View Map 
Rig Move - Ensco 92 to Munro MH
Harbour Energy plan to move the Ensco 92 Jack-up drilling rig from the Kelvin TM field to the Munro MH field location to perform abandonment operations on the 44/17b-7Z well. Throughout the well abandonment operations there will be a dedicated Emergency Response and Rescue Vessel (EERV) on location monitoring the surrounding area.
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Rig Move -Ensco 92 to Darwen
Harbour Energy plan to move the Ensco 92 Jack-up drilling rig from the Munro MH field to the Darwen field location to perform abandonment operations on the 110/08a-4 well. Throughout the well abandonment operations there will be a dedicated Emergency Response and Rescue Vessel (EERV) on location monitoring the surrounding area.
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Captain flowline and umbilical jet trenching
The "Grand Canyon III" will be infield to jet trench (ROV) the Captain Area D and E flowlines and umbilicals.
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ROV Support Vessel (ROVSV) Survey Activities
ROVSV "EDT Jane" will be conducting survey activities between Kittiwake platform and Scolty subsea infrastructure.
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ROV Support Vessel (ROVSV) Survey Activities
ROVSV "EDT Jane" will be conducting a pipeline survey on PL2403 from Unity 500m zone to Kittiwake.
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ROV Support Vessel (ROVSV) Survey Activities
ROVSV "EDT Jane" will be conducting pipeline survey activities between Kittiwake Platform and Mallard subsea drill centre.
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ROV Support Vessel (ROVSV) Survey Activities
ROVSV "EDT Jane" will be conducting various survey activities within the Kittiwake 500m zone and also within the Fulmar Tee 500m zone.
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ROV Support Vessel (ROVSV) Survey Activities
ROVSV "EDT Jane" will be undertaking various survey activities within the Mallard & Gadwall 500m zones.
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ROV Support Vessel (ROVSV) Survey Activities
ROVSV "EDT Jane" will be completing survey activities on the "PL10" pipeline from Ninian Central to 12Nm from shore.
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ROV Support Vessel (ROVSV) Survey Activities
ROVSV "EDT Jane" will be completing pipeline survey activities on "PL1762" from 12Nm from shore to Magnus platform.
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ROV Support Vessel (ROVSV) Survey Activities
ROVSV "EDT Jane" will be completing survey scopes at Magnus, SWIFT, West Don, Don South-West, Thistle and Broom. Survey will be carried out on various pipelines, umbilical’s, wellheads and structures.
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Rig move & Appraisal Well Drilling - Devils Hole (block 27/5)
The Valaris (Rowan) Norway HDJU rig is scheduled to arrive and commence appraisal well drilling at the Devils Hole location (block 27/5), between 01/10/23 and 08/10/23.
On behalf of the Licensee (North Sea Natural Resources Ltd), and using the Valaris (Rowan) Norway HDJU rig (call sign V7WA9) - Three60 Energy are planning to undertake appraisal drilling operations at the Devils Hole (Horst) location (block 27/5).
Work is anticipated to commence between 01/10/23 and 08/10/23, for up to 73 days duration.
See detailed map on our bulletin website
Tolmount East Development (42/28d -13 & 14)
The Tolmount East well (42/28d-14 has been drilled and completed and a statutory 500 metre exclusion zone has been established at the location. Further field development remains ongoing throughout the course of 2023, in support of tying back the Tolmount East Well to the Tolmount Platform (located ~2nm South West of Tolmount East).
All vessels are requested to maintain a wide berth and avoid deployment of static gear within ~1nm of the development between Tolmount East 500m/z and the Tolmount Platform 500m/z.
The OSV North Sea Atlantic shall be utilised for the installation of subsea infrastructure from ~24th Sept and shall be operational in field for ~2 weeks, (subject ops and weather).
The above operations shall be followed on by a subsea rock installation campaign utlising the FFPV Stornes from mid October
The infield construction works shall be concluded via DSV operations utilising the Seven Atlantic from mid October to early November 23.
See detailed map on our bulletin website
Well-Safe Defender - Trees Field Area
The Well-Safe Defender will move location from the Larch field to the Birch field to undertake well plug and abandonment on or around 2 October 2023. This date is subject to change depending on weather and operational requirements. Work will be undertaken at Trees within the following locations in block 16/12a and include: Sycamore, Birch and Larch. Work is expected to finish in the area by mid-November 2023.
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Rig Move - Ocean Great White to Loyal
Please be advised that the Ocean Great White rig move from Schiehallion West to Loyal, circa 4 nautical miles NNE of Glen Lyon FPSO is now complete. The rig is hooked up to pre-installed moorings at Loyal. The current mooring spread is as per details in this notice. The surface buoys at both Loyal and Schiehallion West have been removed. The rig is expected to remain at Loyal; for 1-3 months.
