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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 - 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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Geophysical Site Survey work in Block 22/17 Cayley Field



Repsol Resources UK have contracted the Vos Gorgeous survey vessel to conduct geophysical activities, including an ultra high resolution 2D seismic survey of the Cayley field located in block 22/17 in the Central North Sea.


Subject to weather conditions in the next 2 weeks, the vessel is expected to mobilise from Peterhead around the 14th May at the earliest, to commence survey activities around the 15th May. The duration of the survey activity is expected to be completed within 20 days (including an allowance for weather delays).   

 

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Subsea installation - Callanish F6



The DSV Seven Falcon then Boka Da Vinci will be completing subsea installation works within the Callanish Manifold 500m safety zone.


The DSV Seven Falcon then Boka Da Vinci will be completing subsea installation works within the Callanish Manifold 500m safety zone including deployment and installation of spoolpieces for the tieback of the Callanish F6 well.

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Well Plug and Abandonment activities - Sean Romeo 500 MZ



Prospector 1 to move from Sean Romeo Block 49/25 to Great Yarmouth after Well Plug and abandonment activities - move from location 26th May arrival expected 27th May 2024.


The Prospector 1 is a Non-Production Installation (MODU jack-up) which will be cantilevered over the Sean Romeo well bay.

It will be on location approximately 90 days during which time ONE-Dyas will be utilising the Prospector 1 for accommodation and completing plugging & abandoning of the wells on the SEAN Romeo platform. It will be towed to the location by three tugs, pulled into final position on anchors and jacked up (air gapped) as per the rig move and positioning program. A dedicated Emergency Response & Rescue Vessel (ERRV) will guard the 500 m safety zone. The Prospector 1 is equipped with navigational aids and lighting, AIS, radio and 24/7 manned radio room. To prevent confusion it is proposed that Romeo Navigation aids will be turned off, and Prospector 1 navigation aids will be used.  

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Well Intervention Work - Guillemot Field



Seawell well intervention work in the Guillemot field


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Subsea Decommissioning - Miller Platform



Vessel Edda Freya will be carrying out decommissioning activities in the vicinity of the former Miller Platform derogated footings


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Subsea Decommissioning - Miller Platform



MV Dina Star will be carrying out decommissioning activities in the vicinity of the former Miller Platform derogated Footings


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Site and Pipeline Route Survey - Belinda



Pipeline, umbilical route and rig site survey of Belinda location, including 2DHR, ahead of drilling operations. Petrofac will be undertaking a survey using the Gardline Ocean Observer vessel. The survey window begins from 1 March 2024 and lasting approximately 17 days.


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Geophysical Survey - Evelyn



Petrofac to undertake a geophysical survey in the Evelyn field using the Ocean Observer, lasting approximately 2 days.


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Environmental Sampling - Gannet E Field



Petrofac will undertake environmental sampling in the Gannet E field using the Ocean Observer Petrofac, lasting approximately two days.


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Harbour Energy 2024 Geophysical Survey Campaign 2 - Ocean Geograph



Multi-site Geophysical, shallow geotechnical and Environmental survey operations


Ocean Geograph shall mobilise from Leith ~ Monday 27th May 24 (subject ongoing operations and weather) and is engaged to acquire a series of geophysical surveys, route geotechnical data and environmental baselining at various sites throughout the UKCS. Indicative schedule and high level scope detailed below;

 

Johnston E&A Well - Block 44/27-1 - 500m x 500m Debris and Bathymetry survey - 24Hrs Operations ~30th May 24

 

Rita RH - Block 44/22c - 500m x 500m Debris and Bathymetry survey - 24Hrs Operations ~ 31st May 24

 

Viking CCS - Block 49/22 - 49/17 (Victor Gas Field adjacement to Swarte Bank) - ~30 days operations from 1st June 24

           28km Route survey with shallow geotechnical sampling & 2DHR Shallow Seismic Survey 6km x 3.25km area

 

Jamine - Block 30/6 & 30/7a - 1000m x 1000m Debris and Bathymetry survey - ~36Hrs Operations ~1st July 24

 

Armada - Block 30/6 & 30/7a - 1000m x 1000m Debris and Bathymetry survey - ~36Hrs Operations ~3rd July 24

 

Solan - Block 205/26a - Environmental Baseline and Habitat Assessment survey - ~96hrs Operations ~ 7th July 24

 

During acquisition of shallow seismic operations the vessel shall be towing a 1200m streamer, sonar fish and piggy backed magnetometer,  all analogue survey works shall be limited to sonar fish, magnetometer and sub bottom profiler. 

 

During all survey operations the vessel will  be Restricted in her Ability to Manoeuvre (RAM), all vessels are requested to maintain a wide berth during active survey operations and remove any static gear within the planned working areas, ref attached survey line plans.

 

A Fisheries Liaison Officer shall be onboard the vessel and shall notify/liaise as applicable.

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Platform Removal - Anglia NUI Platform



The SSCV Sleipnir will be in field to remove the Anglia NUI platform from approx. 3rd June. The vessel will be protected by a 500 m safety zone.


Anchors will be pre-laid prior to the Sleipnir being on location. Each pre-layed anchor/section of mooring line, will be connected to a pennant buoy, which sits on the sea surface. The anchors and mooring lines will extend outwith the 500m zone.

 

The Heavy lift vessel ROV will be utilised to cut the pipelines PL954, PL955, PL854 & PL855 to allow the platform to be lifted from the seabed. The PWA references for this workscope are 12/W/93  & 7/W/91.

 

The cut pipeline ends will be left protected on the seabed with the existing seabed protection concrete mattresses

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Environmental Baseline & Habitat Assessment Survey - Solan Field



Ocean Geograph shall be performing a Geophysical and environmental Seabed Survey at the Solan Field. Vessel scheduled to perform works between a flexible window from ~29th May through to mid July 24 subject operations. Infield survey operations anticipated to take ~96hrs. Schedule shall be routinely updated.


