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Debris Survey - Leman F and Galleon PG
Fugro Searcher to execute debris surveys in an area of 1300x1300m around Leman F and Galleon PG platforms
Fugro Searcher to execute debris surveys in an area of 1300x1300m around Leman F and Galleon PG platforms. Surveys are eexecuted suing multibeam and towed sidescan sonar. Duration is 3days per platform location excluding weather
See detailed map on our bulletin website
ROV Visual Pipeline Inspections - Shell Pipelines Central North Sea
Ocean Infinity Armada 7801 lightly crewed ROV/Survey Vessel to perform pipeline inspections along various Shell pipeline routes
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Metocean Buoys - Victory Development Area
1x metocean buoy and 1x metocean buoy mooring floating in the water column at the Victory development area. Submerged buoy is 18 m above seabed. Note that surface buoy mooring can move up to 150 m around deployment location. Note that moorings are not visible on the surface.
Surface buoy mooring (Western most):
WGS84: Lat: 60° 59.191'N, Long: 001° 53.696'W
Mooring: 3000 kg steel balast with chain
Buoy diameter: 3m
Charcter: Fl (5) Y 20s Colour: Yellow disc
MMSI 992351432
Station name: Shell Victory Wave Buoy WS154
Submerged buoy (Eastern most)
WGS84: Lat: 60° 59.324'N, Long: 001° 53.834'W'
Water Depth: 145.9 m
Mooring: 500 kg steel balast with chain
Buoy diameter: 1 m
See detailed map on our bulletin website
HAM E flushing and disconnection - HAM N and HAM M inspections - Liverpool Bay Area
DSV will support and carry out flushing from HAM E to HAM N. lines will then be disconnected and relocated. optional inspection scopes are at HAM N and HAM M. platform leg inspections only. Other platforms could be subject to ROV or diver inspections, this is currently only back-up work
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Diving - Hewett Field
Flushing and disconnection of various pipelines. DSV Vessel Boka Da Topaz will be working within the Hewett field. Various pipelines connected to Littly Dotty/Deborah/Dawn/DELLA/DELILAH subsea wells will be flushed from topsides and disconnected subsea by divers. P&A activities with V72 RIG
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Well Plug & Abandon activities - Juliet/ Minke & Orca
Carry out DSV barrier testing and frame removal at Juliet and Minke locations from April 2024. Carry out DSV dredging activities at Orca Well in April 2024. (Completed) Carry out Rig P&A activities at Juliet/ Minke & Orca Wells from April through to September 2024.
DSV Boka Polaris to arrive at the Juliet and Minke locations to prove barriers prior to rig intervention.
WHPS framework to be cut off by DSV at the Juliet and Minke locations.
Open hole dredging activities to be carried out at Orca Well in preparation for rig arrival. (Completed)
Drill Rig "Well Safe Protector" to carry out P&A activities at Julient/ Minke and Orca locations.
See detailed map on our bulletin website
Subsea Decommissioning - Banff & Kyle
Vessels will be completing subsea decommissioning activities at the Banff and Kyle fields. Scopes are to be carried out mainly inside existing subsea 500m Safety Zones, but some scopes will be completed out-with these zones.
7-day campaign of recovery of subsea structures, commencing 5th Sept
See detailed map on our bulletin website
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.
Vessel: Nordnes - Rockdump - 15th June 2024 until end June 2024.
Vessel: Deep Energy : 24th July 2024 - 6th August 2024
Vessel: Skandi Africa 3rd August 2024 - 6th August 2024
Vessel: Olympic Trition 8th August 2024 - 4th September 2024
Vessel: Nordnes - Rockdump 1st September 2024 - 25th September 2024
Vessel: Stornes - Rockdump - 15th September 2024 - 23rd September 2024
Pipeline installation including the 2 x PLEM Structures one at each end of the pipeline system. The Pipeline is 14" carbon steel line, routed from Victory well location to the hot tap tee location on existing GLA pipeline.
Note; the Victory wellsite is within an Offshore Development Area and as such, is not for entry by trawlers.
See detailed map on our bulletin website
Decommissioning - Chestnut Field Phase 2
Spirit Energy has contracted the Deep-Ocean-operated Normand Jarstein construction support vessel (CSV) to undertake subsea infrastructure removal (and other) activities in connection with the continued decommissioning of the Chestnut field, located in UKCS block 22/2a of the central North Sea.