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Lost core barrel - Abbey Field - Block 47/3
The core barrel of seabed sampling equipment has sheared while undertaking sampling in the Abbey field (Block 47/3) and is now sticking approximately 2.75 m out of the seabed. The core barrel is a hollow cylindrical tube, with diameter of approximately 10 cm.
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Rig - Stena Spey
The Stena Spey is anchored on location at K2 from June to October
The semi-submersible drilling rig, Stena Spey, is anchored on location undertaking drilling activities. A statutory 500 m safety exclusion zone has been established around the MODU. Unauthorised vessels, including fishing vessels, will not be not permitted to enter this 500 m zone. The Stena Spey is expected to leave location in October.
See detailed map on our bulletin website
DSV installation inspection/survey works - Liverpool Bay Area
Various diver inspections on various platforms in the Liverpool bay area. Diver inspection works at various elevations on Oil Storage Installation , Douglas, Douglas Accom, Hamilton and Hamilton North platforms in the Liverpool bay area. Pipeline Inspects will also take place if time allows. All work will be completed from the DSV Boka Polaris.
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Rig Move - PBLJ MODU at Callanish
Notice to alert sea users to drilling and completion operations at the Callanish 15/29b-FQ subsea development well location, using the PBLJ MODU.
The PBLJ semi-submersible drillling rig is currently on hire to NEO at the Leverett 21/03d-9Z well location. It is due to move to the Harbour Energy 'Callanish' subsea development location at the end of September to comence drilling and completion operations on the 15/29b-FQ development well. The PBLJ is currently forecast to be on location at Callanish on 2nd October (earliest forecast).
See detailed map on our bulletin website
Metocean Buoys - Victory Development Area
2 x metocean buoys are installed at the Victory development area. One is floating on surface, while the other is 18 m above seabed, both with clump weights. Note that surface buoy can move up to 150 m around deployment location.
Surface buoy (Western most):
WGS84: Lat: 60° 59' 11.52"N, Long: 01° 54' 06.96"W
Charcter: Fl (5) Y 20s
Colour: Yellow disc
Mooring: 3000 kg steel balast with chain
Buoy diameter: 3 m
Submerged buoy (Eastern most)
WGS84: Lat: 60° 59' 11.94"N, Long: 01° 53' 41.82"W
Mooring: 500 kg steel balast with chain
Buoy diameter: 1 m
See detailed map on our bulletin website
Decommissioning - Don Pipeline
Construction Support Vessel, Normand Jarstein will be carrying out decommissioning activities at the Don Field and along the Don pipelines towards the Thistle Platform. Mobilisation mid September with work continuing through to November.
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Metocean buoy - Pierce Area
A spherical wave buoy with a diameter of 0.9 meters was installed at Pierce Field on August 29th.
Colour: yellow
Shape: spherical
Diameter: 0.9m
The lantern has a flash sequence Fl (5) Y 20s. Please maintain a 200m exclusion around the buoy.
See detailed map on our bulletin website
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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Pre-lay anchors for Stena Don MODU
8 x pre-lays will be placed ahead of the Stena Don arrival on Kingfisher.
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Verification Operations - UKCS Blocks 29/03c and 29/04c
As part of the Shell U.K. site and pipeline route seabed survey there is a requirement to undertake a verification operation within UKCS Blocks 29/03c and 29/04c. The anticipated duration of the verification operation is one day. For further details on the main survey refer to Notice "Site and Pipeline Route Environmental Seabed Survey - Central North Sea".
Data will be acquired over the survey area using a multi-beam echosounder (MBES) and side scan sonar (SSS) equipment. The survey equipment will be operated within the survey area. The survey vessel will make line turns outside of the main survey area but within the greater working area (GWA). The co-ordinates provided are for the GWA.
The Survey will be undertaken by the MV Geo Ranger, Call sign PHHV and IMO Registration number 9885831.
See detailed map on our bulletin website
Site and Pipeline Route Environmental Seabed Survey - Central North Sea
Shell UK Limited is planning to undertake geophysical and environmental site survey and pipeline route survey activities mainly within UKCS Blocks 29/4 and 29/9, located approximately 220 km east of Scotland. The pipeline route extends into UKCS Blocks 22/30 and 29/5. The purpose of the survey activities is to assess anchoring conditions and debris in the area for potential anchor mooring patterns and to assess environmental conditions and habitats in the area.
The site survey will be conducted over a 6 km x 6 km survey area with an 8 km x 8 km greater working area (GWA). The pipeline survey corridor is 500 metres wide and the GWA is 2000 metres, 1000 metres either side of the pipeline route.