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Ensco 92 Rig move from Crossans (EIS - Block 110/2B-10) to Katy (SNS - Block 44/19B)



The Ensco 92 MODU rig move notification. Crossans location (East Irish Sea) to Katy Platform (Southern North Sea). Subject ongoing plug and abandonment operations the rig is due to depart from the Crossans well location ~2nd June 24. And shall be towed by two vessels (TBN), tow duration ~ 9days subject weather and operations.   All vessel requested to maintain a wide berth.


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ROV jet trench new power cable - Captain Field



The Grand Canyon III will be infield at Captain to ROV jet trench a new power cable that has been installed between BLPA and Area B.


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Seismic Survey - East Irish Sea



Spirit Energy has contracted the Shearwater GeoServices - operated SW Amundsen survey vessel to conduct a high - resolution 3D seismic survey of the South Morecambe and North Morecambe gas fields, located in UKCS blocks 110/2, 110/3, 110/7, 110/8 and 113/27 of the east Irish Sea. Update 18th April 2024: Vessel in survey area as of 17th April 2024.


The vessel is scheduled to commence mobilisation in Liverpool port as soon as 15th April 2024, to commence survey activities as soon as 20th April 2024, and to complete survey activities approximately 30 days later (including an allowance for weather downtime).

 

Note that the inner area shown is where the seismic survey data acquistion itself will be undertaken. The outer area is where line turns, line run-out, and soft start will take place. This outer area will also allow for the deployment and retrieval of streamers, and provide space for weather standby.

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Penguins FPSO Installation



The FPSO will be towed to field by 3 vessels. Once on location the FPSO will be held in position by the 3 tow vessels whilst the mooring lines are attached by a separate vessel. Once the mooring lines are attached (12 off – 3 clusters of 4) the mooring line catenaries will extend from the FPSO to the mooring anchor locations.


Location of FPSO:

See attached drawing showing coordinates for FPSO centre and Mooring Spread.

 

The through water profile will be as per attached drawing - PRD-SEV-MOOR-94-E-CX-4018-00001-001

The FPSO centre and Mooring extremities can be viewed via attached drawing EP202204200441001

 

Tow Vessels:  Maersk Lifter/Maersk Logger/Maersk Laser

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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 - Noble Resolute (ex Maersk Resolute)



This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.


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Rig - 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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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 also be mobilised to carry out some small construction and IRM activities within field.. (Drawings attached).


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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.

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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

 

 

 

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Rig - Transocean Encourage



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 - 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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Offshore support vessel - Deep Cygnus



Vessel in position for scale squeeze operation


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Wellhead structure on location which could present a hazard to other sea users



The wellhead structure extending above the seabed is a snagging hazard. Note, details are included in FishSAFE


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Rig Move - Ensco 92 to Katy



Harbour Energy plan to move the Ensco 92 Jack-up drilling rig from the Crossan's filed location to the Katy field location to perform abandonment operations on the 44/19b-K1Z platform 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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Metocean Buoys - Victory Development Area



1x metocean buoy and 1x metocean buoy mooring floating in the water column at the Victory development area. Submerged buoy is 18 m above seabed. Note that surface buoy mooring can move up to 150 m around deployment location. Note that moorings are not visible on the surface.


Surface buoy mooring (Western most):

WGS84: Lat: 60° 59.191'N, Long: 001° 53.696'W

Mooring: 3000 kg steel balast with chain

Buoy diameter: 3m

Charcter: Fl (5) Y 20s Colour: Yellow disc

MMSI 992351432

Station name: Shell Victory Wave Buoy WS154

 

Submerged buoy (Eastern most)

WGS84: Lat: 60° 59.324'N, Long: 001° 53.834'W'

Water Depth: 145.9 m

Mooring: 500 kg steel balast with chain

Buoy diameter: 1 m

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Well Operations - Arran Field



Notification of rig operations at Arran field with the Stena Don. Note: The anchors anchors are connected to the rig via mooring lines. The anchors and mooring lines extend outwith the rig 500m zone. Once the rig has left location the anchors still remain


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Victory Field Development Project



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: Nordness - Rockdump - 15th June 2024 until end June 2024.

Vessel: Deep Energy : 8th July 2024  - 25th July  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.

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Environmental Baseline Survey - Scott, Telford & Rochelle



The purpose of the survey is to conduct an Environmental Baseline Survey of the Scott, Telford & Rochelle fields. It is anticipated that the survey will take 33 days to complete. The earliest planned start date of the survey is 18th May 2024 with a latest end date of 20th of June 2024.


This environmental survey will aim to assess the following:

  • The location and size of any cutting piles
  • The sediment chemistry of the cuttings piles and associated faunal community
  • The presence and status of benthic faunal communities
  • Sediment grain size
  • Sediment chemistry (metals, hydrocarbons and organic content)
  • Where relevant, revalidate and compare with environmental data gathering during previous survey

This will be achieved by taking two samples per sampling station using a 0.1m2 Dual van Veen Grab Sampler. The survey will be conducted by the vessel Atlantis Dweller, which is operated by Fugro. It is estimated that the workscope will take a maximum of 33 working days.

 

This survey will also include ROV inspection and MBES of all associated Scott Field Assets.

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Gaupe - Anchor Pre-lay



Anchors and chains pre-installed prior to arrival of rig.


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Geotechnical Survey - Baker Wellsite



The Geotechnical survey vessel “Sylur” will perform seabed surveys at proposed Baker wellsite location. The vessel will set up on and remain static at that location for approximately 3-6 days, depending on weather conditions at the time,  Whilst on location  the vessel will be connected to the seabed, drilling soil core samples, and will be unable to move or manoeuvre its position. 