The vessel is scheduled to commence her mobilisation in Aberdeen South Harbour (or Peterhead) in the period the 20th to 30th September 2024, with removal activities commencing approximately a day after. The activities are scheduled to take approximately 5 days to complete.
See detailed map on our bulletin website
Manifold removal - Arthur Field
The HAEVA jackup barge will be deployed to remove the manifold in the Arthur field
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Rig Move - PBLJ MODU at Gilderoy Field
Notice to alert sea users of exploration drilling operations at the Gilderoy field, block 15/28b, using the PBLJ MODU.
Harbour Energy plan to move the PBLJ semi-submersible drilling rig from the NW Seymour subsea development location to the Gilderoy field location to perform exploration drilling operations in block 15/28b. Throughout the operations there will be a dedicated Emergency Response and Rescue Vessel (EERV) on location monitoring the surrounding area.
See detailed map on our bulletin website
Hazardous Structure - North West Hutton Platform Footings
Please note that the four footings of the decommissioned North West Hutton Platform are not included on the current FishSAFE information (v48). This omission will be corrected in the next data issue. The area is covered by a 500m advisory zone, as the platform footings remain in place post-decommissioning and represent a significant snagging risk.
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Penguins Riser Installation & Kestrel Phase 4
As part of the ongoing Penguins Redevelopment Project, the Boskalis Boka Northern Oceans will mobilise in June to progress installation of the subsea infrastructure. This campaign will also include the installation of several mechanical protection GRP structures which will be performed at various locations throughout the Penguins field. The Seven Kestrel DSV will mob 6th Sept (2wks) to complete the riser tie-ins and the installation of the GRP covers. (Drawings attached).
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Disconnection - Brent WLGP (PL17)
This scope of work is to flood the Cormorant Alpha to WLGP SSIV production pipeline PL17, before cutting and recovering a short section within the NL-WL PLEM 500m safety zone, as part of a series of works to de-energise Cormorant Alpha. Vessel Name: Seven Atlantic
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Buoyant Risers - Foinaven Field
As per a previous notification (Sep 2022), the Petrojarl FPSO has been removed from the Foinaven field. 13 risers remain on site, with buoyant sections located up to 160m above the seabed. A recent check confirmed riser location and height has not changed, but they remain a snagging hazard. 3 new Statutory Instrument 500m safety zones replace the original FPSO safety zone - visible on Admiralty charts and Fishsafe. The zones fully encompass all buoyant risers, and remaining seabed assets.
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Pre-lay Operation - Schiehallion North Drill Centre
Please be advised that Anchor Handler Vessel 'Aurora Sandefjord' will be performing pre-lay operations for ground moorings at the Schiehallion North Drill Centre from circa 4th September for 7 to 10 days, depending on weather and operations. The planned locations for the ground moorings and associated pennants are as listed in this notice. No surface buoys are expected to be installed at present.
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Ground Moorings - Schiehallion North West
Four mooring ground chain and pennant sections were recovered during the week commencing 1st July, as part of the Alligin pre-lay operation. Four moorings remain in place until further notice, at the below noted locations in the Schiehallion NW field. There are no surface buoys or mid-water sections.
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Rig Move Schiehallion West Drill Centre to Alligin Drill Centre
Please be advised that the semi-sub rig Ocean GreatWhite is now hooked up at Alligin DC (NE of the Glen Lyon FPSO), using the below noted mooring pattern. There are no surface buoys on site. Anchor handler vessels have departed, and the rig expects to be at Alligin for 4 - 6 weeks.
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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.
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Drilling - Baker Exploration well
Drilling of the Baker exploration well by the Noble Resilient jack-up drilling rig
Petrogas North Sea Ltd intends to carry out drilling operations using the jack-up drill rig “Noble Resilient” at the Baker gas field . The work is expected to take around 55 days at the Baker location after which the rig will move to the Abbey location for a further 85 days of drilling. However the actual duration will depend on both operational and weather factors. Whilst at each location the vessel will be static and connected to the seabed so is unable to move or manoeuvre its position.
Petrogas seeks the cooperation of fishermen to refrain from placing static fishing gear within 500m of the two Abbey or Baker well site locations, where the jack-up drill vessel will be working, This is to avoid any entanglement, interference or damage to either the fishing gear or drilling equipment.