Data will be acquired over the survey area using a parametric sub-bottom profiler (SBP), multi-beam echosounder (MBES), side scan sonar (SSS), and magnetic surveying equipment. The survey vessel will make line turns outside of the survey area but within the GWA. Seabed samples will also be collected over the site survey area, including pipeline route, and photographic monitoring will also be undertaken.
The Survey will be undertaken by the MV Geo Ranger, Call sign PHHV and IMO Registration number 9885831.
See detailed map on our bulletin website
Geophysical Survey at Beryl 9/19-10z
Apache North Sea will be carrying out an offshore geophysical survey during September and October 2023 using Gardline’s survey vessel Ocean Researcher. The vessel will be towing a side scan sonar approximately 250 to 300m astern. Operations are only expected to take approximately 24 hours in total.
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Geophysical Survey at Beryl 9/13c-33
Apache North Sea will be carrying out an offshore geophysical survey during September and October 2023 using Gardline’s survey vessel Ocean Researcher. The vessel will be towing a side scan sonar approximately 250 to 300m astern. Operations are only expected to take approximately 24 hours in total.
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Geophysical Survey at Beryl 9/13-27
Apache North Sea will be carrying out an offshore geophysical survey during September and October 2023 using Gardline’s survey vessel Ocean Researcher. The vessel will be towing a side scan sonar approximately 250 to 300m astern. Operations are only expected to take approximately 24 hours in total.
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Geophysical Survey at Forties 21/10-08
Apache North Sea will be carrying out an offshore geophysical survey during September and October 2023 using Gardline’s survey vessel Ocean Researcher. The vessel will be towing a side scan sonar approximately 250 to 300m astern. Operations are only expected to take approximately 24 hours in total.
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Apache North Sea Surveys at Beryl and Forties Areas using the RV Ocean Researcher
Four Suspended Wells Debris surveys are to be undertaken using the RV Ocean Researcher in the Beryl and Forties fields to understand the seabed features, and subsequently any potential hazards or obstructions, that would impede anchor placement for the semi-submersible rig Well-Safe Defender, in advance of her plug and abandonment program for Apache North Sea
The Surveys will cover the anchor pattern for the rig at each proosed location, consisting of three survey lines (MBE, SS & magnetometer) spaced at 75m apart along each of the semi-submersible anchor pairs (approx. 12 lines per location ranging from 3.6km to 4.4km long)
See detailed map on our bulletin website
Rig - West Phoenix
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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Inert ordance and the recovery of the statutory buoy - Gannet GF04
Ordnance removal (expected to be inert) & Sonar buoy recovery
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Site Survey - Lofn Langemann
Site survey using the M/V Kommandor to be conducted mainly in NCS block 15/5 but partially into UKCS block 16/8. The wider survey area shown in the maps accounts for the anticipated 2.8 - 3.0km turns after each line.
Site survey at Lofn Langemann using the M/V Kommandor survey to be conducted mainly in NCS block 15/5 but partially into UKCS block 16/8. The wider survey area shown in the maps accounts for the anticipated 2.8 - 3.0km turns after each line.
The survey will consist of:
- One source of 160 cubic (4 x 40 ) inch air guns (HRS)
- One small source of 10 cubic inch air gun (UHRS)
- Sub-Bottom Profiler, Pinger Hull-mounted. (SBP)
- Single-Beam Echo Sounder (SBES)
- Multi-Beam Echo Sounder (MBES)
- Side Scan Sonar (SSS)
The total towed length of the array will be approximately 1300 meters.
In addition there will be 14 Cone Penetration Tests of the sea floor (CPT) all within the NCS area.
M/V Kommandor:
Call sign - MCJO2
VHF - Ch16
VSAT (Bridge) - +44 (0) 2038 688 439
See detailed map on our bulletin website
Cable Lay Activities - South Morecambe Bay Gas Field CPP-1 - DP8 Cable Lay
Spirit Energy has contracted the Boskalis - operated Boka Atlantis Diving Support Vessel (DSV) to undertake cable lay activities between the CPP-1 platform and the DP8 platform, and to undertake associated cable installation activities at these platforms. The platforms are located approximately 6 km apart in the South Morecambe gas field, east Irish Sea, UKCS block 110/3.
The cable will be trenched and buried using a separate vessel, notice of the activities of which will be given via an update to this bulletin. There will be a period of time - up to 70 days - when the cable will lie on the seabed before burial.
The Boka Atlantis is scheduled to commence activities at South Morecambe as soon as the 16th September 2023 (via a 3 day transit from Aberdeen). The vessel activities are scheduled to take approximately 7 days.
All activities (other than vessel transits) will take place within the HSE-recognised 500 m safety zone established around each platform, and in the approximate 6 km long cable lay ‘corridor’ (an approximate geographical straight line) between the two platforms.