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Geotechnical Survey - Abbey Wellsite



The Geotechnical survey vessel “Sylur” will perform seabed surveys at proposed Abbey wellsite location. The vessel will set up on and remain static at that location for approximately 3-6 days, depending on weather conditions at the time,  Whilst on location  the vessel will be connected to the seabed, drilling soil core samples, and will be unable to move or manoeuvre its position.   


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Geo Technical Survey - Buchan Horst Field



NEO Energy has contracted the Gardline – Horizon Geobay survey vessel to conduct geotechnical site investigation activities including borehole sampling of the Buchan Horst field, located in UKCS block 21/1 of the Central North Sea.


The vessel is scheduled to commence mobilisation in Aberdeen port as soon as 20th May 2024, to commence survey activities as soon as 22nd May 2024, and to complete survey activities approximately 24 days later (including an allowance for weather downtime).

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Diving Activity - Cleeton and Seven Seas Field



Perenco UK are undertaking diving operations across assets in the Cleeton and Seven Seas fields using the Boka Polaris, earliest start date 15th May, until the 31st May 2024. 


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Plug & Abandonment Operations - 9/08-2 Well



Arrival of the Ocean Patriot to commence P&A operations at 9/08-2 well.


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Geotechnical Investigation - Joelle



Geotechnical investigation consisting of in-situ testing (PCPT/SCPT) with Fugro Quest, to drill and core four geotechnical boreholes to provide an engineering assessment and inform a Site Specific Assessment.


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Geotechnical Investigation - Pensacola



Geotechnical investigation consisting of in-situ testing (PCPT/SCPT) with Fugro Quest, to drill and core four geotechnical boreholes to provide an engineering assessment and inform a Site Specific Assessment.


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Trenching Trial Visual Survey - Brent Field



Prior to the trenching trial an as found visual survey will be conducted by ROV camera to identify obstructions along the trial lengths. A further as left survey visual survey will be conducted post trenching using the ROV camera. Vessel: Grand Canyon III


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PL24 Cut-point Freespan - North Sea



The cut-point of PL24 has become exposed and is protruding significantly from the seabed; approximately 18m long and 6m high. This creates an increased risk of snagging of trawling equipment, or similar, compared to a regular freespan.


The cut-point of PL24 has become exposed and is protruding significantly from the seabed; approximately 6m from the seabed at its highest point and overhanging approximately 18m long from where the line makes contact with the seabed again. This creates an increased risk of snagging of trawling equipment, or similar, compared to a regular freespan.

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Rig - Transocean Norge



This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.


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Rig - Deepsea Nordkapp



This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.


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Rig - 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 - 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 - 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 - 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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Rig Move - PBLJ MODU at NW Seymour



Notice to alert sea users to slot recovery, drilling and completion operations at the NW Seymour subsea 22/05b-15 development well, using the PBLJ MODU.


Harbour Energy plan to move the PBLJ semi-submersible drilling rig from the Callanish subsea development location to the NW Seymour subsea development location to perform slot recovery, drilling and completion operations on the subsea 22/05b-15 development well. Throughout the 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 Crossans



Harbour Energy plan to move the Ensco 92 Jack-up drilling rig from the Millom West platform location to the Crossans field location to perform abandonment operations on the 110/02b-10 subsea 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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Valaris Norway Plug & Abandon of SS well 110-15 6z - Liverpool Bay Area



Valaris Norway will be on site from the 1st Jan in Liverpool Bay, 1400m exclusion zone. P&A of SS well 110-15 6z -  1400m exclusion zone in force 


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Rig move - Irish Sea Pioneer



ISP Rig Move Notification. Planned Rig Move from Lennox Platform ( Liverpool Bay) to Cammell Lairds Birkenhead


This oil & gas drilling rig is moving to this new position. Rigs are protected by a 500m exclusion zone and some may have anchors  extending beyond this zone

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Decommissioning - Chestnut Field Phase 2



Spirit Energy has contracted the Deep-Ocean-operated Normand Jarstein construction support vessel (CSV) to undertake subsea infrastructure removal activities in connection with the continued decommissioning of the Chestnut field, located in UKCS block 22/2a of the central North Sea.


 

The vessel is scheduled to commence her mobilisation in Aberdeen South Harbour as soon as the 10th May 2024, and to commence removals - subject to receipt of all necessary regulatory approvals - as soon at the 11th May 2024. The activities are scheduled to take approximately 33 days to complete.

 

 

 

 

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Well Plug & Abandon activities - Juliet/ Minke & Orca



Carry out DSV barrier testing and frame removal at Juliet and Minke locations from April 2024. Carry out DSV dredging activities at Orca Well in April 2024. (Completed) Carry out Rig P&A activities at Juliet/ Minke & Orca Wells from April through to September 2024.


DSV Boka Polaris to arrive at the Juliet and Minke locations to prove barriers prior to rig intervention.

 

WHPS framework to be cut off by DSV at the Juliet and Minke locations.

 

Open hole dredging activities to be carried out at Orca Well in preparation for rig arrival. (Completed)

 

Drill Rig "Well Safe Protector" to carry out P&A activities at Julient/ Minke and Orca locations.

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Foinaven Buoyant Risers



As per a previous notification (Sep 2022), the Petrojarl FPSO has been removed from the Foinaven field. 13 risers remain on site, with buoyant sections located up to 160m above the seabed. A recent check confirmed riser location and height has not changed, but they remain a snagging hazard. 3 new Statutory Instrument 500m safety zones replace the original FPSO safety zone - visible on Admiralty charts and Fishsafe. The zones fully encompass all buoyant risers, and remaining seabed assets.


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Pre-lay of the Penguins mooring system – Penguins



Pre-lay of the Penguins mooring system consists of installation of lower mooring rope, buoyancy modules, upper mooring rope and upper mooring chain. This installation builds on the mooring piles and ground chains which were installed in Q2/3 2020. Note that during (and following) pre-lay, components of the mooring system will be on the seabed and within the water column and therefore this activity introduces a significant snagging hazard to vessels with downlines (including fishing gear).