See detailed map on our bulletin website
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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Pipeline Route Survey - Tornado Field
The survey vessel, Fugro Venturer, will be undertaking a Geophysical, 2DHR Seismic, Shallow Geotechnical and Environmental survey in the Tornado Field and along a proposed pipeline route from Tornado to Laggan-Tormore.
Survey will last for up to 48.5 days, but potential end date of operations may extend beyond this if there are scheduling, operational or weather delays.
See detailed map on our bulletin website
Geological Survey - Alba Xtreme South
Alba Xtreme South Survey - Side Scan Sonar, MBES, video and grab samples to record seabed topography, identify and seabed and sub-seabed features or obstructions, seabed habitats and data for environmental baseline.
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Rig - Well-Safe Guardian
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 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 - Deepsea Yantai
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 Resolute (ex Maersk 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 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 - 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 - 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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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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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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Subsea Well Plugging & Abandonment - Banff, Strathspey and Ninian fields
Vessel-based subsea well plugging and abandonment, wellhead conductor severance, and recovery of wellheads from the seabed. Activities are to be carried out across the Banff, Kyle, Strathspey, and Ninian fields.
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Rig - Valaris 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 - 590021
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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Offshore Survey of PL1270 - Britannia to SAGE Pipeline
The execution contractor will undertake non-intrusive survey of PL1270. Note: The survey acquisition methods are MBES, with GVI spot dives (if required).
The appointed survey contractor will survey PL1270 (Britannia Gas Export Pipeline) on behalf of Harbour Energy. The contractor will acquire Multibeam Echosounder (MBES) and General Visual Inspection (GVI) data it anomalous targets are encountered. The survey will extend from KP24.800 to KP140.000. The survey and will take ~5.64 days to complete
Note: The execution schedule is unconfirmed due to other vessel commitments.
See detailed map on our bulletin website
Nearshore Survey of PL1270 - Britannia to SAGE Pipeline
The execution contractor will undertake non-intrusive survey of PL1270. Note: The survey acquisition methods are MBES, SBP and CP.
The appointed survey contractor will survey PL1270 (Britannia Gas Export Pipeline) on behalf of Harbour Energy. The contractor will acquire Multibeam Echosounder (MBES), Sub-Bottom Profiler (SBP) and Cathodic Protection (CP) data. The survey will extend from the nearshore approach ~KP0.000 (MLWS) to KP4.500. The survey shall take ~7 days to complete and the mobilisation window is depending on the vessel completing its current work commitments and the environmental conditions onsite.
See detailed map on our bulletin website
Irish Sea Pioneer Rig Move
Irish Sea Pioneer to move from Birkenhead Cammell Laird Wet Basin out Liverpool Bay Hamilton Platform on the 2nd September. Then move from the Hamilton Platform to Liverpool Bay Douglas Accommodation (DA) platform on the 3rd Sept.
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Annual subsea facilities inspection
ROV inspection of subsea infrastructure with multiple ROV's from ROVSV, likely the Deep Vision.
Visual inspection, cleaning and cathodic protection measurements.
14 day period within the Start and End Date below.
See detailed map on our bulletin website
Wishbone 3D Site Survey - EQ24322
The vessel Ocean Resolution will conduct a 3D site survey at Wishbone location, across sectors 16/18, 16/23 and 16/24. The vessel will tow two seismic cables and a side scan sonar fish. The vessel will also be equipped with a hull mounded multi beam echo sounder and a hull mounted sub bottom profiler instrument.
The vessel Ocean Resolution will conduct a 3D site survey at Wishbone location location across sectors 16/18, 16/23 and 16/24.
The vessel will tow two seismic cables and a side scan sonar fish and will also be equipped with a hull mounded multi beam echosounder and a hull mounted sub bottom profiler instrument.