See detailed map on our bulletin website
Rig - Seafox 2
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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Wellhead Severance campaign - Puffin, Curlew, Heron, Skua, Gannet, Brent North
The Siem Day will be used to complete a Wellhead Severance campaign, across multiple fields.
The Wellheads identified below will be removed as part of the decommissioning scope:
- Puffin (29/5A-5)
- Curlew B
- Heron H2
- Heron H4
- Skua P1
- Gannet C 101
- Gannet C102
- Gannet C103
- Gannet C301
- Gannet C303
- Gannet C401
- Gannet C403
Brent North North
See detailed map on our bulletin website
Vertical Seismic Profiling - Earn-1 well main bore
The Earn-1 well main bore will undergo vertical seismic profiling. The operations involve suspending a small airgun array from the side of the Valaris-121 drilling rig at approximately 5 m below sea level and firing the guns at approximately 18 second intervals for a period of up to 24 hours. The provisional start date is 8th September 2023, but this may be delayed, therefore the end date is set as 30th September 2023.
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Rig - Transocean Spitsbergen
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 - Deepsea Atlantic
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 - 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 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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Pipeline Route Surveys 49/17b to Leman A and to Markham J6A
A pipeline route survey is about to start on two possible export routes for new pipelines from the Anning and Somerville proposed platform sites in the old Viking field to Leman A and also to Markham J6A in the Dutch sector.
The pipeline route survey will be conducted by the vessel Ocean Observer and will consist of survey lines over a 300m wide swathe utilising hull-mounted and towed sensors close behind the vessel. The routes start at the proposed Anning and Sommerville platform sites in Block 49/17b and one route goes to leman A the other to the Markham J6A platform in the Dutch sector. In addition to survey lines CPT and Vibrocorer as well as environmental sampling will be carried out along the routes and intervals of several kilometres.
See detailed map on our bulletin website
Planned Rig movement - Seajacks Kraken (moving alongside N.Morecambe DPPA gas platform)
Update 3/9/2023 2020hrs: Seajacks Kraken has now entered the 500m safety zone of DPPA platform and is on location adjacent to the platform. It is planned that Seajacks Kraken mobile platform will come alongside the North Morecambe field DPPA gas platform to provide a walk-to-work facility for 33 days. Rigs are protected by a 500m safety zone.
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DSV Campaign - Penguins
The majority of the new Penguins Subsea infrastructure was installed throughout 2020/21. However several brownfield issues have been identified which require rectification. The Q4 2023 DSV campaign which involves both the Seven Kestrel & Seven Atlantic, aims to rectify these issues.
Provisional Mob dates & durations:
Seven Kestrel DSV - Mob 6th October (Duration 4 Wks)
Seven Atlantic DSV - Mob 4th November (Duration 2 Wks)
The respect scopes include accessing the following Penguins Drill centres:-
DC2
DC3
DC4
DC5
DC7
DC8
See detailed map on our bulletin website
Stena Don MODU at Scoter - Anchor Pattern
8 x Pre-laid anchors have been installed by the operator as below.
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Stena Don MODU on location at Scoter
The Stena Don Modu will be on location at Scoter for a 3-well anchor pattern. The reference location for the Stena Don will be Scoter SC-01.
The reference location for the Stena Don will be Scoter SC-01.
See detailed map on our bulletin website
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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Seismic Survey - Norfolk Coast
A 3D Seismic Survey will be carried out in the Hewett Field area off the Norfolk coast by the SW Amundsen and SW Vespucci.
Survey operations will be centered around the area of the ‘Hewett Field’ and will be carried out by the Seismic Survey Vessel SW Amundsen supported on site by the support vessel Ocean Dee and the Scout / Guard vessels Sorrento, Jacoba and Green Isle. The seismic vessel SW Vespucci will also be laying nodes around the platforms 48/29A, 48/29B, 48/29C, 52/5A from approximately 25th August to 16th September.
At all times while on-site the survey vessel ‘SW Amundsen’ will be operating as a vessel of ‘RESTRICTED MANOUEVERABILITY’ towing SIX submerged seismic cables at a length of 1.35 Nautical Miles astern. A clearance of 1 Nautical Mile is requested across the bow and down both sides and a clearance of 2.5 Nautical Miles from the stern of the vessel.
SW Amundsen will display appropriate lights and shapes while surveying.
The vessel and front and tail of the outer seismic cables will be marked by AIS.
The tailbuoys are yellow and have a flashing light and radar reflector
An Offshore Fisheries Liaison Officer will be present on the SW Amundsen.
