store location into the work site. This wet store location and all other activities covered within these Notifications are located fully within the subsea 500m zone surrounding the Alligin Drill Centre – locations as per attached.
The Normand Subsea MSV will carry out the subsea activities, scheduled to take ~6 weeks.
See detailed map on our bulletin website
Environmental Sampling - Nelson platform and Nelson South Subsea structure
Conducting a survey to collect bathymetry, grab samples and shallow cores in the Nelson platform and Nelson South Subsea structure 500 meter zones
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Scale squeeze - Teal P2 Well
Scale squeeze being conducted from the Island Valiant on Teal P2 well
For info:
Scale squeeze, a process used in oil and gas wells to prevent or mitigate mineral scale formation by injecting a scale inhibitor chemical into the well and allowing it to be retained within the reservoir rock.
See detailed map on our bulletin website
Subsea Disconnects Campaign 3 - East Brae, Braemar and Devenick
Subsea Disconnects Campaign 3 is to remove hydrocarbon content and disconnect subsea assets from the East Brae installation.
Subsea Disconnects Campaign 3 is to remove hydrocarbon content and disconnect subsea assets from the East Brae installation.
TAQA have contracted Subsea 7 to utilise the Seven Falcon. The vessel will be working at Braemar and Devenick subsea facilities. Work will also be completed at the East Brae Crossover manifold to disconnect East Brae from Brae Alpha and SAGE gas pipeline.
The scope includes flushing fluids from subsea facilities to East Brae.
See detailed map on our bulletin website
Subsea Decommissioning - Western Isles Locations
Dana Petroleum (E&P) Limited has contracted Boskalis Subsea Services (BSS) for the Western Isles decommissioning project using the CSV Boka Northern Ocean.
Harris and Barra fields are located in Block 201/24a of the UKCS, 160km to the East of Shetland, and apprcximately 500km North-North East of Aberdeen. The water depth in the area varies from approximately 150m to 165m. The Western Isles production storage and offshore vessel (FPSO) has been disconnected and offstation, but production trees and water injections trees via 9-off flexible risers, 2 -off dynamic umbilical's, 2 -off bundle systems with associated spools and jumpers, 2- off mid-water arches (MWA), FPSO mooring piles, concrete mattressess remain on location. Boka Northern Ocean will carryout some of the decommissioning works commencising in early April for up to 90 days on location, note only ROV's operations from the CSV Boka Northern Ocean for this part of the project.
See detailed map on our bulletin website
General Visual Inspection over old standalone wellhead - Old Wellhead GVI
ROV based Anchor Handling Vessel will be mobilised to the field to conduct very high level general visual inspection over an old standalone wellhead. The scope duration is 12 hours if weather permits.
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Rig Move - Swift 10 - Wingate Platform Activity
Mobilization of SWIFT 10 drilling rig and P&A activity of 6 wells on the Wingate platform. Preparations for the decommissioning of the platform including P&A of all wells, conductor removal as well as pipeline cleaning.
Around the first week of April the SWIFT 10 jack-up rig will be mobilized from the Dutch Sector to perform the P&A of all 6 wells on the Wingate platform. The estimated term for completion of this scope is 4 months. During the initial positioning and demobilization of the drilling rig there will be 4 anchors deployed at ~500m from the platform. These will be recovered after positioning of the rig and deployed again when the rig is ready to be demobbed and returned to the Dutch sector.
A further notice will be sent when the date for the move is confirmed.
Update on timing. Rig schedule now shows the start of the mobilization for April 12th.
Rig move update. Departure from Dutch sector now planned for Thursday April 17th with arrival in UK sector of April 18th
Update: Departure from Dutch sector now planned for Friday April 18th with arrival in UK sector on April 19th
SWIFT 10 Rig is ready to commence decommissioning operations and will remain alongside Wingate platform until end of July
See detailed map on our bulletin website
3D OBN survey - Utsira North
The survey is a shooting methodology where ocean bottom nodes (OBN, single nodes, NO ropes) are rolled, and source operations are conducted centrally within the active node patch. Node Vessels: Havila Subsea. (dual ROV’s and a MantaRay vehicle with 6000 nodes) Source Vessels: Oceanic Champion
The survey will be acquired using the following vessels:
Node Vessels: Havila Subsea. The node vessel will be equipped with dual ROV’s and a MantaRay vehicle with a node inventory of 6000 Manta3000 nodes.
Source Vessels: Artemis Athene/Oceanic Champion. The source vessels are equipped with fully redundant hexa-source arrays of 800cu.in.
The survey will start from the south.
The area where nodes are layed out (present on the seafloor, blue in hte attached picture ABP25201_weeklyprogress_Modelled.png) will be updated regularly by Equinor Marin on BarentsWatch/FiskInfo https://www.barentswatch.no/fiskinfo/ (Seismikk, olje og gass - Equinor aktsomhetsområder, see attachment for example)
See detailed map on our bulletin website
Plug and Abandonment Operations - Hudson Wells
Noble Patriot to complete plug and abandonment operations at Hudson wells. Positioned within radius of 61 15 38.99' North 00 42 33.20' East 2 and 61 15 11.08' North 00 44 09.40' East.
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Route Survey - Pegasus West Field and Pipeline
On behalf of INEOS Energy, N-Sea Offshore B.V. are undertaking a geophysical/ Unexploded Object (UXO), shallow geotechnical and environmental survey at the proposed Pegasus West field development site, and along a route from the Breagh A platform to the Pegasus West site in Quadrants 42 and 43. The survey is being carried out using the Survey and IRM Support Vessel ‘Braveheart Spirit’.