Vessels - Maersk Achiever & BB Octopus

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CAN-ductor Install Operations - PX402 and IQ119 well locations West of Shetland



The Siem Stingray vessel will be conducting CAN-ductor installation operations on behalf of bp Exploration Operating Company Limited at the PX402 and IQ119 well locations. The operations will take place within an operational window covering the 4th May - 31st May 2024.


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Rig Move - Seafox 2 to Clipper South platform



The Seafox 2 barge is moving to the Clipper South platform and will be on location from as early as the 10th May 2024.


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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.

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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.

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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.

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Subsea Infrastructure ROV Surveys - MacCulloch



The ROVSV Atlantis Dweller will undertake non-intrusive ROV surveys of the historical subsea infrastructure footprints.


The surveys will consist of the following:

  • Survey of the West Drill Centre 500m Zone
  • Survey of the historical FPSO 500m Zone
  • Survey of the East Drill Centre 500m Zone
  • Survey of the historical mooring routes
  • Survey of the interconnecting product routes (pipelines, umbilicals & flexibles)
  • Survey of the Miller Pipeline Crossing (20" Gas Pipeline - Miller to St Fergus) 
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Freespan BBL Pipeline - Southern North Sea



Fishsafe reportable freespan on the BBL pipeline located in the Southern North Sea. Span is 61m in length.


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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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Environmental surveys at Leman D platform



Ocean Researcher will perform geophysical and environmental surveys around the Leman D platform between 23 May and 15 June. Equipment will be towed behind the vessel or the vessel will be taking seabed samples. 


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Environmental surveys at Carrack QA platform



Ocean Researcher to execute geophysical and environmental surveys on behalf of Shell around the Carrack QA platform. Vessel will be towing equipment behind the vessel or taking seabed samples. Maneuverability is limited


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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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Rigmove - Valaris 121



Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending hundreds of metres outside this zone.


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Rig - Noble Invincible



This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.


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Penguins - Anchor Pre-lay



Anchor pre-lay at penguins prior to MODU arrival.


Install of anchors and chain prior to arrival of MODU 

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Sub-bottom Profiler CHIRP Survey within Triton Area across Blocks 21/23, 21/24, 21/30 and 29/1



An inspection survey will be conducted on Triton Area infrastructure across Blocks 21/23, 21/24, 21/30 and 29/1. Survey activity will be conducted at Guillemot west; Clapham; Pict; Saxon; Gannet E; Bittern; Evelyn; and the Triton FPSO. The inspection survey activity will require 7 days. Surveys include Visual Survey (e.g. ROV / AUV, Drop Camera), Multi-beam Survey and Side-scan Sonar Survey.


An ROV inspection survey will be conducted along the Triton – Bittern water injection pipeline route (Blocks 21/30, 28/5 and 29/1). Equipment used will include a Kraken Robotics Sub-bottom Imager (Chirp system), mounted under the ROV and situated ~ 4 metres above the seabed, using directional projectors to penetrate ~5 m below seabed across the 4.5-12.5 kHz frequency band. This survey activity will require 7 days. The earliest commencement date for the proposed survey programme is 01/05/24 and the latest completion date for the proposed survey programme is 30/06/24.

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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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Subsea Well Plugging & Abandonment - Banff, Kyle, Strathspey, Lyell, Ninian and Columba E Fields



Vessel-based subsea well plugging and abandonment, including the use of explosives for wellhead conductor severance, and recovery of wellheads from the seabed. Activities are to be carried out across the Banff, Kyle, Strathspey, Lyell, Ninian and Columba E fields.


CSV / AHV Island Valiant (c/s JWMY) mobilised on 5th April for a 90-day campaign.

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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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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 permanenty covered with new rock armour.

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3D Seismic Survey - UK Quads 219 & 220 / Norway Quads 6201, 6202, 6203, 6204



Survey vessel Amazon Warrior (Call Sign C6GL4) will be acquiring a regional 3D seismic survey starting 10th May 2024 until 30th September 2024. The vessel will be towing 14 x 8,000m long seismic cables in a east / west direction and will have restricted manoeuvrability. Mainport Cedar (support vessel) and 7 Oceans (scout vessel) will also be in attendance.


Onboard FLO - Contact details TBC

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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.

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Geotechnical Survey - Birgitta Wellsite



The Geotechnical survey vessel “Sylur” will perform seabed surveys at proposed Birgitta wellsite location. The vessel will set up on and remain static at that location for approximately 3-6 days, depending on weather conditions at the time,  Whilst on location  the vessel will be connected to the seabed, drilling soil core samples, and will be unable to move or manoeuvre its position.


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Rig move - Valaris Norway relocation to SS well 13-5



Valaris Norway rig move from SS Well 13-6Z TO 13-5 in Liverpool Bay Area Field. Rig 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 - 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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Habitat Assessment Survey - Isolde blocks 23/26, 23/27, 30/1 and 30/2



NEO Energy has contracted the Gardline – Ocean Geograph survey vessel to conduct an Habitat Assessment Survey of the Isolde licence P2390, located in blocks 23/26, 23/27, 30/1 and 30/2, approximately 244 kilometres (km) south east of Peterhead on the Scottish coastline and 11 km west of the UK/Norway median line


The vessel is scheduled to commence a dual NEO energy campaign mobilisation in Hull port as soon as 29th April 2024, to undertake survey activities at Buchan Horst field and Isolde. Depending on schedule optimisation the Isolde survey could commence survey activities as soon as 30th April 2024 or as late as end of May 2024. Isolde survey activities are approximately 2-3 days (including an allowance for weather downtime). Isolde survey operations will be undertaken within UKCS Block 23/26, 23/27, 30/1, and 30/2 and covers an area of approximately 53 km2.

