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Dredging for Subsea 7 in the North Sea
Sales Enquiry
- Supplying pumping equipment to raise the Costa Concordia
- Equipment spreads for Hess South Arne and IVRR
- Supporting Fugro Subsea Services Ltd. with equipment deployment in the North Sea
- Mobilising hydraulic winch package for Technip
- Taqa Harding DSV campaigns
- Dredging for Subsea 7 in the North Sea
- Full back deck provision for Technip IRM campaign
- Subsea 7 - BP West Nile Delta gas development
- Subsea umbilical removal for the Judy platform
- Supporting Bibby Subsea with IRM works
- Pull-in winch package for Technip/Chevron Bangka project
- Supplying hydraulic winch packages for Quad 204 FPSO project
- Installing and commissioning FPSO winch package alongside Bibby Offshore
- Provision of deck and subsea equipment for Hibernia Southern Extension project
- Gryphon Alpha FPSO winch and line monitoring package
- Enabling riser pull-in on the Dunlin Alpha platform
- BP Clair fibre optic installation
- Electrical umbilical pull-in for Callater Field development
- Undertaking preventative winch maintenance for Ensco
- JFO provides bespoke solutions on complex project off the Ivory Coast
- James Fisher Offshore supports Subsea 7 in Gorgon project
- Recovery and reinstallation of Ocean Installer mooring lines
- Nemo Link UXO Investigation
- Lancaster EPS Project
- TechnipFMC Enquest Kraken
- TechnipFMC/Repsol IRM
- Subsea 7 BP Atoll
- Cutting, dredging and recovery demonstration
- Premier Oil Balmoral Abex - Decommissioning
- Safaniya Demolition works
- DeepOcean Ghana, TEN project
- Abrasive Water Jet Cutting Case Study
- Safaniya Jacket Removal
- Seven Kestrel IRM
- Bokor Phase III Redevelopment
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- Well severance UKCS
- *Update* Safaniya Jacket Removal
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- CFE Q1 2021 update
- JFO Life of Field - Riser installation UKCS
- Life of Field update Q2 2021
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- Multistring Conductor Cut and Recovery
- Pipeline cut and recovery, Arabian Gulf
- Jacket Removal, Safaniya, KSA
- Slipover jacket removal from James Fisher Decommissioning
- USA Offshore Wind Farms
- Abrasive cutting trial at National Hyperbaric Centre Aberdeen
- Shore Pull Kingdom of Saudi Arabia
- James Fisher Decommissioning - Gyda jacket decommissioning
- Jacket repair case study
- Installation of flexible risers case study
Dredging for Subsea 7 in the North Sea
Scope of works:
Subsea 7 required dredging to remove rock dump, sandy trench backfill and natural seabed beneath an existing 8” ID flexible pipeline. Suitable clearance was also required to allow the operation of a diamond wire saw to then cut out manageable sections of the pipeline for recovery.
Scope of supply:
- 2 x diamond wire spreads
- 2 x dredge spreads (6" and 10")
- Shared hydraulic power unit (HPU) and control/reeler
- Experienced technicans
The 6" and 10" dredgers were well received by the divers with regards to performance and manoeuvrability although it was noted that the addition of a swivel head on the tiger tail would allow for better handling. Following the client feedback, a new swivel head was designed and built within two weeks of this information being received.