The Survey and IRM Support Vessel ‘Braveheart Spirit’ has commenced a geophysical/ Unexploded Object (UXO), shallow geotechnical and environmental survey at the proposed Pegasus West field development site, and along a route from the Breagh A platform to the Pegasus West site in Quadrants 42 and 43. The survey commenced on 21/04/25 and is expected to continue until end of May 2025.
The scope of the proposed survey involves the collection of data (to include Sub-bottom profiler (SBP) sparker, multi beam, echo-sounder, sidescan sonar (SSS), Magnetometer (MAG), Cone Penetrometer Testing (CPT) and vibrocore seabed samples) over an area of 61 square kilometres (km2).
An environmental baseline survey will also be conducted within this area, comprising a visual using drop cameras and Van Veen grab sampling.
The wider greater working area is 365 km2, within which the survey vessel will manoeuvre during line turns and during equipment deployment and recovery.
The finish date will be dependent on the prevailing weather conditions and work progress, and this bulletin will be updated as required.
Mariners are requested to remain where possible 500m from the vessel. During these works the Braveheart Spirit will have restricted manoeuvrability and shall also be exhibiting the correct day shapes / night lights for vessels restricted in their ability to manoeuvre.
A Fisheries Liaison Officer will be on board.
See detailed map on our bulletin website
500m controlled zone - Abbey-2 WHPS Incomplete
The Subsea Abbey-2 WHPS (wellhead protective structure) is installed over the well, but the structure requires further work to complete. The work is planned to be completed in the spring, but in the meantime the location is to be guarded by a guard vessel, initially the Putford Terminator ERRV will maintain a controlled 500m zone around the Abbey-2 subsea well location. Work is expected to be complete at end of May and this controlled zone will end.
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Removal Operations - Ben Lawers Bullseye
The Normand Subsea vessel will be conducting bullseye removal operations on behalf of bp Exploration Operating Company Limited at the Ben Lawers well location. The operations are estimated to take up to 72hrs and will take place within an operational window covering the 23rd April - 30th April 2025.
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Laggan Tormore Hot Tap Tee Tie In on Flow Line 1
The vessel Deep Discoverer (Call Sign C6EB7) will arrive in Field (Co-ordinates below) to carryout construction activities at the Hot Tap Location for the installation of a Hot Tap Tee Structure at this location. These activities will be carried out by divers from 1 May to 15 May.
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Jackdaw Development - North Sea
The Jackdaw field is an ultra-high pressure/high temperature (uHPHT) reservoir that will be developed with a not permanently attended Wellhead Platform (WHP). Four wells will be drilled at the Jackdaw WHP. Produced fluids will be exported via a subsea pipeline to the Shearwater platform where these will be processed before onward export via the Fulmar Gas Line and the Forties Pipeline System. Vessels for 2025: Normand Drott/ Deep Arctic/Deep Discoverer & HLV Sleipnir.
Jackdaw Installation 2025/2026
New SSIV, tie-in spools and associated protection will be installed using DSV in the Jackdaw 500m zone between the Jackdaw wellhead platform and the new pipeline which was installed in 2024.
The pipeline ploughing, partially finished in 2024 will be fully completed using trenching support vessel.
The pipeline will be flood, cleaned and gauged from the Shearwater 500m zone using either DSV or CSV supported by supply vessels for water transfer.
New tie-in spools and associated protection will be installed using DSV in the Shearwater 500m zone between the SSIV and pipeline.
New electro-hydraulic/chemical umbilical will be installed between Jackdaw wellhead Platform and New Jackdaw SSIV using DSV.
Rock dump of the pipeline will be carried out using a rock dump vessel
See detailed map on our bulletin website
Rig - JB-115 ACP P15-A/C/D
This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.
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Rig - Askeladden
This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.
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Rig - Ensco 92
This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.
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Rig - Seafox 4
This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.
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Freespan PL624/625 - Camelot Area Block 53 Southern North Sea
2 x Free Span identified on the Pipeline PL624/625 - 19.17m length x 0.89m height & 13.77m length x 4.11m height
624/625, block 53 SNS. All co-ordinates are based on International Spheroid 1924, European Datum 1950, Universal Transverse Mercator Zone 31N Projection, Central Meridian 3° E.
|
KP |
Easting |
Northing |
Water Depth |
Length |
Height |
|
|
5.303 |
447263.59 |
5870188.85 |
37.74 |
19.17 |
0.89 |
Freespan - Start |
|
5.322 |
447279.17 |
5870200.03 |
38.53 |
19.17 |
0.89 |
Freespan - End |
|
5.426 |
447363.15 |
5870260.33 |
43.11 |
13.7 |
4.11 |
Freespan - Start |
|
5.44 |
447374.39 |
5870268.16 |
37.72 |
13.7 |
4.11 |
Freespan - End |
Rig move - Irish Sea Pioneer
ISP Rigmove notification. Planned Rig move from Hamilton Platform (Liverpool Bay) to Lennox Platform (Liverpool Bay)
ISP is moving to this new position to carry out support work for CCS (Carbon Capture & Storage) activities
See detailed map on our bulletin website
Geophysical Surveys - Katy, Kelvin, Munro, Saturn and Boulton
The Geo Ocean III will be performing geophysical surveys (Magnetometer, Side Scan Sonar and MBES) at Katy, Kelvin, Munro, Saturn and Boulton and a geotechnical survey (CPT) at Kelvin and Munro.
The Geo Ocean III is expected to mobilise in Hull on the 18th April to undertake a 15-20 day seabed survey campaign at the five satellite locations in the Southern North Sea. The vessel will be working at Katy, Kelvin, Munro, Boulton and Saturn 500m safety zones. Upon completion of the survey campaign, the vessel will demobilise in Hull.
See detailed map on our bulletin website
Unrecovered USBL Beacon - NEP Endurance Survey
The Geo Ocean IV has temporarily abandoned a USBL beacon array within the NEP Endurance survey. The Beacon is located in 60m of water and is not a hazard to navigation or a risk to snagging from fishing activity.