Within the proposed survey area, it is anticipated that up to 4 stations and 6 transects will be investigated with a digital stills camera and video system.

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Geophysical Survey - Buchan Horst Field



NEO Energy has contracted the Gardline – Ocean Geograph survey vessel to conduct geophysical activities including an ultra high - resolution 2D seismic survey of the Buchan Horst field, located in UKCS block 21/1a of the Central North Sea.


The vessel is scheduled to commence mobilisation in Hull port as soon as 29th April 2024, to commence survey activities as soon as 30th April 2024, and to complete survey activities approximately 20 days later (including an allowance for weather downtime).

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Decommissioned Gas Installation - Hewett 52/5A



Transit of Final Location of Heavy Lift Vessels (HLV) Scaldis Rambiz & Gulliver. Scaldis will start with the removal of the decommissioned gas installation the Hewett 52/5A beginning of May 2024. There will be an HLV located at 52/5A completing the removal of the installation topsides and jacket and will be transiting from the port of Flushing to the location on the 1st of May. The HLV is expected to be on location on the 2nd of May as per the schedule below.


The schedule below provides an overview of the planned works for HLV Rambiz, HLV Gulliver and their supporting vessels for the removal of the 52/5A platform. This schedule does not include possible weather delays.

 

02/05/2024 Arrival of Rambiz with AHT Pegasus to 52/5A field and start of preparation activities 02/06/2024 Arrival of cargo barge Greenbarge 2 together with towing tug Eems Warrior 09/06/2024 Departure of loaded Cargo barge Greenbarge 2 together with towing tug Eems Warrior 11/06/2024 Departure of Rambiz with AHT Pegasus from 52/5A field 14/06/2024 Arrival of HLV Gulliver with AHT Fairplay Nublo to 52/5A field for topside removal activities 17/06/2024 Departure of HLV Gulliver with AHT Fairplay Nublo from 52/5A field with topside in her hooks 22/06/2024 Arrival of HLV Gulliver with AHT Fairplay Nublo to 52/5A field for jacket removal activities 01/07/2024 Departure of HLV Gulliver with AHT Fairplay Nublo from 52/5A field with jacket in her hooks

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Open WHPS roof panels at Murdoch KM 44/22a-10Y Well



The roof panels on the Wellhead Protection Structure (WHPS) at the Murdoch KM location are currently in an open position. The WHPS is within the existing 500m zone.


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Subsea Decommissioning - Western Isles Field Decommissioning Project



Dana Petroleum (E&P) Limited has contracted Boskalis Subsea Services Limited (BSS) for the Western Isles Field Decommissioning Project


The Western Isles Development (WID), operated by Dana Petroleum (E&P) Limited , comprises the Harris and Barra fields and is located in Block 201/24a of the UKCS, 160 km to the East of Shetland, and approximately 500 km North-North East of Aberdeen. BSS will have the DSV Boka Topaz in the TAQA Tern Platform 500m zone to carryout diving operations at the SSIV skid for 5 to 7 days before relocating to the Western Isles worksites for the next 50 days. The CSV Boka Northern Ocean will arrive later in the operations to assit in recovery operations.

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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 - 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 Move - Valaris 123



This oil and gas drilling rig has moved to this new position. Rigs are protected by a 500 m safety zone and some may have anchors extending beyond this zone.


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Rig Move - COSL Pioneer Semi-Submersible MODU



COSL Pioneer - a semi-submersible Mobile Offshore Drilling Unit (MODU) is planned to move from Ithaca Captain Field (Block 13/22a) to Ettrick field (Blocks 20/2a and 20/3a) to perform an abandonment campaign of five wells. The planned Rig move date is on 14th April 2024.


Anchor pre-lay is due to commence Thursday 4th April at the earliest, with the COSL Pioneer due to move to location 1-2 weeks later (current estimate 14th April).

 

The nature of activity involves rig positioning/anchor handling for a well abandonment campaign lasting approximately 183 days for the entire operation. 

 

Precautions taken to reduce impact on shipping and other sea users:

  • Advance notice to other sea users/marine authorities/fishing information services will be provided.
  • A dedicated ERRV will be in attendance, fitted with ARPA Radars and AIS systems and shall perform monitoring of all traffic via a 24-hour lookout on the bridge. The ERRV shall keep records of all logged vessels in the area.
  • The COSL Pioneer will use its navigation lights and warning devices, such as obstruction lights and foghorn, to advise shipping of its presence while on location.
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Decommissioning - Leman 27J



Decommissioning activity will be carried out at the Leman 27J platform between June and September 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. The ERDA Jackup Barge will be interfaced with the installation for the duration of the project.


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Subsea Field Decommissioning - Arthur Field



The Arthur field's three standalone wells will be decommissioned between April and July 2024. The HAEVA Jackup Barge will be on location for the duration of the project, along with one Diving Support Vessel (DSV).


Arthur consists of three standalone wells (A1, A2 and A3) and a manifold. The wells are up to 3km apart, and the manifold is located close to the A1 well. 

 

The HAEVA will move from one well to the next as it completes the plug and abandonment of the well.  The DSV will be utilised to support the pipeline flushing and will move between wells as per operational requirements.

 

The current planned sequence HAEVA rig move and positioning is as follows:

A2 - 17 April 2024

A3 - 25 May 2024

A1 - 14 June 2024

END - 1 August 2024

 

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Apache Forties Charlie Riser Replacement (DSV Boka Polaris)



Apache North Sea intends using the Dive Support Vessel (DSV) Boka Polaris to install a new riser off the East face of the Forties Charlie Platform. The vessel will be working within Forties Charlie platform 500m zone for about 21 to 25 days.


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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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Anchor Spread - Suspended Well 9/08-2



Anchor spread and Rig in place.


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Anchor Spread - Suspended Well 9/08-1



Anchor spread and Rig in place.


