Subsea Infrastructure News

(Credit: Deep Ocean)

Equinor Hires DeepOcean for Subsea Infrastructure and Cable Repairs

Equinor has awarded ocean services provider DeepOcean a frame agreement for marine services covering subsea intervention and repair contingency for subsea pipelines, structures and high voltage cables for both offshore renewables and oil and gas fields.The agreement is valid for four years, with options to extend it for up to four more years.Geographically, the agreement covers work on the Norwegian continental shelf and internationally for planned Equinor work and for contingency work for the PRSI pool members. The PRSI pool consists of 23 energy companies that cover their offshore pipeline and power

© xmentoys / Adobe Stock

Perenco Decommissions Subsea Infrastructure at North Sea Field

Perenco has completed the plug and abandonment of three subsea wells at the Gawain field in the UK Southern North Sea, including the removal of the associated subsea infrastructure.The project was completed without incident, despite the challenging conditions encountered when operating in winter in the Southern North Sea, Perenco said.Perenco worked in collaboration with its specialist contractors and utilizing a jack-up vessel equipped with an air-based diving and ROV spread to allow for rig-based diving.The campaign lasted over 160 days and included over 340 air dives, with the completion of this

(Credit: Harland & Wolff Group)

Harland & Wolff Inks Five-Year Contract with Global Oil Services Company

Harland & Wolff Group has signed a five-year master services agreement for the fabrication of large structures with oil services company supplying subsea infrastructure for global oil and gas developments.Harland & Wolff has received its first purchase order under that agreement to fabricate six subsea structures with a contract value of approximately $3.8 million (£3 million).The order comes from an unnamed client that supplies subsea equipment across major hydrocarbon basins around the globe, according to the company.These highly specialized structures are used in oil and gas platforms

Image courtesy Oceaneering

Oceaneering Freedom AUV Gets a Look for Defense Applications

to the fleet.The Freedom AUV design incorporates a multi-thruster design which provides six degrees of freedom in vehicle maneuverability. With eight independent thrusters, Freedom supports mission success with its ability to conduct low altitude, precision operations in complex, critical subsea infrastructure environments

Siem Helix 1 Vessel (Credit: Helix Energy Solutions)

Helix Energy Extends Decommissioning Contract with Trident

VesselsIn addition, the Helix Producer I (HPI) contract has also been extended by one year, to June 1, 2025.Since 2016, the HPI, a ship-shaped dynamically positioned (DP2) floating production unit, has been located at Green Canyon Block 237 producing oil and gas through the existing Phoenix Field subsea infrastructure.The vessel is designed to produce hydrocarbons and export to shore via pipeline or tanker.“We are pleased to announce that Helix has successfully executed these contract extensions, reflective of improving market conditions and increased demand for Helix’s assets and services

(Credit: Inpex)

McDermott and Baker Hughes Install Subsea Infrastructure at Ichthys Field

Engineering company McDermott and Baker Hughes have completed the installation of subsea infrastructure at the Ichthys liquefied natural gas (LNG) field in northern Australia.The work was conducted for Inpex as part of the contract McDermott and Baker Hughes secured in 2019.The scope of the contract included engineering, procurement, construction and installation (EPCI) of umbilicals, risers and flowlines (URF), a subsea production system comprised of a new 7-inch vertical Christmas tree (VXT) system, all forming a subsea well gathering system (GS4) tied back to the existing Ichthys Explorer central

Volantis vessel and UT-1 trencher (Credit: DeepOcean)

DeepOcean Wraps Up Trenching Job in US Gulf of Mexico

its first job in U.S. waters. The Volantis has been on charter to DeepOcean since 2008."We are thrilled to introduce our UT-1 jet trenching system and the Volantis to the U.S. market.“The UT-1 ensures the integrity and stability of subsea assets, enhancing the overall reliability of subsea infrastructure” said Tony Stokes, president of DeepOcean’s U.S. operation.DeepOcean's UT-1 is a versatile 2,800hp trencher capable of conducting subsea trenching for cables and pipelines up to 46” in diameter. It can trench products in excess of 3 meters deep, in water depths up to

(Credit: TSO)

Italy's TSO Tests Subsea Drone for Marine Geophysical Surveys

autonomous underwater vehicle (AUV) Gavia as part of a collaborative project with U.S. start-up Terradepth.Terna and Terradepth are working together on the Odisseo project, whose aim is to advance the technologies and methods for marine geophysical surveys related to the development of important subsea infrastructure and its security.As part of the Odisseo project, the first offshore tests were conducted near the port of Casamicciola Terme, on the island of Ischia.During geophysical surveying of the seabed, Terna’s technicians were able to test the performance of the Gavia drone, the AUV supplied

Minesto's Dragon 12 tidal energy device (Credit: Minesto)

Minesto’s Utility-Scale Tidal Energy Kite About to Take Off

Swedish tidal energy company Minesto has completed the installation of subsea infrastructure and verified the launch and recovery procedures for the 1.2 MW tidal energy device that will soon be deployed offshore Faroe Islands.The device, dubbed Dragon 12, is about to take off as Minesto wraps up works on the connection of the export cable to the foundation for the device, making the Vestmannasund site ready for power production.Completion of subsea infrastructure included relocating the preinstalled junction box at the end of the export cable into a frame on the foundation to create the plug-and-play

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