- Length of towed seismic cables: 1200m
- Width of towed array: 25m
- Depth of towed array: 2.5m
Vessel: Ocean Resolution
Call Sign: MKRE5
IMO: 9779446
Bridge VSAT: +44 (0) 20 3868 2072
Client Rep: +44 (0) 20 3868 2073
VHF: Channel 16
See detailed map on our bulletin website
2024 IRM Campaign 2 (CSV2)
The Vessel Island Frontier (Call Sign LAYE5) will be carrying IRM (Inspection, Repair, Maintenance) Operations in the vicinity of the locations noted below: Dates = 25th August 2024 - Duration expected to be approx. 19 Days (to 14th Sept)
The Vessel Island Frontier (Call Sign LAYE5) will be carrying IRM (Inspection, Repair, Maintenance) Operations in the vicinity of the locations noted below:
Dates = 25th August 2024 - Duration expected to be approx. 19 Days (to 14th Sept)
See detailed map on our bulletin website
Subsea Obstruction - North East of the Southwark platform
Scour Conditions have created a protruding section of the export pipeline 100 metres North East of the Southwark platform
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E&A Well Decommissioning Campaign
Excavation, cutting and removal of conductors to achieve AB3 status
Mobilisation of the MSV Kingsborg to complete a scope of work on 4 x E&A Wells
See detailed map on our bulletin website
27H HAEVA Workover
Interface of the HAEVA rig with the Leman 27H platform
Interface of the HAEVA rig with the Leman 27H platform to support with well workover project.
See detailed map on our bulletin website
Pipeline survey - Birgitta, ETAP and Montrose platforms
Survey of pipeline route between Birgitta and ETAP and Birgitta and Montrose platforms. The proposed survey operations will be undertaken along the centre of the two routes, and within a 2km by 2km box surrounding the proposed Birgitta well locations. The greater working area (including line turns) is a 3km boundary surrounding the total survey area is anticipated to be approximately 208 km2
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Freespans along Fulmar Gas Line
Freespans, not greater than Kingfisher critical span reporting criteria but potential hazard. These will be monitored over time. Next inspection planned in Q4 2024.
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Rig move - Valaris 123
Valaris 123 drilling rig will be moving from the Selene field to the Pensacola field weather depending on Tuesday 1st October and be under tight tow to the Selene field with estimated arrival on Friday 4th October.
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Rig move - Valaris Norway Douglas to Lennox
Valaris Norway Planned rig move Douglas to Lennox,
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Area of Responsibility Operations - Brent Delta
Operations to remove the remaining attic Oil in the Brent Delta cells, two vessels will be on location the Normand Jarstein & Siri Knutsen.
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Brent Delta AOR – ROVSV (Jarstein) Mobilisation – 5th August
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Brent Delta AOR – Tanker Mobilisation – 10th August
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Brent Delta AOR – Cell to Tanker Transfer complete – 2nd September
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Brent Delta AOR – Demobilisation – 16th September
Ocean Endeavor MODU Move And Operations - Penguins Field
Notification for MODU move of Ocean Endeavour at Penguins field.
Please note the anchors and the associated lines extend outwith the MODU 500m zone.
See detailed map on our bulletin website
Brent Subsea Infrastructure Decommissioning (SID) - Outstanding Works
The vessel 'Olympic Ares' will be undertaking outstanding decommissioning works that will include: Debris & grout bag recovery works from SPAR PLEM, VASP, NLGP SSIV, & within the safety zones at BA, BB, BC & BD; degraded Mattress recovery from BA & NLGP SSIV; anode skid recovery from some decommissioned pipelines; anchor pile removal from BA splitter box; and recovery of Brent 7 guide base in open water, between BB and BC and recovery of umbilical severance device on PLU6294, near the NLGP SSIV.
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Metocean Buoy Installed - Penguins Area
A spherical wave buoy with a diameter of 0.9 meters was installed in the Penguins Field.
WGS84: 61° 34' 37.77'N, 001° 31' 36.36'E
Clump weight: 500 kg steel ballast with chain
Deployment date: 24/07/2024
Radius cone: ~300m
Diameter: 0.9 m
Colour: yellow
LED light: 5 flashes in 10 s 20 s repetition 360° around for 4 Nm distance
See detailed map on our bulletin website
Metocean Buoy Installed - Pierce Area
A spherical wave buoy with a diameter of 0.9 meters was installed in the Pierce Field.
WGS84: 57° 09' 20.401'N, 002° 16' 12.279'E
Clump weight: 500 kg steel ballast with chain
Deployment date: 29/08/2023
Radius cone: ~150m
Model: Datawell Waverider
Diameter: 0.9 m
Colour: yellow
LED light: 5 flashes in 10 s 20 s repetition 360° around for 4 Nm distance
See detailed map on our bulletin website
Rig Move - Ensco 92 to Murdoch KM
Harbour Energy plan to move the Ensco 92 jack-up drilling rig from the Katy field location to the Murdoch KM field location to perform abandonment operations on the 44/22-10Y subsea well. Throughout the well abandonment operations there will be a dedicated Emergency Response and Rescue Vessel (EERV) on location monitoring the surrounding area.