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Subsea Construction & Pipelay Activities - Talbot & Affleck Developments



Harbour Energy intends to undertake subsea construction & pipelay works on the Talbot Field Development project between March & September 2024. The Field Development traverses across UKCS Blocks 30/07b, 30/12a, 30/13d & 30/13e. In addition, NEO Energy also intends to undertake subsea construction & pipelay works on the Affleck Field redevelopment project commencing ca. 18th April 2024. The Field Development traverses across UKCS Blocks 30/07b, 30/12a, 30/13c, 30/13d, 30/13e, 30/14a & 30/19a.


Talbot Field Devleopment Project

 

Subsea activities on Talbot will commence 31st March 2024 with diving preparatory works within the Judy Platform 500m safety zone.  This will be followed by the installation of a new 15km long 12”/18” Pipe-In-Pipe Pipeline and Electro Hydraulic Chemical (EHC) Control Umbilical between the Talbot Field and the Judy Platform.  A Survey Support Vessel (SUV) will be used to support pipeline and umbilical lay operations as well as performing the pre-commissioning activities for the newly installed pipeline.  A Trenching Support Vessel (TSV) will be used to plough and backfill the pipeline and umbilical.  On completion of pipelay and trenching activities, a rock dump vessel will perform spot rock dump activities along the pipeline and umbilical route and at the existing pipeline crossing locations. 

 

A subsea manifold structure (Talbot DC1 Manifold) will be installed at the Talbot field location using a Construction Support Vessel (CSV).  The CSV will also install a further subsea structure (Talbot SSIV Manifold) within the Judy Platform 500m safety zone. 

 

A Dive Support Vessel (DSV) will perform the tie-ins of the newly installed pipeline and umbilical at the Talbot DC1 Manifold location and within Judy Platform 500m safety zone. The DSV will also support the commissioning of the pipeline and umbilical. 

 

All vessels will be transiting back and forth between the Talbot and Judy locations numerous times during the construction phase.

 

Affleck Field Developmentv Project 

 

Subsea activities on Affleck will commence circa 18th April 2024 with a new 21km 8”/12” Pipe-In-Pipe Pipeline to be laid between the Affleck Manifold and the Talbot Field DC1 Manifold, and a new 36km Electro Hydraulic Chemical (EHC) Control Umbilical to be laid between the Judy Platform and the Affleck Manifold.  In support of the pipelay and umbilical lay there will be a survey support vessel and two Trenching vessels, one to plough and backfill the pipeline and one to jet trench the EHC Umbilical.  The survey support vessel will also be performing the pre-commissioning activities for the newly installed pipeline.  The vessels will be transiting back and forth between these locations numerous times during the construction activities.

 

A Dive Support Vessel (DSV) will be performing the tie-ins of the newly installed pipeline and umbilical at the Affleck Manifold Location, the Talbot DC1 Manifold location and within Judy Platform 500m zone.  The DSV will also support the commissioning of the pipeline and umbilical.

 

On completion of pipelay and trenching activities a rock dump vessel will perform spot rock dump activities along the pipeline and umbilical route and at the existing pipeline crossing locations.  The rock dump activities are currently split into two separate scopes.

 

The earliest start date for Affleck operations to commence is 18th April 2024 with the operations expected to last until the end of September.

 

Key Co-ordinates

 

Key location co-ordinates are given in this bulletin.  Also, please refer to the attached marked-up Admiralty Charts.  

 

There are established 500m safety exclusion zones at all of these locations.   Construction vessels will be operating both within and between all of the above mentioned 500m safety zones during the construction phase.  All mariners are advised to remain clear of these locations until construction operations are completed.

 

Vessel Details

 

The combined Talbot and Affleck operations will be undertaken from the following vessels:

 

Operation

Vessel

Call Sign

Dates in Field

Dive Support Vessel (DSV) – Talbot Preparatory Works

Deep Arctic

C6XW3

March / April

Survey Support Vessel (SUV)

Olympic Triton

LADM3

April / May / June

Talbot & Affleck Pipeline Installation Vessel

Deep Energy

C6YL2

April / May

Construction Support Vessel (CSV) – Talbot Umbilical and Structures Installation

North Sea Atlantic

LAYS7

May

Affleck Umbilical Installation Vessel

Deep Energy

C6YL2

July / August

Talbot & Affleck Pipeline Trenching Vessel (TSV)

Normand Drott

LDRO

May / June

Affleck Umbilical Trenching Vessel (TSV)

Grand Canyon III

LACJ8

August

Dive Support Vessel (DSV)

Deep Arctic

C6XW3

July / Aug / Sept

Rockdump Vessel (FFPV) Pipeline

Nordnes (TBA)

PHOG (TBA)

June

Rockdump Vessel (FFPV) Umbilical

Nordnes (TBA)

PHOG (TBA)

September

Guard vessels

Various

Various

April to Sept

 

 

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Structure in situ - Leverett CAN



Leverett CAN-basic left in situ until it is recovered by a vessel in June 2024. 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 in June.


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Pipeline survey - Birgitta and Montrose platforms



Survey of pipeline route between Birgitta and ETAP and Birgitta and Montrose platforms. The proposed survey operations will be undertaken along the centre of the two routes, and within a 2km by 2km box surrounding the proposed Birgitta well locations. The greater working area (including line turns) is a 3km boundary surrounding the total survey area is anticipated to be approximately 208 km2


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Subsea Recovery - Victoria Wellhead Protection Structure (block 49/17a)



Following wet store of the Victoria wellhead protection structure (WHPS) (area of approx. 25m x 25m), and on behalf of the Licence Operator (NEO Energy), the WHPS will remain in situ and now be recovered by Offshore Construction Vessel (name & call sign is TBC), during April 2024. (Further update will be provided later in Q1 2024). Guard vessel, GV Jacoba (call sign GCVA) will be on location during this time.