See detailed map on our bulletin website
DSV Inspection, Repair & Maintenance - Campaign 3 North North Sea
Seven Atlantic (Call Sign 2CBP2) will be carrying IRM (Inspection, Repair & Maintenance) work in the vicinity of the locations noted below: Dates = 21st September to 4th October 2023 - Duration expected to be approx. 13 Days
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Isolde OBN Seismic Survey - UKCS Blocks 22/30, 23/26, 23/27, 29/5, 30/1 and 30/2
TGS will be conducting a OBN 3D seismic survey. The nodes will be deployed to the seabed from the Normand Tonjer vessel. The seismic source will be on a separate vessel, the Oceanic Champion. A chase vessel (Shemarah II LH65) will also accompany the survey vessels to liaise with fishermen and other small vessels and prevent collisions with the survey equipment. The survey vessels will follow a pre-planned set of survey lines and move at a speed of around 4.3 knots.
|
# |
Vessels |
IMO # |
Call Sign |
Designations |
|
1 |
Normand Tonjer |
9422108 |
LAXJ5 |
Mothership – Node Handling |
|
2 |
Oceanic Champion |
9085211 |
LAJQ6 |
Source Vessel |
|
3 |
Shemarah II LH65 |
9120889 |
MVRR7 |
Chase/Guard Vessel |
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 - 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 7
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 Norway
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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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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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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Captain Field Drill Centre D - location of new wells on seabed
Three new wells have been installed at the Captain Field, Drill Centre E. The well (i.e. xmass tree) height above seabed is approximately 6m. Mud mattress geometry is 6m x 3m x 0.15m (height).
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Rig Move - COSLPioneer in the Captain Field
Please be advised that the COSLPioneer, a semi-submersible drilling rig, moved within the Captain Field from 'Drill Centre E' to 'Drill Centre D' on 14th August 2023. This notice updates the Rig's location and provides the anchor locations at the new location at 'Drill Centre D'.
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Shearwater IWA well (22/30b- 18) - 30" Conductor stump
The Shearwater IWA well has been left in a suspended status with the 30" conductor including a debris cap protruding from the seabed approximately 8ft. This is a snagging risk and vessels are advised to remain a safe distance clear.
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Drilling activity - Valaris 122 at Jackdaw
The Valaris 122 (jack-up drilling rig) will be conducting drilling operations at the Jackdaw field on the 30/2a-JD02, JD03, JD05, JD06 wells. The Valaris 122 will be drilling through the newly installed Jackdaw platform on a four well campaign. The total duration of drilling and completion activities is expected to last approximately 538 days.
Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.
See detailed map on our bulletin website
Rig Move - Shelf Drilling Fortress (Invergordon to Golden Eagle)
Please be advised that the Shelf Fortress heavy-duty jack up drilling rig is planned to move from Invergordon Anhcorage No.10 to the Golden Eagle Field on 16th August 2023. This notice is to provide notification of the planned rig move and anchor positions at final location. This notice will remain live until anchors are recovered.
The Shelf Drilling Fortress will be positioned alongside the Golden Eagle platform with a rig heading of 335.9 degrees. The planned anchor positions are as below:
1. Starboard-Forward: 623 558 E, 6 427 414 N, 850m line length from fairlead
2. Port-Forward: 622 443 E, 6 426 873 N, 850m line length from fairlead
3. Starboard-Aft: 624 075 E, 6 426 308 N, 795m line length from fairlead
4. Port-Aft: 622 991 E, 6 425 783 N, 795m line length from fairlead
See detailed map on our bulletin website
Unmanned Surface Vessel (USV) - Norfolk Coast
Operations of remotely piloted Uncrewed Surface Vessels (USVs) are planned off the Norfolk Coast. Up to four (4) USVs will be mobilised from Lowestoft at any one time, where they will transit to the areas of operation. During the operations, the USVs will be performing a Hydrographic Survey of the areas specified below. Support vessels (MV Elysse MMSI 232019288 & Newlife MMSI 232029166) will escort the USVs.
Support vessels (MV Elysse MMSI 232019288 & Newlife MMSI 232029166) will escort the USVs from the harbour entrance and will then continue transiting towards the survey sites until the area is safe & clear of hazards. Once the survey is complete, the USVs will return to Port, again with a support vessel as an escort.
It is requested that other vessels remain clear, so far as is practicable, during transit & survey operations.
Although the vessel is uncrewed, it is managed throughout the 24-hour operation, piloted remotely using 360 degree cameras and other navigational aids.
The USVs sends real time images and situational awareness data over satellite to a team of operators keeping watch and controlling the vessel remotely 24/7.