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Environmental Survey - ETAP
Environmental and Geophysical survey operations carried out by the vessel Ocean Researcher, on behalf of bp, shall commence approximately 7th of May. Survey operations are expected to last a duration of 7 days accounting for any delay due to adverse weather.
Ocean Researcher shall initially be conducting surveys at approximately 4 knots using multibeam echosounder, sidescan sonar and magnetometer. Some of the equipment shall be towed approximately 300-400m astern of the vessel. An environmental survey, consisting of at least 26 grab samples, will also be conducted upon completion of the geophysical survey works.
Throughout the duration of the survey, the vessel shall have restricted ability to manoeuvre.
See detailed map on our bulletin website
Nearshore Geophysical Cable Survey - Teesside
The geophysical nearshore survey for the Northern Endurance Partnership (NEP) (bp) is scheduled to commence on 26 April 2025 and is expected to last for approximately 60 days (25th June), allowing for potential delays due to adverse weather conditions. The survey will utilise Multibeam Echosounder (MBES), Sidescan Sonar (SSS), Sub Bottom Profiler (SBP) and Magnetometer equipment, some of which will be towed up to 150 metres astern of the survey vessel.
A simplified area is displayed within this Kingfisher Bulletin the full list of coordinates and extent of the planned survey within the NEP Teesside Cable Survey Area is shown in table 1 of attached notice. The EGS Echo will only survey areas >30m in water depth along the NEP cable survey area.
An NFFO Offshore Fisheries Liaison Officer (OFLO) will be onboard the vessel during the survey available on VHF Channel 16.
Contact details for the Fishing Industry Representative and Company Fisheries Liaison Officer are provided in attached.
See detailed map on our bulletin website
Metocean Buoy Installed - Pierce Area
A spherical wave buoy with a diameter of 0.4 meters was installed in the Pierce Field.
WGS84: 57° 09' 21.72''N, 002°16' 11.34'' E
Clump weight: 140 kg steel ballast with chain
Deployment date: 13/04/2025
Radius cone: ~120m
Model: Sofar Spotter Buoy
Diameter: 0.43 m
Colour: yellow
LED light: 0.5s flash every 2.5s with a visibility of at least 1 nm.
There are two auxiliary floats, each with a diameter of 11'' and in red, within 20 m of the buoy.
See detailed map on our bulletin website
VSP Vertical Seismic Profiles - Culzean wells (C2 & C4)
Vessel with seismic source to acquire data along the surface above the trajectories of 2 wells in the Culzean area.
Single vessel (either AHV or PSV) with a seismic source deployed by vessel crane (15m max from vessel) to acquire Vertical Seismic Profiles (VSPs) over 2 Culzean wells (C2 & C4). the vessel will start within the Culzean 500m zone, for each well, and proceed approximately due East for approximately 1km, following the trajctory of each well at surface. there will be 30-50 source locations per well and, at each location, 70-100 individual shots acquired. Each well may be re-acquired, ie survey repeated multiple times. estimate duration of acquisition is 36 hours, not including weather standby.
See detailed map on our bulletin website
Rig Move - Noble Great White to Ben Lawers
Please be advised that the semi-sub rig 'Noble Great White' is due to move in DP mode from Schiehallion North West to Ben Lawers. The move is due to commence around the 29th April and take approximately 5-7 days, depending on weather and operations. Multiple AHV's will be in the area as support. Actual transit route will vary.
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Development Project - Victory Field
The Victory Project is to develop the Victory subsea gas field as a single well tie-back to the Shetland Gas Plant. This is to be achieved by drilling a new well and installing a pipeline to route hydrocarbons via an existing hot tap tee into the existing Greater Laggan Area (GLA) pipeline system to export via the Shetland Gas Plant. Well control will be provide via an umbilical pipeline route from Edradour manifold location to the Victory Well.
Note: the Victory wellsite is within an Offshore Development Area and as such, it is advised not to fish within an ODA because of potential construction activities.
Vessel Plan for 2025
|
Vessel Name |
Location |
Arrival |
Departure |
Activity |
|
Stena Don |
Victory |
18/03/25 |
30/05/25 |
|
|
DSV Deep Discoverer |
Victory |
28/04/25 |
15/05/25 |
Victory Hot Tap Execution |
| DSV Deep Explorer |
Victory |
08/06/25 |
12/06/25 |
Victory Protection Structure Install |
| TBC Coaster (Transport Flexibles France to UK) | Victory | 28/06/25 | 01/07/25 | TBC Coaster (Transport Flexibles France to UK) |
| Olympic Challenger (LCSV) | Victory | 24/06/25 | 26/06/25 | Victory XT Metrology |
|
(Guard vessel) - 3 |
Victory |
25/06/25 |
05/09/25 |
Guard Pipeline at Victory |
|
(Guard vessel) - 5 |
Victory |
18/07/25 |
18/08/25 |
Guard Umbilical at Edradour |
|
(Guard vessel) - 4 |
Victory |
23/07/25 |
05/09/25 |
Guard Pipeline at H TT 1-2 |
| Skandi Africa | Victory | 07/07/25 | 31/07/25 | Umbilical & Flexible Installation |
| Stornes | Victory | 01/08/25 | 17/08/25 | Umbilical & Multibore Spool Rockdumping |
|
Deep Arctic |
Victory |
02/08/25 |
25/08/25 |
Spool Install, Spool Tie-ins, Pre-Commissioning & Mattresses |
|
Nordnes |
Victory |
01/09/25 |
04/09/25 |
Rock Campaign 4b (Post tie-ins / Flexible) |
Well tie-in and commissioning works - Brodgar H5 subsea tie-in
The Brodgar H5 well tie-in and commissioning work will commence on the 30th April and will take up to 35 days to complete. Works will be undertaken from the Boka Polaris DSV.