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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 - 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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Clair CRX Geophysical Survey



Multi role Survey Vessel "Fugro Venturer" shall acquire geophysical survey and shallow geotechnical investigations south / southwest of Clair Ridge Platform as per the Greater Working Area.


Geophysical survey comprises the following plus transits from / to Aberdeen

1. AUV survey, whereby the AUV flies at around 15m above seabed along programmed lines and the vessel follows the same track above the AUV (10 days work including weather)

2. High res Seismic survey comprising a single streamer of 700m length towed at 3m depth and fitted with a tailbuoy with light and radar reflector (10 days work including weather)

3. Very high res Seismic Survey comprising 4 x 70m length streamers towed immediately behind the vessel, this work is mostly close to Clair Ridge Platform (10 days work including weather) 

4. After a Port Call in mid May the vessel will then acquire shallow Geotechnical CPT and Vibrocore sampling within the working area (approx 14 days work including weather)

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Ground Moorings - Schiehallion North West



Eight mooring ground chain and pennant sections 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 - 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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Drilling Activity - COSL Innovator at Bittern B1 - ST#1



The COSL Innovator (semi-submersible) will be conducting drilling operations in the Bittern field on the B1 - ST#1 well. 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.


Rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone. Location of anchors and COSL Innovator have been included. 

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Tern - Subsea Infrastructure Disconnection



Dive Support Vessel (DSV) work shall be ongoing at and around Tern Alpha platform and satellite fields. The DSV shall be carrying out works to flush and disconnect subsea pipelines at Kestrel Falcon, Hudson and Cladhan subsea fields.


Work shall commence at or proximate to the following locations:

 

Location

Northing

Easting

Tern Alpha

 

 

Platform

61° 16’ 31.82”

00° 55’ 03.83”

Kestrel

 

 

P1 XT

61° 18’ 34.47”

01° 02’ 30.64”

P2 XT

61° 18’ 35.25”

01° 02’ 31.83”

W1 XT

61° 18’ 35.67”

01° 02’ 34.70”

Falcon

 

 

P1 XT

61° 19’ 50.04”

00° 59’ 28.06”

Hudson

 

 

Hudson Manifold

61° 15’ 08.28”

00° 44’ 01.58”

L1 XT

61° 15’ 37.14”

00° 42’ 26.83”

L2 XT

61° 15’ 36.73”

00° 42’ 26.38”

Cladhan

 

 

Cladhan Manifold

61° 08’ 52.59”

00° 47’ 09.03”

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Surveys at the UMC and Pelican Field



Surveys at the UMC and in the Pelican Field are proposed to comprise of geophysical surveys, with a survey area expanding over 4.12 km x 4.10 km for the Pelican Field and 4.16 km x 4.03 km for the UMC. The surveys will acquire SBES (single beam echosounder), MBES (multibeam echosounder), HMP (hull mounted sub bottom profiler), SSS (side scan sonar), and magnetometer data.


Surveys at the UMC and in the Pelican Field are proposed to comprise of geophysical surveys, with a survey area expanding over 4.12 km x 4.10 km for the Pelican Field (Figure 2.1) and 4.16 km x 4.03 km for the UMC.

Geophysical data acquisition will include SBES, MBES, HMP, SSS, and magnetometer. The acquisition of geophysical surveys in the NNS is expected to commence in Q2 of 2024, and will include:

A total mobilisation of 24 h;

A total geophysical acquisition of 20 days, based on:-

          UMC including approx. 208 survey kms / 53 lines turns / 2.6 days

          Hudson including approx. 339 survey kms / 65 lines turns / 3.8 days

          Otter including approx. 208 survey kms / 53 lines turns / 2.6 days

          Cladhad including approx. 208 survey kms / 53 line turns / 2.6 days

          Pelican including approx. 208 survey kms / 53 line turns / 2.6 days

          Falcon and Kestrel approx. 548.6 survey kms / 83 line turns / 5.8 days

and A total demobilisation of 12 hours.

The line spacing for the Pelican Field and the UMC will be 100 m for main lines (with additional lines through well locations) and 400 m for cross lines.

The seabed and shallow soils survey areas have been designed to allow a minimum of 2 km distance away from any well location in any direction.

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Survey at Otter Field



Proposed geophysical surveys of the Otter Field will cover a survey area of 4.02 km x 4.01 km.


Proposed geophysical surveys of the Otter Field will cover a survey area of 4.02 km x 4.01 km.

The surveys will acquire SBES, MBES, HMP, SSS, and magnetometer data. The acquisition of geophysical data in the NNS is expected to commence in Q2 of 2024, and will include:

     A total mobilisation of 24 h;

     A total geophysical acquisition of 20 days, based on

               UMC including approx. 208 survey kms/53 lines turns/2.6 days

               Hudson including approx. 339 surveys kms/65 lines turns/3.8 days

               Otter including approx. 208 survey kms/53 lines turns/2.6 days

               Cladhad including approx. 208 survey kms/53 line turns/2.6 days

               Pelican including approx. 208 survey kms/53 line turns/2.6 days

               Falcon and Kestrel approx. 548.6 survey kms/83 line turns/5.8 days;

     A total demobilisation of 12 hours.

The line spacing for the Otter Field will be 100 m for main lines (with additional lines through well locations) and 400 m for cross lines. The seabed and shallow soils survey areas have been designed to allow a minimum of 2 km distance away from any well location in any direction.

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Survey at Hudson, Falcon, Kestrel and Cladhan



Surveys in the Hudson Field, Falcon Field, Kestrel Field and Cladhan Field are proposed to comprise geophysical surveys, with a survey area expanding over 5.46 km x 4.86 km for the Hudson Field, 6.80 km x 6.30 km for the Falcon Field and Kestrel Field, and 4.04 km x 4.03 km for the Cladhan Field.