Harbour Energy plan to move the Ensco 92 jack-up drilling rig from the Katy field location to the Murdoch KM field location to perform abandonment operations on the 44/22-10Y subsea well. Throughout the well abandonment operations there will be a dedicated Emergency Response and Rescue Vessel (EERV) on location monitoring the surrounding area.
See detailed map on our bulletin website
Valaris 123 Drilling Unit - Selene Well
Valaris 123 jack up rig arrived on location 23-July-2024. Valaris 123 jack up rig will stay on location for ~90days to drill Selene well.
Valaris 123 jack up rig arrived on location 23-July-2024. Valaris 123 jack up rig will stay on location for ~90days to drill Selene well.
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.
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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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Decommissioning - Leman 27J
Decommissioning activity will be carried out at the Leman 27J platform between July and November 2024. The ERDA Jackup Barge will be interfaced with the platform for the duration of the project. The decommissioning will involve the plug and abandonment of all wells, making the topside hydrocarbon safe (HSC), and the removal of the topside and it transport to shore for recycling.
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Obstruction - Well 44/21-1
An obstruction has been identified, it is believed to be less than 1m above the seabed.
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
C-Triassic Location - Penguins Field
The Ocean Endeavor will move to the C-Trriassic location with a mooring line spread that extends out up to 1.5km from the rig.
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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 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 - 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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Open Wellhead Protection Structure (WHPS) roof panels - North West Bell field
The roof panels on the Wellhead Protection Structure (WHPS) at the North West Bell location are currently in an open position. The WHPS is within the existing 500m 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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Orlando - Pipeline and Well General Visual Inspection
Serica intend to undertake a survey inspection program, the aim of which is to obtain information on the condition of the Orlando tree and wellhead, the Orlando pipeline and the Orlando static umbilical. The survey will comprise: mutli-beam echo sounder (MBES), sidescan sonar, drop camera/video using ROV for inspection of the Orlando tree/wellhead, pipeline and umbilical.
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Boulder next to Britannia gas export line
Boulder (2.3m x 2.2m x 1.5m) next to Britannia gas export pipeline. Boulder has been dragged next to the line by a fishing net. Fishing net is tangled around the boulder and associated trawl board is located nearby. Pipeline is marked on admiralty charts so should not be fished over. However, if it is there is a risk that another fishing net could become tangled around the boulder. This has potential to cause harm to the fishing net / boat and also pipeline.
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Judy oil export tie in spool at NORPIPE wye - pipe exposure
Judy oil export tie in spool at NORPIPE wye - pipe exposure over ca 50m creating additional trawl hazard. Rock was removed from Judy oil export tie in spool at NORPIPE wye in mid 2022 in support of valve changeout at NORPIPE wye. Valve changeout has been delayed until 2025 at which point rock will be reinstated. Absence of rock poses an increased risk of snagging fishing nets and also of pipeline damage.
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Pipeline Decommissioning - Western Isles to Tern
The 6" gas export / import pipeline between the Western Isles and Tern Developments will be decommissioned.
The Pipeline will be disconnected from the Tern subsea isolation valve (within the Tern platform 500 m safety exclusion zone) and the Western Isles North Riser Base (within the Western Isles FPSO / mid-water arches 500 m safety exclusion zones). Surface-laid connecting spools and associated mattresses at both ends of the pipeline will be removed. The pipeline sections back to the existing rock armour cover will be cut and recovered. The exposed ends will be temporarily protected useing concrete mattresses, and subsequently permanently covered with new rock armour.
See detailed map on our bulletin website
Western Isles infield subsea infrastructure decommissioning
Infield pipelines and manifolds associated with the Western Isles Development will be decommissioned
Risers, tie-in spools, manifolds and mid-water arches will be recovered from the seabed. The surface laid pipeline bundles serving the North and South drill centres will have appurtenances removed from their upper surfaces, but will remain in place until a decommissioning option is finalised. Wellheads will be left in place with existing fishing protection structures pending a future plug and abandonment campaign.