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Rig - Noble Invincible
This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.
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Deepsea Atlantic at Utgard location
Deepsea Atlantic as moored at Utgard cross border location.
The mooring system for Deepsea Atlantic comprises of 12 anchors (4 single anchors ad 4 anchors with pigs) with 700-1100m of bottom chain per line. The mooring line consists of 800m 165mm fibre rope with subsurface buoys on each line.
Total of 8 x anchors and lines installed but only 3 x anchors (#s 1, 3 and 12) and lines inside UKCS. Attached pdf shows NCS anchors and lines.
An exclusion of 2200 meters radius from the centre (rig position) is requested.
See detailed map on our bulletin website
Rig Move - Well-Safe Defender
This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.
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Rig - Deepsea Nordkapp
This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.
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Rig Move - COSL Pioneer
This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.
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Rig - West Elara
This oil & gas drilling rig has moved to this new position. Rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.
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Rig - Noble Resolute
This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.
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Rig - Valaris 123
This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.
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Rig - Swift 10
This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.
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Rig - Valaris 72
This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.
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Decommissioning - Wenlock
The ERDA Jackup Barge will undertake well plug and abandonment (P&A) works at the Wenlock installation. Works will be between 18 April 2025 and 01 July 2025. This P&A works are located within the 500m exclusion zone generated by the Wenlock installation.
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Transit and Location of HLV Rambiz and Gulliver for the Removal of Installations Hewett 48/29B & C
Transit and final location of Heavy Lift Vessels (HLV) Scaldis Rambiz & Gulliver. Scaldis will commence the removal of the decommissioned installations the Hewett 48/29B and 48/29C in April 2024. There will be HLVs located at the 48/29B and 48/29C completing the removal of the installation's topsides and jackets and will be transiting from the port of Flushing to the location on the 13th of April. The HLV is expected to be on location at the 48/29B on the 13th of April as per the schedule below.
The schedule below provides an overview of the planned works for HLV Rambiz, HLV Gulliver and their supporting vessels for the removal of the 48/29B and 48/29C platforms This schedule does not include possible weather delays.
Mobilisation to Field 48/29B 13/04/2025
Interim Demob 23/04/2025
Mobilisation to Field 48/29C HLV Ramiz 01/05/2025
Modules transporting to Sagro 27/05/2025
Preparations 48/29C 17/06/2025
Transit to 48/29B 21/06/2025
Modules 1 shipping to Sagro 28/06/2025
Modules 2 shipping to Sagro 13/07/2025
Transit back to field 17/07/2025
48/29 C Topside Removal HLV Gulliver 06/08/2025
Topside shipping to Sagro 08/08/2025
Transit back to field 48/29B 11/08/2025
Topside shipping to Sagro 17/08/2025
Transit back to field 48/29B 19/08/2025
48/29B Jacket shipping to Sagro 27/08/2025
Interim Demob 29/08/2025
Transit back to field 48/29C 01/09/2025
48/29C Jacket shipping to Sagro 08/09/2025
Contingency Stub Removal 12/09/2025
Leg Stubs shipping to Sagro 16/09/2025
See detailed map on our bulletin website
Rig - Noble Integrator
This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.
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Geophysical survey - Clair Anchoring Conditions
Geophysical survey operations carried out by the vessel Ocean Researcher, on behalf of bp, shall mobilise on 29th of April. Survey operations are expected to last a duration of 7 days accounting for any delay due to adverse weather.
Ocean Researcher shall be conducting surveys at approximately 4 knots using multibeam echosounder, sidescan sonar and sub-bottom profiler. Some of the equipment shall be towed approximately 300-400m astern of the vessel. Throughout the duration of the survey, the vessel shall have restricted ability to manoeuvre.
See detailed map on our bulletin website
COSL Innovator MODU at Belinda BE-01
Submitting a notice to make fishing vessels aware that anchors are to be pre-laid at Belinda BE-01 between 7th and 10th March 2025. MODU due on location 16th March 2025. Expected to vacate end of May 2025.
The MODU COSLInnovator is scheduled to be on location at Belinda BE-01 location to undertake drilling operations.
See detailed map on our bulletin website
Offshore Geophysical Cable Survey - NEP Teesside
The geophysical and geotechnical offshore survey for the Northern Endurance Partnership (NEP) (bp) is scheduled to commence on 14 April 2025 and is expected to last for approximately 75 days. The extent of the planned survey within the NEP Teesside Cable Survey Area >30m in depth.
The geophysical and geotechnical offshore survey for the Northern Endurance Partnership (NEP) (bp) is scheduled to commence on 14 April 2025 and is expected to last for approximately 75 days, allowing for potential delays due to adverse weather conditions. The survey will utilise geophysical survey equipment (Multibeam Echosounder (MBES), Sidescan Sonar (SSS), Sub Bottom Profiler (SBP) and Magnetometer equipment) some of which will be towed up to 150 metres astern of the survey vessel. It will also utilise geotechnical equipment (Cone Penetration Test {CPT} equipment, Vibracorer and Day Grab sampler). The extent of the planned survey within the NEP Teesside Cable Survey Area >30m in depth shown in Figure 1 of the attached notice. Coordinates of Teesside Cable Survey Area also provided in Table 1 in the attached notice. An NFFO Offshore Fisheries Liaison Officer (OFLO) will be onboard the vessel during the survey available on VHF Channel 16. Contact details for the Fishing Industry Representative and Company Fisheries Liaison Officer are provided in the attached.