Surveys in the Hudson Field, Falcon Field, Kestrel Field and Cladhan Field are proposed to comprise geophysical surveys, with a survey area expanding over 5.46 km x 4.86 km for the Hudson Field, 6.80 km x 6.30 km for the Falcon Field and Kestrel Field, and 4.04 km x 4.03 km for the Cladhan Field. 

 

These surveys in the Hudson, Falcon, Kestrel and Cladhan Fields, are part of a wider geophysical surveys campaign in the NNS. Geophysical data acquisition will include SBES, MBES, HMP, SSS, and magnetometer. The acquisition of geophysical surveys in the NNS is expected to commence in Q2 of 2024, and will include in total:

     A total mobilisation of 24 hours;

     A total geophysical acquisition of 20 days, based on:

               Underwater Manifold Centre (UMC) including approx. 208 survey kms / 53 lines turns / 2.6 days

               Hudson including approx. 339 survey kms / 65 lines turns / 3.8 days

               Otter including approx. 208 survey kms / 53 lines turns / 2.6 days

               Cladhan including approx. 208 survey kms / 53 line turns / 2.6 days

               Pelican including approx. 208 survey kms / 53 line turns / 2.6 days

               Falcon and Kestrel approx. 548.6 survey kms / 83 line turns / 5.8 days; and

     A total demobilisation of 12 hours.

The line spacing for the Hudson Field, Falcon Field and Kestrel Field, and Cladhan Field will be 100 m for main lines (with additional lines through well locations), and 400 m for cross lines. The seabed and shallow soils survey areas have been designed to allow a minimum of 2 km distance away from any well location, in any direction.

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Rig - Noble Integrator



This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.


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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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Light Well Intervention Vessel Project - Bruce Field



Serica Energy (UK) Ltd (Serica) are looking to perform a well intervention campaign on the Bruce phase two Western Area Development (WAD) and Keith gas condensate fields. It is planned that using the Helix Well Enhancer Light Well Intervention Vessel (LWIV) will perform well intervention services at wells Bruce WAD 9/08a-B6(M5), (possibly) 9/08aB3Z(M4) and Keith 9/8a-K01(K1) (formerly 9/8a14).


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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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Subsea Decommissioning - Banff & Kyle



DeepOcean vessels will be completing subsea decommissioning activities, including rock placement, at the Banff and Kyle fields, adjacent to the decommissioned Curlew field and adjacent to the CATS T5 location. Scopes are to be carried out mainly inside existing subsea 500m Safety Zones, but some scopes will be completed out-with these zones.


CSV Normand Jarstein is due to mobilise on 28th March for a 38-day campaign of decommissioning work.

CSV Dina Star is due to mobilise on 8th May for a 23-day campaign

CSV Normand Jarstein is due to mobilise on 16th July for a 61-day campaign

CSV Edda Freya is due to mobilise on 25th September for a 5-day campaign

FPV Stornes is due to mobilise for subsea rock installation mid-April for a 14-day campaign, and again in October for a 14-day campaign.

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Safety Zone position: "Clair Tee, Magnus EOR Development" (CORRECTION)



Please note that FishSAFE information for plotter systems and FishSAFE Alarm Units for the "Clair Tee, Magnus EOR Development" Safety Zone IS CORRECT. A notice from Wednesday 1 November 2023 stating otherwise, has been found to be incorrect. To confirm, the information on FishSAFE is correct and the centre of the safety zone is as below:


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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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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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Ocean Endeavor Anchor Spread - Penguins - Pan NW



The Ocean Endeavor will be drilling a development well at Pan NW at the Penguins field, Northern North Sea. This will have 12-line mooring spread, extending out up to 1.5km from rig positioning. The activity will last ~3months from March through to June.


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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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Decommissioning/IRM Activities 2024 - Central North Sea & Southern North Sea



The DSV Boka Da Vinci will be completing decommissioning activities at SNS, Murdoch/CMS III, Johnston , Balmoral and MacCulloch, and IRM activities at Callanish. The Boka Polaris will be undertaking IRM work at NW Seymour


The DSV Boka Da Vinci is due to mobilise in Sunderland on 1st March to undertake a 220 day offshore campaign to execute the IRM and Central North Sea and Southern North Sea Decommissioning Scopes. The vessel will be working at SNS, Johnston, Murdoch, Balmoral, and MacCulloch 500m safety zones. Upon completion of the offshore campaign, the vessel will demobilise in Sunderland.

 

The Boka Polaris will mobilise circa 26th March for a 7 day scope at NW Seymour.

Se et detaljert kart på vår bulletin-webside

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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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Rig - Maersk Innovator



This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.


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Rig - 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 - 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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New Wells on Seabed - Captain Field Drill Centre D



Three new wells have been installed at the Captain Field, Drill Centre D. The well (i.e. xmas tree) height above the seabed is approximately 6m. Mud mattress geometry is approximately 6m x 3m x 0.15m (height).


Drawing 'CP1913-7000-D101' details concrete mattress. 

Drawing 'CER-PGEN-TEC-LAY-TEC-0000-00004-00_K02_1' details 3 new wells and their coordinates. 

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Subsea Decommissioning - Durango



The Durango subsea well and associated infrastructure will be decommissioned between July and September 2024. The HAEVA Jackup Barge will be on location to facilitate the decommissioning activity.


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Valaris V121 over Shearwater Alpha



Valaris V121 MODU jack-up rig will be situated over Shearwater Alpha platform. Duration Valaris V121 MODU will be on location estimation 730 days.


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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 Move - Noble Intrepid at Judy



Notice to alert sea users of the planned location of the Noble Intrepid jack-up MODU alongside the Judy production installation in block 30/7a.


The Noble Intrepid jack-up MODU will be locating alongside the Judy production installation in block 30/7a to provide accommodation and perform well intervention work.

Se et detaljert kart på vår bulletin-webside

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