New rock armour will be deposited to protect exposed pipeline bundle ends at the North and South Drill Centre and North and South Riser Base locations.
See detailed map on our bulletin website
Rig - Paul B Loyd Junior
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 - 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 - 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 - 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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Seabed hazards following removal of Banff FPSO anchors & moorings
A series of deep, steep sided trenches at mooring line touchdown points. Moorings and anchors have been removed, leaving the seabed features.
10 mooring line trenches, varying in length from 70m to 180m; up to 8 metres wide and up to 9 metres deep. These trenches are steep-sided, cut into the clay seabed. Remediation of 7 of these trenches has been partially completed, although seabed verification has not yet been carried out.
See detailed map on our bulletin website
Western Isles FPSO & moorings decommissioning
The Western Isles FPSO will be disconnected from the subsea risers and moorings and floated off station. The mooring lines and piles will subsequently be recovered.
The FPSO will be disconnected from the subsea production, water injection and service umbilical risers, which will be temporarily laid on the seabed. The FPSO will then be disconnected from its moorings, with mooring lines also temporarily laid down on the seabed. The FPSO will then be towed off station using anchor handling tugs. The mooring lines will be recovered and the mooring piles will be cut 3 m below the seabed.
See detailed map on our bulletin website
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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Rigmove - Valaris 121
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 - 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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MODU Operations At Penguins
Operations with Stena Don MODU at Penguins location. Note: Anchor lines extend outwith the rig 500m zone
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3D Seismic Survey - UK Quads 219 & 220 / Norway Quads 6201, 6202, 6203, 6204
Survey vessel Amazon Warrior (Call Sign C6GL4) will be acquiring a regional 3D seismic survey starting 10th May 2024 until 30th September 2024. The vessel will be towing 14 x 8,000m long seismic cables in a east / west direction and will have restricted manoeuvrability. Mainport Cedar (support vessel) and 7 Oceans (scout vessel) will also be in attendance.
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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: SUV1/Deep Discoverer/Deep Energy/Normand Drott /SUV2 (Olympic Trition).
Jackdaw Installation 2024/2025
New Riser installed to Shearwater A using DSV.
New pipeline will be installed between Shearwater A and Jackdaw.
New SSIV will be installed within the Shearwater 500m zone using DSV or CV.
New electro-hydraulic/chemical umbilical & associated protection material will be installed between Shearwater C and new Shearwater SSIV using DSV.
New SSIV will be installed within the Jackdaw 500m zone using DSV or CV.
New electro-hydraulic/chemical umbilical will be installed between Jackdaw wellhead Platform and New Jackdaw SSIV using DSV.
New tie-in spools & associated protection material will be installed between new pipeline and Jackdaw riser via new SSIV using DSV.
See detailed map on our bulletin website
Rig - Deepsea Stavanger
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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Open WHPS roof panels at Murdoch KM 44/22a-10Y Well
The roof panels on the Wellhead Protection Structure (WHPS) at the Murdoch KM location are currently in an open position. The WHPS is within the existing 500m zone.
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Wellhead Protection Structure - Rita 44/22c-12Z
The Canopy has been removed from top of Wellhead Protection Structure (WHPS) on the Rita 44/22c-12Z subsea well. The WHPS is located within an existing 500m zone.
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Subsea Construction & Pipelay Activities - Talbot & Affleck Developments
Harbour Energy intends to undertake subsea construction & pipelay works on the Talbot Field Development project between March & September 2024. The Field Development traverses across UKCS Blocks 30/07b, 30/12a, 30/13d & 30/13e. In addition, NEO Energy also intends to undertake subsea construction & pipelay works on the Affleck Field redevelopment project commencing ca. 18th April 2024. The Field Development traverses across UKCS Blocks 30/07b, 30/12a, 30/13c, 30/13d, 30/13e, 30/14a & 30/19a.
Talbot Field Devleopment Project
Subsea activities on Talbot will commence 31st March 2024 with diving preparatory works within the Judy Platform 500m safety zone. This will be followed by the installation of a new 15km long 12”/18” Pipe-In-Pipe Pipeline and Electro Hydraulic Chemical (EHC) Control Umbilical between the Talbot Field and the Judy Platform. A Survey Support Vessel (SUV) will be used to support pipeline and umbilical lay operations as well as performing the pre-commissioning activities for the newly installed pipeline. A Trenching Support Vessel (TSV) will be used to plough and backfill the pipeline and umbilical. On completion of pipelay and trenching activities, a rock dump vessel will perform spot rock dump activities along the pipeline and umbilical route and at the existing pipeline crossing locations.
