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Geotechnical Survey - Northern Endurance Partnership
The geotechnical offshore survey for the Northern Endurance Partnership carried out by the Dina Polaris was estimated to commence within the NEP extension areas GWA East and West (see attached notice) on the 30th September 2024.This was delayed due to weather and is now estimated to begin in the early hours of 03 October. Survey Positions within GWA East have been updated.
The survey involves the drilling, sampling and coring of boreholes within the greater working areas. The vessel will be stationary at each location for up to 24 hours to allow the samples and cores to be taken from the seabed.
An update to this notice providing sample locations will be given once established
See detailed map on our bulletin website
Umbilical testing and IRM works - Seagull Field
DSV Deep Discoverer will mobilise to Seagull field to carry out Umbilical testing and IRM works
DSV Deep Discoverer will mobilise to Seagull field to carry out Umbilical testing and IRM works
See detailed map on our bulletin website
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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Manifold removal - Arthur Field
The HAEVA jackup barge will be deployed to remove the manifold in the Arthur field
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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 & October 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 Development 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.
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 |
October |
|
Talbot & Affleck Pipeline Trenching Vessel (TSV) |
Normand Drott |
LDRO |
May / June |
|
Affleck Umbilical Trenching Vessel (TSV) |
North Sea Enabler |
LACJ8 |
October |
|
Dive Support Vessel (DSV) |
Deep Arctic |
C6XW3 |
July - Oct |
|
Rockdump Vessel (FFPV) Pipeline |
Nordnes |
PHOG |
June |
|
Rockdump Vessel (FFPV) Umbilical |
Nordnes (TBA) |
PHOG (TBA) |
Oct / Nov |
|
Guard vessels |
Various |
Various |
April to Nov |
See detailed map on our bulletin website
Maintenance and repair activity - Eris, Ceres, Mercury and Seven Seas Areas
Maintenance and repair diving operations being conducted from the Boskalis Polaris in the Eris, Ceres, Mercury and Seven Seas Areas.
Spirit Energy are planning to conduct maintenance and repair operations from the Boskalis Polaris in the Eris, Ceres, Mercury and Seven Seas areas. Operations are due to commence on 7th October 2024 and last for approximately 7 days. These dates are subject to change depending on weather and operational requirements.
See detailed map on our bulletin website
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
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 mobilise in Aberdeen South Harbour (or Peterhead) to allow removal activities in the field to commence as soon as 10th October 2024. The activities are scheduled to take approximately 5 days to complete (with no allowance for weather downtime).
See detailed map on our bulletin website
Wishbone Survey - Borehole Sample Drilling
Geotechnical borehole drilling (for sampling purposes) to be conducted at the Wishbone location comprising of a total of six individual boreholes over approximately 10 days. A clearance of 200m is requested around the Fugro Quest during operations.
Six geotechnical boreholes to be drilled from the vessel "Fugro Quest" at the Wishbone location over a period of approximately 10 days.
A seabed frame (~13 tonnes) will be placed and used to build a drill string to each location. The seabed frame acts as a counterweight when the tests are to be carried out. The instruments are taken down to the seabed through the drill string. Both in situ tests will be carried out in the borehole, and samples will be taken which will later be tested onshore in the laboratory. When the first drill hole is finished, the boat will pull up the drill string and the seabed frame so that they hang 10m above the seabed before moving to the next location. No anchoring is required during operations. The duration of each borehole should be approximately 12 hours.
Vessel: Fugro Quest
Call Sign: C6FO2
A clearnace of 200m is requested around the Fugro Quest during operations.
See detailed map on our bulletin website
Survey at 52/5a block
Fugro Ventura will survey block 52/5a. Platform has now been removed.
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Rig Move - Ocean Great White to Schiehallion North
Please be advised that the semi-sub rig 'Ocean Great White' is due to move in DP mode from Alligin around to Schiehallion North. The move is due to commence around the 2nd of October and take approximately 3-4 days, depending on weather and operations. Multiple AHV's will be in the area as support.
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Topaz Wellhead Protection Structure Removal
The Maersk Involver will be retrieving the Topaz Wellhead Protection Stucture, currently wet-stored as shown on the map. The vessel will be on-location from Wednesday 2nd October 2024 for a period of approximately two days maximum, performing ROV and lifting activities.
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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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Annual subsea facilities inspection - North Sea
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
E&A Well Decommissioning Campaign - Whittle 42-28b, Bell 49-23-8, Davy 53-05a-3, Davy East 53-05b
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.
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Apache North Sea: 2024 ROV Inspection Campaign Across Forties and Beryl Areas using ROVSV ETD Jane
Apache North Sea will be carrying out its annual ROV Inspection Campaign across all Apache assets in the Forties and Beryl areas in mid-October 2024. The vessel will be the ROVSV EDT Jane and will be in the areas for 30 days.
ROV Operations in the areas and good communication with all other vessels in the areas.
See detailed map on our bulletin website
Pre-laid Anchors - Schiehallion North Drill Centre
Please be advised that anchors have been pre-laid at the Schiehallion North Drill Centre. The locations for the ground moorings and associated pennants are as listed in this notice. There are surface buoys on Line 7 and Line 8.