See detailed map on our bulletin website
Pre-laying of anchors at Hudson - in preparation for Noble Patriot arrival
Pre-laying of anchors at Hudson - in preparation for Noble Patriot arrival. As detailed within WIA/1726 CL/1508 & CL/1509. 8 x GBAs to be deposited within radius of 61 15 38.99' North 00 42 33.20' East 2 x GBAs to be deposited within radius of 61 15 11.08' North 00 44 09.40' East
Pre-laying of anchors at Hudson - in preparation for Noble Patriot arrival. As detailed within WIA/1726 CL/1508 & CL/1509.
8 x GBAs to be deposited within radius of 61 15 38.99' North 00 42 33.20' East
2 x GBAs to be deposited within radius of 61 15 11.08' North 00 44 09.40' East
Metocean Buoy Installed - Penguins Area
A yellow spherical wave buoy with a diameter of 0.9 meters was installed in the Penguins Field. The buoy has a clump weight of 500kg (steel ballast with chain) and has a radius cone of 300m. LED light: 5 flashes in 10 s 20 s repetition 360° around for 4 Nm distance
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Geophysical Offshore Survey - Geo Ocean IV Geophysical Survey Endurance
The geophysical offshore survey for the Northern Endurance Partnership (NEP) (bp) carried by the Geo Ocean 4 is estimated to commence on 13 April 2025 and is expected to last for approximately 21 days, allowing for potential delays due to adverse weather conditions.
The survey will utilise Multibeam Echosounder (MBES), Sidescan Sonar (SSS) and Magnetometer equipment, some of which will be towed up to 150 metres astern of the survey vessel.
See detailed map on our bulletin website
Seismic Survey - Subsea Seismic Nodes - Leman Field
Please be advised that 12 retrievable nodes will be deployed on the seabed in the Leman Field as part of upcoming spot seismic survey.
12 retrievable nodes will be deployed on the seabed for the duration of upcoming seismic survey - their deployment is anticipated from October 25th 2024 until April 30th 2025. These nodes are 1m x 1m in size, the ballast weighing 26kg with a 10kg bouyant. These nodes will not be marked by a surface buoy.
See detailed map on our bulletin website
Injection Trials - Leman 27H
Please be advised that the ERDA Jack-Up Barge (JUB) is due to transit to Leman 27H (UKCS Block 49/27) in the Leman Field, where it will support with upcoming CCS trials. The estimated earliest arrival date of the ERDA at Leman 27H is 29th December 2024. The JUB will remain on location at Leman 27H until latest 30/04/25.
Please be advised that the ERDA Jack-Up Barge (JUB) is due to transit to Leman 27H (UKCS Block 49/27) in the Leman Field, where it will support with upcoming CCS trials. The estimated earliest arrival date of the ERDA at Leman 27H is 29th December 2024. The JUB will remain on location at Leman 27H until latest 30/04/25.
See detailed map on our bulletin website
Well Intervention Work - HAEVA at ST3 Ravenspurn Field
Please be advised that the HAEVA Jack-Up Barge (JUB) is due to depart from the Arthur subsea manifold on 30th September 2024 (at the earliest and dependent on weather), and transit to ST3 (UKCS 42/30) in the Ravenspurn Field, where it will commence Well Intervention work. The estimated earliest arrival date of the HAEVA at ST3 is 1st October 2024. The JUB will remain on location at ST3 until latest 30th April 2025.
Please be advised that the HAEVA Jack-Up Barge (JUB) is due to depart from the Arthur subsea manifold on 30th September 2024 (at the earliest and dependent on weather), and transit to ST3 (UKCS 42/30) in the Ravenspurn Field, where it will commence Well Intervention work. The estimated earliest arrival date of the HAEVA at ST3 is 1st October 2024. The JUB will remain on location at ST3 until latest 30th April 2025.
See detailed map on our bulletin website
Ground Moorings at Alligin Drill Centre
Seven mooring ground chain and pennant sections were recovered during the week commencing 14th October 2024, as part of the rig move to Schiehallion North. One mooring remains in place until further notice, at the below noted location. There are no surface buoys or mid-water sections.
Seven mooring ground chain and pennant sections were recovered during the week commencing 14th October 2024, as part of the rig move to Schiehallion North. One mooring remains in place until further notice, at the below noted location. There are no surface buoys or mid-water sections.
See detailed map on our bulletin website
OGW Rig - Schiehallion North West Drill Centre
Please be advised that the semi-sub rig Ocean Great White is now hooked up at North West DC, using the below noted mooring pattern. There are no surface buoys on site. Anchor handler vessels have departed, and the rig expects to be on site for 5 - 7 weeks.
Please be advised that the semi-sub rig Ocean Great White is now hooked up at North West DC, using the below noted mooring pattern. There are no surface buoys on site. Anchor handler vessels have departed, and the rig expects to be on site for 5 - 7 weeks.
See detailed map on our bulletin website
Ground Moorings - Schiehallion North Drill Centre
5 mooring ground chain and pennant sections were recovered during the week commencing 20th January 2025, as part of the rig move to Schiehallion North West. Three moorings remain in place until further notice, at the below noted locations.
5 mooring ground chain and pennant sections were recovered during the week commencing 20th January 2025, as part of the rig move to Schiehallion North West. Three moorings remain in place until further notice, at the below noted locations.
See detailed map on our bulletin website
2025 DSV Decommissioning - B-Block
The DSV Boka Da Vinci will be completing decommissioning activities at B-Block. The vessel will be at B-Block from the 13th May for ~ 40 days. The vessel will be at Solan from the 24th April for ~ 20 days then will return once the B-Block scope is completed on the 19th June for 50 days.
The DSV Boka Da Vinci is due to mobilise in Aberdeen on 24th April to undertake a 110 day offshore campaign to execute the Decommissioning scopes at Solan and B Block within the Central North Sea. The vessel will be working at Solan and B-Block 500m safety zones. Upon completion of the offshore campaign, the vessel will demobilise in Aberdeen. During port calls for Solan, the vessel will utilise Lerwick, Shetland.