Vessel details can be found in the following tables. Up to 4 of the following USVs will be utilised at any one time.
|
Name |
X-04 Uncrewed |
X-16 Uncrewed |
X-17 Uncrewed |
X-18 Uncrewed |
|
MMSI |
232023832 |
232039413 |
232039414 |
232039415 |
|
Length |
4.5mm |
4.5mm |
4.5mm |
4.5mm |
|
Beam |
2.2m |
2.2m |
2.2m |
2.2m |
|
Speed |
3.5knts |
3.5knts |
3.5knts |
3.5knts |
|
Draught |
1.0m |
1.0m |
1.0m |
1.0m |
|
Tonnage |
750kg |
750kg |
750kg |
750kg |
|
Name |
X-20 Uncrewed |
X-21 Uncrewed |
X-23 Uncrewed |
X-24 Uncrewed |
X-25 Uncrewed |
|
MMSI |
232042736 |
232042738 |
232044015 |
232044016 |
232048114 |
|
Length |
4.5mm |
4.5mm |
4.5mm |
4.5mm |
4.5mm |
|
Beam |
2.2m |
2.2m |
2.2m |
2.2m |
2.2m |
|
Speed |
3.5knts |
3.5knts |
3.5knts |
3.5knts |
3.5knts |
|
Draught |
1.0m |
1.0m |
1.0m |
1.0m |
1.0m |
|
Tonnage |
750kg |
750kg |
750kg |
750kg |
750kg |
Safety Precautions
The USVs are equipped with the following to make it conspicuous to other marine traffic:
- AIS;
- Navigation lights & sound signal;
- Active radar reflector;
- Superstructure painted yellow.
Seafarers are asked to avoid contact with the vessel and be aware of the operational area during this period.
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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Apache Diving Operations in the Beryl Area
Apache North Sea will be carrying out diving operations in the Beryl area in late October from the Helix Light Well Intervention Vessel "Well Enhancer"
Diving operations in support of Well works over the following Wells: 9/13a-20b 9/13a-42
9/13c-48
9/13a-60z Vessel will be set-up on DP over each Well for about 15 days
See detailed map on our bulletin website
Rig - Scarabeo 8
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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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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Decommissioning operations - Spirit Energy A-Fields and Ensign Field Decommissioning
Spirit Energy has contracted a Deep Ocean - operated CSV (likely the Normand Jarstein) to undertake further decommissioning activities - the removal of redundant subsea infrastructure - in the A-Fields and Ensign fields, located in the southern North Sea. The fields formerly produced natural gas and condensate.
The activities will take place at the Ann, Alison and Annabel subsea installations, and also at the former locations of the Audrey A, Audrey B and Ensign platforms, and are scheduled to commence during late Q3 2023 and to continue through Q4 2023.
Note that while the jackets and topsides of the Audrey A and Audrey B platforms and the Ensign platform were successfully removed during July 2023, remnant subsea structures exist within the footprint of where each platform jacket formerly stood (awaiting removal by the CSV).
All activities (other than vessel transits) will take place within the HSE-recognised 500 m safety zones that remain established at the former location of each platform, and at the subsea installations.
See detailed map on our bulletin website
Decommissioning Subsea Structures - Athena Field
Removal of items from the seabed as part of field decommissioning
Items to be removed from the seabed by Dive Support Vessel(s) are summarised as follows:
- Athena Riser Base
- Athena Manifold comprising: protective structure, piping & control modules
- All production, water injection and service spools, control & power jumpers, mattresses & grout bags at and between Riser Base & Manifold
- All oil & gas associated debris within the 500m zones of Riser Base & Manifold and within 50m of the flowline corridor
Isolation Valve Structure (IVS) Installation - Wood Supplementary Valve Skid (SVS)
The Wood Supplementary Valve Skid (SVS) workscope will be conducted over two phases in Q3 2023 and Q2 2024, an Isolation Valve Structure (IVS) will be installed from circa 8th August, the DSV will be infield for a period of 4-5 days. The structure is planned to be installed with a centre position of (57' 21' 40.6" N 01' 26' 27.1" E), the as built position will be updated following installation. The structure will be tied into the well and the pipeline in Q2 2024.
The Wood Supplementary Valve Skid (SVS) workscope will be conducted over two phases in Q3 2023 and Q2 2024, an Isolation Valve Structure (IVS) will be installed from circa 8th August, the DSV will be infield for a period of 4-5 days. The structure is planned to be installed with a centre position of (57' 21' 40.6" N 01' 26' 27.1" E), the as built position will be updated following installation (see attached file Wood SVS - Phase 1 Layout which shows the layout at the well with the IVS which will be the status between August 2023 and April 2024). The structure will be tied into the well and the pipeline in Q2 2024 (see attached drawing no. MON-SS-GA-00020-001 for seabed status post installation).