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SEAL / Shearwater Project
The Vessel Seven Falcon (Call Sign 2EEN9) will be carrying DSV Operations in the vicinity of the location noted below for an approximate period of 18 days.
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Acoustic Monitor - Culzean Field
In preparation for the installation of a floating Wind Turbine at Culzean - an acoustic device will be deployed near to the proposed wind turbine location at the Culzean field. The acoustic device will be at the location noted below - but will extend to a total height of 25m above the seabed. The device will deployed from 24th September 2024 (depending on weather) and will be in place for approx. six months.
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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 Friday 1st November and be under tight tow to the Selene field with estimated arrival on Monday 5th November.
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COSL Innovator drilling at Guillemot North West Field
The COSL Innovator will be on location at the Guillemot North West Field from the 27th September for approximately 83 days.
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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.
-
Brent Delta AOR – ROVSV (Jarstein) Mobilisation – 5th August
-
Brent Delta AOR – Tanker Mobilisation – 10th August
-
Brent Delta AOR – Cell to Tanker Transfer complete – 2nd September
-
Brent Delta AOR – Demobilisation – was expected to be 16th September , tanker operations ongoing.
Brent Field Decommissioning
The Pioneering Spirit SLV is returning to the Brent Field to support continued decommissioning.
The Pioneering Spirit SLV is returning to the Brent Field to support continued decommissioning.
See detailed map on our bulletin website
Well intervention activity at Minke (44/24a - 6Y)
Following the plug and abandonment of a wellhead at 'Minke' it is being planned to collect the remaining guide base and conductor that was not possible to collect from the 'Well Safe Protector'.
Due to unstable seabed conditions, the conductor and guide base slipped and as a result, it is not possible due to remove using the Well-safe Protector due to access restrictions. Therefore, the removal of the conductors, completion tubing and casings will take place using a vessel. In addition, the vessel will be used for the removal of the flowline and Spool assembly which are currently wet stored in situ (covered under PLA/1037). All items will be recovered to surface and no wet storage of any items will occur.
See detailed map on our bulletin website
Subsea Disconnects Campaign 2B - Cormorant Alpha, Pelican
Taqa are decommissioning NNS asset Cormorant Alpha and associated subsea facilities UMC and Pelican. The Subsea 7 vessel "Seven Atlantic" will be undertaking operations to flush, disconnect and isolate UMC, Pelican and gas export / import line PL17 from Cormorant Alpha.
Taqa are decommissioning NNS asset Cormorant Alpha and associated subsea facilities UMC and Pelican. The Subsea 7 vessel "Seven Atlantic" will be undertaking diving operations to flush, disconnect and isolate UMC, Pelican and gas export / import line PL17 from Cormorant Alpha.
See detailed map on our bulletin website
Penguins Redevelopment Project - Offshore Development Area
The project includes extending the life of the existing wells and addition of eight new wells. The new wells will be tied into the existing Penguins infrastructure and connected into a new FPSO. The pipeline system will be split into a North and South production pipeline, with the FPSO positioned close to the centre of the field. An offshore development area has been granted on the 18th April 2024 to further protect the pressurised infrastructure during the ongoing construction phase.
UKCS Block ID: 211/13a and 211/14a
Water Depths refer to Lowest Astronomical Tide (LAT) with all depths quoted in metres.
No visible marker (marker buoys) will be deployed.
Schematic drawing has been attached.
See detailed map on our bulletin website
Victory Development - Offshore Development Area
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
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 will be recovered, serviced and redeployed at the same target location. Further, the Metocean 5 deployment will be fitted with an additional current meter such that the deployment height will increase from 13m to 34m above the seabed.
See detailed map on our bulletin website
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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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 - 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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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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Irish Sea Pioneer Rig Move - Douglas Accommodation to Hamilton North
Irish Sea Pioneer to move from Douglas Accommodation (DA) platform on the 23rd Sept to the Hamilton North platform (NUI).
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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.
3-week campaign of subsea debris recovery / clearance, commencing 8th October 2024
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 31st January 2025.
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Light Well Intervention Vessel - Seawell Works at Bittern & Clapham Fields
The Seawell LWIV will undertake works at the Bittern Field and Clapham Field from 14th September until the end of October 2024.
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Wet Store Area - Drilling Riser Pipe - North of the Schiehallion North West drill centre
Drilling riser pipe sections have been stored on the seabed in a designated area to the north of the Schiehallion North West drill centre. The riser pipe sections have been anchored to remain up to 3 m above seabed. This area is outside of the 500m zone for Schiehallion North West and poses a snagging risk to any fishing vessel operating in the area.
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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 - 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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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 - Noble Intrepid
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 - 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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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 - 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 - 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 - 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 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 - Prospector 1
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 - 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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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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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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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
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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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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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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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 - 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 - 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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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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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
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 Norway Douglas to Lennox
Valaris Norway Planned rig move Douglas to Lennox,
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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
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
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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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
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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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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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 - 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 - 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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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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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
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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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 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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