See detailed map on our bulletin website
2025 DSV Decommissioning - Solan
The DSV Boka Da Vinci will be completing decommissioning activities at Solan. The vessel will be at B-Block from the 13th May for ~ 40 days. The vessel will be at Solan from the 24th April for ~ 20 days then will return once the B-Block scope is completed on the 19th June for 50 days.
The DSV Boka Da Vinci is due to mobilise in Aberdeen on 24th April to undertake a 110 day offshore campaign to execute the Decommissioning scopes at Solan and B Block within the Central North Sea. The vessel will be working at Solan and B-Block 500m safety zones. Upon completion of the offshore campaign, the vessel will demobilise in Aberdeen. During port calls for Solan, the vessel will utilise Lerwick, Shetland.
See detailed map on our bulletin website
Diving operations at Douglas suspended wells & Hamilton E SS well - BOKA Topaz
DSV will prep suspended wells outside the Douglas 500m zone & Hamilton East SS well. All work is inspection/cleaning and potentially some minor cutting ops.
DSV will prep suspended wells outside the Douglas 500m zone & Hamilton East SS well. All work is inspection/cleaning and potentially some minor cutting ops.
See detailed map on our bulletin website
Noble Endeavor at C-Triassic Well (Pre-lays and rig position)
The Noble Endeavor will complete drilling and completion activities at Penguin C-Triassic Well location. The work will take 127days (D50), 178 days (D90) and will be moored with 8 anchor lines through this time. Prior to rig arrival, pre-lays will be installed from the 30th of March. The rig is then estimated to arrive on the 9th of April.
The Noble Endeavor will complete drilling and completion activities at Penguin C-Triassic Well location. The work will take 127days (D50), 178 days (D90) and will be moored with 8 anchor lines through this time. Prior to rig arrival, pre-lays will be installed from the 30th of March. The rig is then estimated to arrive on the 9th of April.
See detailed map on our bulletin website
Install and tie-in - Schiehallion North Drill Centre West of Shetland
Subsea works at Schiehallion North Drill Centre (204/20a), West of Shetland. Planned works described in Consent to Locate: CL/1487/2 - from OPRED (attached to this Notification) & Pipeline Works Authorisation PA/5147, consent ref 35/V/25 - from the NSTA. Works include installation of Xmas Tree on the recently drilled Water Injection well & subsequent tie-in via jumper installation to existing infrastructure. All works will remain within the 500mz at 204/20a Schiehallion North Drill Center.
The Schiehallion, Loyal & Alligin subsea fields (West of Shetland) are to be expanded with new water injection and production wells over a campaign from 2023 to 2025, with all new wells connecting to existing subsea infrastructure. To date 4 new wells have been installed with a further 2 wells to be installed in 2025. As part of this phase of work, a new water injection Christmas Tree (NW05) will be tied into the existing subsea infrastructure, via 6" water injection jumpers, along with new controls supply jumpers (hydraulic and electrical) connected into an existing controls distribution assembly. This work scope also includes the movement of previously wet stored jumpers from a defined wet store location into the work site. This wet store location and all other activities covered within these Notifications are located fully within the subsea 500m zone surrounding the Schiehallion North Drill Centre – locations as per attached. The Normand Subsea MSV will carry out the subsea activities, scheduled to take ~6 weeks.
See detailed map on our bulletin website
New Safety Zone: Gryphon Alpha, Gryphon Field, Block 9/18
A new safety zone has been granted by the Secretary of State for the above location/structure. The safety zone came into force on 25th March 2025.
Kingfisher note:
This safety zone may be new, or an amendment to an existing zone. It may also replace a safety zone in place around a platform, or other surface structure for the purposes of decommissioning.
Your FishSAFE Information will be updated in the next release.
See detailed map on our bulletin website
New Safety Zone: Belinda Wellhead, Belinda Field, Block 21/30f
A new safety zone has been granted by the Secretary of State for the above location/structure. The safety zone came into force on 25th March 2025.
Kingfisher note:
This safety zone may be new, or an amendment to an existing zone. It may also replace a safety zone in place around a platform, or other surface structure for the purposes of decommissioning.
Your FishSAFE Information will be updated in the next release.
See detailed map on our bulletin website
Geophysical Survey - Galvani
The survey will involve two-dimensional ultra-high resolution (2DUHR), two-dimensional high resolution (2DHR) data acquisition and an environmental survey, consisting of at least 11 grab samples, over the Galvani survey area and tie lines using a 160 cu. in and 10 cu. in source array. Survey data will also be acquired using a parametric sub-bottom profiler (SBP), multibeam echosounder (MBES), side scan sonar (SSS) and a magnetometer.
The survey will involve two-dimensional ultra-high resolution (2DUHR) and two-dimensional high resolution (2DHR) data acquisition over the Galvani survey area and tie lines using a 160 cu. in and 10 cu. in source array.
Survey data will also be acquired using a parametric sub-bottom profiler (SBP), multibeam echosounder (MBES), side scan sonar (SSS) and a magnetometer. The acoustic equipment will operate over a 12 km2 survey area at Galvani.
Outside of the survey areas, but within the Greater Working Area (GWA), the survey vessel will make line turns (where the vessel turns upon completing one survey line and commencing the next).
An environmental survey, consisting of at least 11 grab samples, will also be conducted upon completion of the geophysical survey.
See detailed map on our bulletin website
Gas Export Pipeline - Rosebank Development
Multiple vessels will be carrying out ROV survey, boulder clearance, pipelay, trenching and pipe burying operations along the Rosebank Development pipeline route between the charted Rosebank Development Area and the WOSPS Tie-in Safety Zone. Other vessels are requested to keep safe distance.