See detailed map on our bulletin website
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 - Erda
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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Valaris 247 MODU at Ravenspurn South Charlie
Please be advised that the Valaris 247 MODU is due to depart from ST3 on Friday 11th August 2023 (dependent on weather), and transit to Ravenspurn South Charlie (RSC) in the Ravenspurn South (UKCS 42/30) field where it will commence Drilling Operations work, with an estimated arrival of Saturday 12th August 2023. The MODU will remain at RSC until 31st December 2023.
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Rig Move - Irish Sea Pioneer
ISP Rig Move Notification. Planned Rig Move from the Hamilton North platform (Liverpool Bay) to the Douglas Wellhead platform(Liverpool Bay)
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.
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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Seismic Survey - Cross Border (Q16 UK)
TGS, in partnership with CGG and SAE will be conducting Seismic operations in the below bounding Area (Q16 UK).The operation will consist of 3 Node handling vessels (NOAR) laying receiver stations at 300m x 50m intervals on a rope on the seabed. And 2 source vessels using seismic airguns towed up to 300m behind the vessel. There will be 2 support vessels in the area at any time. No bottom trawling in the node lay area without prior contact and arrangement with fleet please.
Dates of Operation: 13th June 2023 to 30th November 2023.
| # | Vessels | IMO # | Call Sign | Designations |
| 1 | Sar Fame | 9111759 | C6UL5 | Mothership / NOAR Vessel |
| 2 | Rem Aquarius | 9606704 | C6DZ6 | Second NOAR Vessel |
| 3 | Secor Yangtze | 9659373 | V7UJ9 | Third NOAR Vessel |
| 4 | REM Andes | 9606699 | C6EJ6 | Source Vessel |
| 5 | Sanco Star | 9410313 | ZDIT8 | Source Vessel |
| 6 | Morning Dawn | 8701416 | MHEU3 | Ping / Guard Vessel |
| 7 | Ocean Osprey | 9666962 | ZDSI9 | Crew Change / Supply Vessel |
No bottom trawling in the node lay area without prior contact and arrangement with fleet please.
See detailed map on our bulletin website
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 - 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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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 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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ILI Activation Tool - Snagging Risk
Installation of two ILI Activation Tools on the Main Oil Line (MOL) was completed on 12/07/2023 by a dive support vessel (DSV). The tool is a small structure that will go around the Main Oil Line (MOL) and will remain in place until October 2024. This will be a snagging hazard for nets and trawlers.
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Snagging Risk - Exposed Pipeline - Clair Field
Increased risk of snagging. The pipeline PL3184 and tie-in spool have been dragged out of position by approximately 3m to the west. Several protective concrete mattresses have also been displaced, with one torn into sections – this leaves the pipeline exposed for approximately 25m.
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Bathy Survey - Hewett Field
A bathymetric and morphological survey of the CS area is requested as integration to a new 3D High Resolution acquisition, with the purpose of a thorough investigation of the seabed and sub-seabed features with sufficient penetration and resolution to gather data that are essential for the storage geological containment risk assessment, and to de-risk navigation of seismic acquisition vessels in an area where shallow sand bars are present and potentially migrating.
A bathymetric and morphological survey of the CS area is requested as integration to a new 3D High Resolution acquisition, with the purpose of a thorough investigation of the seabed and sub-seabed features with sufficient penetration and resolution to gather data that are essential for the storage geological containment risk assessment, and to de-risk navigation of seismic acquisition vessels in an area where shallow sand bars are present and potentially migrating.
See detailed map on our bulletin website
Leverett Well Operations
Petrofac Facilities Management Limited have pre-laid 8 anchors at the Leverett well location in advance of the arrival of the Transocean PBLJ semi sub in July. A guard vessel will be in place.
The Transocean Paul B Loyd Junior semi-sumbersible drilling rig will arrive on location around 15th July, hook up to the pre-laid anchors and undertake drilling operations until approximately the end of year. The guard vessel will leave the location on arrival of the PBLJ.
See detailed map on our bulletin website
Brent Subsea Infrastructure Decommissioning Programme - Brent Field
Carrying out Subsea Decommissioning programme in the Brent Field. The Subsea Infrastructure Decommissioning project intends to conduct decommissioning scope on Brent infrastructure in 2023. This will entail decommissioning pipelines/umbilical and power cables (by various methods) and the removal of subsea infrastructure, mattresses, grout bags, and subsea debris.
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Anchor Pre-Lay at Buchan Production template Location
Please be advised that Well-Safe Solutions, on behalf of Repsol Sinopec Resources UK propose to place moorings on the sea-bed at the Buchan Field from 7/07/2023 in advance of the mooring of the Semi-submersible Rig Well-Safe Guardian. The anchors are planned to be in position until December 2023.