A subsea manifold structure (Talbot DC1 Manifold) will be installed at the Talbot field location using a Construction Support Vessel (CSV). The CSV will also install a further subsea structure (Talbot SSIV Manifold) within the Judy Platform 500m safety zone.
A Dive Support Vessel (DSV) will perform the tie-ins of the newly installed pipeline and umbilical at the Talbot DC1 Manifold location and within Judy Platform 500m safety zone. The DSV will also support the commissioning of the pipeline and umbilical.
All vessels will be transiting back and forth between the Talbot and Judy locations numerous times during the construction phase.
Affleck Field Developmentv Project
Subsea activities on Affleck will commence circa 18th April 2024 with a new 21km 8”/12” Pipe-In-Pipe Pipeline to be laid between the Affleck Manifold and the Talbot Field DC1 Manifold, and a new 36km Electro Hydraulic Chemical (EHC) Control Umbilical to be laid between the Judy Platform and the Affleck Manifold. In support of the pipelay and umbilical lay there will be a survey support vessel and two Trenching vessels, one to plough and backfill the pipeline and one to jet trench the EHC Umbilical. The survey support vessel will also be performing the pre-commissioning activities for the newly installed pipeline. The vessels will be transiting back and forth between these locations numerous times during the construction activities.
A Dive Support Vessel (DSV) will be performing the tie-ins of the newly installed pipeline and umbilical at the Affleck Manifold Location, the Talbot DC1 Manifold location and within Judy Platform 500m zone. The DSV will also support the commissioning of the pipeline and umbilical.
On completion of pipelay and trenching activities a rock dump vessel will perform spot rock dump activities along the pipeline and umbilical route and at the existing pipeline crossing locations. The rock dump activities are currently split into two separate scopes.
The earliest start date for Affleck operations to commence is 18th April 2024 with the operations expected to last until the end of September.
Key Co-ordinates
Key location co-ordinates are given in this bulletin. Also, please refer to the attached marked-up Admiralty Charts.
There are established 500m safety exclusion zones at all of these locations. Construction vessels will be operating both within and between all of the above mentioned 500m safety zones during the construction phase. All mariners are advised to remain clear of these locations until construction operations are completed.
Vessel Details
The combined Talbot and Affleck operations will be undertaken from the following vessels:
|
Operation |
Vessel |
Call Sign |
Dates in Field |
|
Dive Support Vessel (DSV) – Talbot Preparatory Works |
Deep Arctic |
C6XW3 |
March / April |
|
Survey Support Vessel (SUV) |
Olympic Triton |
LADM3 |
April / May / June |
|
Talbot & Affleck Pipeline Installation Vessel |
Deep Energy |
C6YL2 |
April / May |
|
Construction Support Vessel (CSV) – Talbot Umbilical and Structures Installation |
North Sea Atlantic |
LAYS7 |
May |
|
Affleck Umbilical Installation Vessel |
Deep Energy |
C6YL2 |
July / August |
|
Talbot & Affleck Pipeline Trenching Vessel (TSV) |
Normand Drott |
LDRO |
May / June |
|
Affleck Umbilical Trenching Vessel (TSV) |
Grand Canyon III |
LACJ8 |
August |
|
Dive Support Vessel (DSV) |
Deep Arctic |
C6XW3 |
July / Aug / Sept |
|
Rockdump Vessel (FFPV) Pipeline |
Nordnes (TBA) |
PHOG (TBA) |
June |
|
Rockdump Vessel (FFPV) Umbilical |
Nordnes (TBA) |
PHOG (TBA) |
September |
|
Guard vessels |
Various |
Various |
April to Sept |
See detailed map on our bulletin website
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 - Noble Resolve
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 - V120 to Judy Riser Platform
Harbour Energy plan to move the V120 Jack-Up drilling rig from the Talbot open water location to the Judy Riser Platform location in block 30/07a to perform a drilling campaign on three wells. The Judy installations have a dedicated Emergency Response and Rescue Vessel (ERRV) on location monitoring the surrounding area.
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