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Weather Buoy Installation – Rosebank Offshore Development Area
A tethered meteorological weather buoy will be installed at the given coordinates. Vessels are requested to keep safe distance.
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Marine Installation Operations – Rosebank Development Area
Multiple vessels will be carrying out pipeline and subsea structure installation activities within the charted Rosebank Development Area. Other vessels are requested to keep safe distance.
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Seabed Remediation - Mungo
Boka Northern Ocean will be undertaking seabed remediation works in the vicinity of the Mungo NUI to facilitate the deployment of a Jack Up Drilling Rig for future drilling operations. The dredging operations will ensure that a stable and even area is available for the spud cans to sit on. All works will be completed within the platform 500m zone.
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Diving operations in Ninian Area
Vessel Boka Topaz operating in the Lyell, Ninian, Strathspey and Columba E fields between 07 April and 03 June, carrying out diving activities.
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Drilling underway- Appraisal well - Crosgan 42/14a-C
The Prospector 1 is now on location for 90 days in block 42/14a to drill an appraisal well.
The Prospector-1 is a self elevated jack-up rig which is now in position over the proposed well location, and is currently jacking down its legs to the seabed. The Prospector 1 is anticipated to spend a total of 90 days at the proposed Crosgan 42/14a-C appraisal well location.
See detailed map on our bulletin website
New Safety Zone: Victory PLEM (South), Victory Field, Block 207/1b
A new safety zone has been granted by the Secretary of State for the above location/structure. The safety zone will come into force on 25th March 2025.
Kingfisher note:
This safety zone may be new, or an amendment to an existing zone. It may also replace a safety zone in place around a platform, or other surface structure for the purposes of decommissioning.
Your FishSAFE Information will be updated in the next release.
See detailed map on our bulletin website
New Safety Zone: Victory PLEM (North), Victory Field, Block 207/1a
A new safety zone has been granted by the Secretary of State for the above location/structure. The safety zone will come into force on 25th March 2025.
Kingfisher note:
This safety zone may be new, or an amendment to an existing zone. It may also replace a safety zone in place around a platform, or other surface structure for the purposes of decommissioning.
Your FishSAFE Information will be updated in the next release.
See detailed map on our bulletin website
New Safety Zone: Teal West Development, Teal West Field, Block 21/24d
A new safety zone has been granted by the Secretary of State for the above location/structure. The safety zone will come into force on 25th March 2025.
Kingfisher note:
This safety zone may be new, or an amendment to an existing zone. It may also replace a safety zone in place around a platform, or other surface structure for the purposes of decommissioning.
Your FishSAFE Information will be updated in the next release.
See detailed map on our bulletin website
Well Intervention Work - HAEVA at ST2 Ravenspurn Field
Please be advised that the HAEVA Jack-Up Barge (JUB) is due to depart from the ST3 platform at the earliest date of 27th March 2025 (dependent on weather), and transit to ST2 in the Ravenspurn Field, where it will commence Well Intervention work. The estimated earliest arrival date of the HAEVA at ST2 is 30th March 2025. The JUB will remain on location at ST2 until latest 30th June 2025.
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Stena Don at Victory A1 Well (Pre-lays and rig position)
The Stena Don will complete drilling and completion activities at Victory A1 location. The work will take 75days (D50), 92 days (D90) and will be moored with 8 anchor lines through this time. Prior to rig arrival, pre-lays will be installed from the 12th of March. The rig is then estimated to arrive on the 20th of March.
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Diving - Hewett Field
Diving will be transferring from the DSV Topaz to the Boka Da Vinci on the 18th Dec, the campaign will now go through to end of april 2025
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Seabed Debris - Hewett 52/5A Platform Removed
The Hewett gas installation the 52/5A has been removed - however some seabed debris will remain until final removal activities.
This notification relates to the Hewett 52/5A Installation, its removal (topsides and jacket) as part of the overall Hewett Field Decommissioning Project and the presence of debris on the seabed within the footprint and vicinity of the jacket as a legacy from its operational life (> 50 yrs). This debris has the potential to create hazards for other users of the sea, in particular trawling and fishing activities.
A seabed debris removal campaign will be undertaken (timing to be confirmed) to achieve and demonstrate the requirements for seabed clearance (including over trawl), as defined in the overall Hewett Field Decommissioning Programmes for surface and subsurface infrastructure.
See detailed map on our bulletin website
Rig - Well Safe Protector
This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.
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Metocean Buoy - Victory Development
Metocean buoy installed at the Victory development area. Buoy is floating on surface with mooring consisting of steel ballast. Note that buoy can move up to 150 m around deployment location. Deployment vessel: MS Elisabeth Duration: 6 months
Markers:
Metocean buoy
Character: Fl (5) Y 20s
Color: Yellow disc
Mooring: 3000 kg steel ballast with chain
Buoy diameter: 3 m
AIS base station address: 1328842/1/Shell Victory Wave Buoy WS154
See detailed map on our bulletin website
Infill Drilling - Cygnus Field
The Valaris Norway is due to move into the Cygnus field between 18 March - 31st December 2025 to carry out infill drilling.
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Diving Support Vessel (DSV) Activity at Thistle Platform
Diving Support Vessel (DSV) 'Seven Atlantic' will be performing Inspection, Repair and Maintenance (IRM) and decommissioning activities at the Thistle platform.
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Hazard - Forvie Manifold
Potential new snag hazard observed at subsea protection structure over the Forvie Manifold. Structure sits at center of the subsea 500m zone. Vessels requested to stay well clear of 500m zone.
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Obstruction - Well 44/21-1
Following on from a Survey. An obstruction has been identified, it is believed to be less than 1m above the seabed. It is advised to avoid the location until this has been resolved.
