OIS Awarded North Sea Decommissioning Contract By Antrim Energy And Centrica Energy

Offshore Installation Services (OIS), an Acteon company, has been awarded a contract by Antrim Energy to decommission four subsea wells in the central North Sea. The offshore scope of the campaign, which also includes six wells from Centrica Energy, will include complete offshore and onshore project management, vessel charter, equipment and personnel.

Rhodri Davies, OIS president, said, “Since 1996, OIS has successfully completed more than 118 well decommissioning projects without a single lost-time incident. With Antrim Energy and Centrica Energy now involved in our 2015 subsea well abandonment campaign, OIS is currently decommissioning 10 subsea wells within the UK continental shelf. As an enabler of multi-operator campaigns, OIS values collaborations such as this in the decommissioning field and is well suited to working alongside progressive organisations such as Antrim and Centrica.”

The wells, in categories 2.1 and 1, will be abandoned using Acteon sister company, Claxton’s, Suspended Well Abandonment Tool (SWAT). SWAT is a diverless, vessel-based approach and will be completed as part of a multi-operator campaign in summer 2015.

The offshore campaign will be conducted from an anchor-handling tug supply vessel (AHTS), the Island Valiant. During phase one, SWAT will be deployed through the vessel’s moon pool to set cement plugs in the bore and across all the casing annuli. The second phase will use an abrasive severance system for the cutting of the wells and sequential removal from the seabed. This will conclude the offshore operations.

OIS is experienced in orchestrating multi-party collaborations, having planned and executed 17 campaigns involving more than one operator in the North Sea since 1996. The OIS business model enables operators to share project costs and provides a cost-efficient way to decommission suspended wells and comply with UK oil and gas legislation.

About Acteon
Acteon provides a range of global subsea services from surveying, installation, asset integrity management through to decommissioning. Acteon’s companies are 2H Offshore, Aquatic, Claxton, Clarus Subsea Integrity, Conductor Installation Services (CIS), Core Grouting Services, InterAct, InterMoor, J2 Subsea, LDD, LM Handling, MENCK, Mirage Machines, NCS Survey, Offshore Installation Services (OIS), Probe Oil Tools, Pulse Structural Monitoring, Seatronics, Subsea Riser Products (SRP), TEAM Energy Resources and UTEC Survey. Acteon’s companies share knowledge and experience to add value and create effective, tailored solutions for clients across four business segments: survey, monitoring and data; risers and moorings; seabed foundation technologies; and project support services.  For more information, visit www.acteon.com.

About subsea services
Acteon's aim is to define, shape and lead subsea services through best-in-class expertise offering full market coverage across the whole life of a subsea field. Acteon’s integrated approach to subsea services makes it easy for clients to combine capabilities to meet their specific project needs. Acteon’s subsea services companies share knowledge and experience across four business segments to deliver highly efficient solutions tailored to a client’s unique challenges, thereby reducing overall cost, risk and complexity.

Project support services
Acteon provides manpower, project execution strategies, portable machining and cutting equipment, and installation and recovery services to add value and support the delivery of major projects by creating effective, tailored solutions for clients. Acteon offers specialist equipment, including riser systems, installation workover control systems, mooring systems and innovative packaged solutions to align with procurement strategies. The company provides access to the world’s largest modular carousel and modular flexible pipe and universal laying equipment support along with specialist services to reduce capital expenditure and manpower provision to meet project needs worldwide.