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Rig - Well-Safe Guardian
Notice to alert sea users to P&A activity within the Buchan field using the Well-Safe Guardian MODU in Block 21/01 on wells 21/01-6 (B01), 21/01a-7 (B02), 21/01a-9v (B3), 21/01a-11 (B5), 21/01-2z (B6) and 21/01-4 (E&A4)
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Decommissioning - Gawain subsea infrastructure
The HAEVA Jackup Barge will support the decommissioning of the Gawain Subsea infrastructure.
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Drilling - Valaris 121 drilling Earn-1 well
The VALARIS 121 will be jacked up whilst drilling the Earn-1 well. The VALARIS 121 will be jacked up whilst drilling the Earn-1 exploration well. There will be no anchors deployed. There will be a temporary 500 m exlcusion zone in place and a dedicated Emergency Response and Rescue Vessel (ERRV) will be on site throughout the operations.
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Open WHPS roof panels at the 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 - 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 - 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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Rig Location - Ocean Endeavor
The Ocean Endeavor is drilling a development well at the Gannet F location with a 12-anchor spread. The Ocean Endeavor rig will be drilling a development well at the Penguins location at Drill-Centre #7. It has a 12-anchor spread, which extend subsea up to 1.5km from rig centre. The existing pre-lay submission will be retracted once this submission is in place. 2 Wells will be drilled from this location, expected to be concluded in the D50 case 1st October.
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Rig - COSL Innovator
Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.
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Anchor handling operations at Buzzard Northern Terrace Manifold location
Rig (COSL Innovator)on location as of 15th May 2023 at 21:30 hours. Rig anchor handling and cross-tensioning complete at Buzzard Northern Terrace Manifold location at 17th May 2023 at 16:45 hours.
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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 - Shelfdrilling 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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Buzzard NTM Drilling - COSL Innovator
The COSL Innovator will be drilling 2 wells at the Buzzard Northern Terrace Manifold. Expected spud of the first well is expected on 29th May and completions of the second well expected around 23rd November.
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Rig - Noble Reacher
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 - Transocean Enabler
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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Decommissioning/IRM Activities - Central North Sea & Southern North Sea
The CSV Boka Southern Ocean will be completing decommissioning scopes at SNS, Balmoral, Brenda, Huntington and MacCulloch. The DSV Boka Da Vinci will be completing decommissioning activities at SNS, Balmoral, Huntington and MacCulloch, and IRM activities at Joanne, Johnston and Catcher.
The CSV Boka Southern Ocean is due to mobilise in Aberdeen on 25th May 23 to undertake a 194 day offshore campaign to execute the Central North Sea and Southern North Sea Decommissioning Scopes. The vessel will be working at SNS, Balmoral, Brenda, Huntington and MacCulloch 500m safety zones. Throughout the campaign, port calls will be completed to/from Lerwick and Blythe for the waste disposal activities. Upon completion of the offshore campaign, the vessel will demobilise in Peterhead.
The DSV Boka Da Vinci is due to mobilise in Sunderland on 3rd April 23 to undertake a 245 day offshore campaign to execute the IRM and Central North Sea and Southern North Sea Decommissioning Scopes. The vessel will be working at SNS, Joanne, Johnston, Catcher Balmoral, Huntington and MacCulloch 500m safety zones. Upon completion of the offshore campaign, the vessel will demobilise in Sunderland
See detailed map on our bulletin website
Transocean Barents at Benriach
The Transocean Barents rig will be moored at the Benriach location from March 2023 to September 2023. Eight (8) anchors will be deployed up to 2100m from the rig at the locations noted. Vessels are requested to stay clear of the mooring pattern with closest approach 2500m (1.35 NM) from Rig.
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Hazard - Boulder (T22-0938) North of Fulmar
During debris recovery, a large boulder was observed by the ROV. Boulder dimension 3.0m x.1.6m x 0.6m.
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Jacky Field Decommissioning Subsea Structures
Items still on seabed prior to final decommissioning of field.
Items still on seabed prior to final decommissioning of field-
• Rock berm covering conductor stump cement patio.
• 2 x pipeline ends protected with Rock Filter Units
• 1 x Power Cable End
See detailed map on our bulletin website
Decommissioning - Elland Well
This is to decommission two wellhead conductors at the Elland well location using the Normand Jarstein.
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Anchor on pipeline PL2104
Anchor discovered on pipeline during survey activities 17/12/2022. Approx dimensions L3.9M X W2.0m X H1.8m
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Rig Move - Valaris V120 MODU at Talbot
Notice to alert sea users to drilling and completion operations at the Talbot subsea development well location, in block 30/13e, using the Valaris V120 MODU.
The Valaris V120 jackup drilling rig is currently on location at the Jade platform. It is due to complete operations on the current well at the end of January, then move to the Talbot subsea development well location, in block 30/13e, to commence drilling and completion operations on three wells.
See detailed map on our bulletin website