There is no recorded infrastructure within this area. There is an Abandoned Phase 3 wellbore within the area of this obstruction.
The surveying company will complete another survey in the near future to visualise the obstruction better, but this is not confirmed yet. In the meantime we would like to make you aware as we believe this obstruction is not currently recorded on any admiralty charts.
See detailed map on our bulletin website
Rig - Noble Innovator
This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.
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Exposed pipeline at PL2557 cut-off
Exposed pipeline at PL2557 cut-off location which presents a snagging hazard.
Rock placement previously covering PL2557 cut-off location is no longer in place. Exposed cut-off pipeline presents a snagging hazard on the seabed.
See detailed map on our bulletin website
Rig - Shelf Drilling Winner (ex Noble Sam Turner)
This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.
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PL24 Cut-point Freespan - North Sea
The cut-point of PL24 is exposed and is protruding significantly from the seabed; approximately 18m long and 6m high. This creates an increased risk of snagging of trawling equipment, or similar, compared to a regular freespan.
The cut-point of PL24 is exposed and is protruding significantly from the seabed; approximately 6m from the seabed at its highest point and overhanging approximately 18m long from where the line makes contact with the seabed again. This creates an increased risk of snagging of trawling equipment, or similar, compared to a regular freespan.
See detailed map on our bulletin website
Rig - Noble Reacher (ex Maersk)
This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.
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Rig - COSL Promoter
This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.
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Rig - Deepsea Aberdeen
This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.
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Rig - Noble Lloyd Noble
This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.
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E&A well abandonment campaign
Dismantling infrastructure on 12 Exploration & Appraisal wells to achieve Abandonment Phase 3 status.
The vessel is the Royal Wagenborg MSV Kingsborg. The schedule is from 19th February to 30th April.
See detailed map on our bulletin website
Irish Sea in Combined Operation with the Hamilton Platform
Irish Sea Pioneer Rig Move from Hamilton North Platform to the Hamilton Platform (Liverpool Bay) completed. Irish Sea Pioneer now in combined operation with the Hamilton Platform
Will be in combined operations (COMOPS) for approximately 110 days supporting Pipe Line Pigging Operations, Well Interventions and Maintenace activities. Rigs are protected by a 500m safety zone.
See detailed map on our bulletin website
Freespan - PL1339 Interconnector Pipeline
Free Span identified on the IUK Pipeline PL 1339. 65mtrs length x 1.2m height
Exposed Pipeline at the following location.
Emergency Remediation plan in progress
Notice issued on behalf of Interconnector (IUK)
See detailed map on our bulletin website
Metocean Survey - Clair Ridge Are
bp is planning to carry out metocean survey activities within the Clair area. Near seabed current data and associated parameters will be collected over an initial period of 12 months. The survey will be undertaken using an MPV and the total survey time is expected to be 3 days for deployment and 365 days for survey activities. The survey operations will involve the placement seven metocean deployments with moorings on the seabed that will remain in place for a year.
Between 24/09 and 27/09, the seven laid metocean buoys were recovered, serviced and redeployed at the same target location. Further, the Metocean 5 deployment was fitted with an additional current meter such that the deployment height will increase from 13m to 34m above the seabed.
The buoys will remain in place until ~June 2025, at which date they will be recovered.
See detailed map on our bulletin website
V120 at Judy Riser Platform
Harbour Energy are performing a drilling campaign using the V120 Jack-Up drilling at the Judy Riser Platform location in block 30/07a. The Judy installations have a dedicated Emergency Response and Rescue Vessel (ERRV) on location monitoring the surrounding area.
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Plug and Abandonment Operations - UMC wells
Noble Patriot to complete plug and abandonment operations at the UMC wells. Positioned with 8 x GBAs within 500m radius of 61 09.44' North 01 06.44' East.
Noble Patriot to complete plug and abandonment operations at the UMC wells. Positioned with 8 x GBAs within 500m radius of 61 09.44' North 01 06.44' East.
See detailed map on our bulletin website
Structure in situ - Leverett CAN
Leverett CAN-basic left in situ until it is recovered by a vessel. Following the drilling of the Leverett appraisal well, the Transocean PBLJ and its anchors left the location on 14th February. The Leverett CAN-basic structure will remain in situ at the well location until it is recovered.
Recovery of the CAN-basic structure is now planned for summer 2025.
See detailed map on our bulletin website
Offshore Development Area - Victory Development
The Victory Project consists of the development of the Victory Subsea gas field as a single well tie-back to the Shetland Gas Plant. An Offshore Development Area has been put in place during the construction phase based upon the planned location of the Victory PLEM (North) between May 2024 and September 2025. The offshore development area for Victory Project was granted on the 20th March 2024. (see Schematic drawing att.)
UKCS Block ID: 206/4a, 206/5c and 207/1a
Water Depths refer to Lowest Astronomical Tide (LAT) with all depths quoted in metres – 126m – 296m
No visible marker (marker buoys) will be deployed.
See detailed map on our bulletin website
Rig - Askepott
This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.
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Rig - Linus
This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.
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Rig - Valaris 248 (ex Gorilla VI)
This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.
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Rig - Valaris 122
This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.
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Rig Move - Maersk Inspirer
This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.
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Rig Move - Shelf Drilling Fortress
This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.
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Rig - Valris 72
This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.
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Rig - Maersk Innovator
This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.
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Rig - Valaris 120
Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending hundreds of metres outside this zone.
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Rig - Valaris Stavanger
Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending hundreds of metres outside this zone.
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Valaris V121 over Shearwater Alpha
Valaris V121 MODU jack-up rig will be situated over Shearwater Alpha platform. Valaris V121 MODU will be on location at Shearwater until June 2026.
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