Decom Mission

Schlumberger is the world’s largest supplier of technology, integrated project management and information solutions to customers working in the oil and gas industry worldwide.

Employing over 110,000 people, representing more than 140 nationalities and working in approximately 80 countries, Schlumberger provides the industry’s widest range of products and services from exploration and production.

The Schlumberger Integrated Well Abandonment (IWA) service offers an integrated approach to well abandonment—from single-well to multiwell platforms. The IWA service uses the extensive range of Schlumberger technologies and integrates third-party services where appropriate.

Built on years of integrated project management experience, the IWA service encompasses a full scope of well abandonment activities, from engineering and well abandonment design to complete program execution, including removal of conductor pipe.

Sonardyne has been writing the future of underwater technology for over 50 years. We engineer, manufacture, service and support solutions that transform what’s possible in offshore energy, maritime defence and ocean science. We own your challenges and deliver on the promises we make.

Through investment in people, technology and footprint, we have built one of the most capable, dynamic and responsible businesses in the marine technology space. As a vertically integrated company with everything under one roof, we – together with our trusted supply chain and strategic partners – can tackle your subsea project in ways no other solutions provider can.

Subsea 7 is a leading subsea contractor with a long history of safe decommissioning execution, having undertaken its first North Sea project in 2000.

Subsea 7 owns and operates an extensive fleet of over 40 specialist multipurpose support vessels including Diving Support Vessels and Construction Support Vessels with WROV and ROV capabilities for both diving and diverless interventions. Crane lift capacities up to 5000te provides the capability to recover large and heavy subsea infrastructure.

A safety first culture, strong engineering capability, aligned with project management experience enhanced over decades of executing subsea installation and inspection, repair and maintenance (IRM) activities, ensures the timely, efficient and safe execution of any subsea decommissioning workscope.

SPC provides alternative engineering solutions to the global energy industry, supporting the Oil & Gas, Renewable, Decommissioning and Marine sectors. We specialise in the repair, refurbishment, manufacturing, and sale of drilling and Well control equipment. Providing rental of pressure control equipment and the support of competent personnel. Our engineering department provides R&D, design from concept to detailed & draughting, project management, manufacturing, commissioning, and site support are all available as solutions.

SCALDIS is a highly experienced offshore heavy lift contractor and provides services for the oil & gas, renewables, decommissioning, civil and salvage markets. Scaldis specialises in the transportation and installation of offshore structures and the decommissioning of offshore facilities. We have earned a reputation as a solid and reliable partner, providing turnkey and cost-effective solutions in close cooperation with our clients for marine projects.

Scaldis’ expertise covers all the phases of installation and decommissioning projects. Scaldis’ primary focus and core business are the lifting phases and associated activities. Our in-house specialists as well as a well-established supply chain have developed an excellent track record in managing and delivering complex projects in a safe, efficient and timely manner. The experience and diversity of our team enables us to offer innovative tailor-made solutions.
Our multipurpose heavy lift vessels, Rambiz (3300t) and Gulliver (4000t), have a unique two crane arrangement, the two cranes can work independently or be synchronized to provide an unrivalled flexibility in handling structures. Our new build vessel Gulliver possesses all the key assets of the Rambiz. Gulliver also incorporates new developments that further extend the potential of the new crane ship as shown below:

• Upgraded workability;
• Increased lifting capacity and lifting height;
• Fully self-propelled DP2 Vessel;
• Skidding cranes to allow greater flexibility to deck spaces;
• Enlarged deck space;
• Helideck;

In recent years we have successfully executed complex projects including:

• Transport and Installation of Topside and Jacket for the Rampion OWF
• Removal, Dismantling and Disposal of Horn & Wren Platform
• Decommissioning of Thames A Complex
• Installation of KFA and KFBE Gravity Based Foundations and Substations for the Kriegers Flak OWF
• Transport and Installation of Topside for the Norther OWF
• Recovery, Dismantling And Disposal of Orwell, Thurne And Wissey Wellhead Protection Structures
• Engineering, Offshore Removal and Transportation of Vulcan, Viking And Bravo Platforms
• Installation of Topside for the Northwester 2 OWF
• Installation of two Offshore Substations at the Seamade OWF
• Transport And Installation of the Offshore Substation at the Hollandse Kust Noord OWF
… and many more…

Scaldis’ clients include international operators such as Bladt Industries AS, Perenco, Chrysaor E&P Services Ltd., Wintershall, Tullow Oil, Ørsted, RWE, E.ON, Energinet, Fabricom GDF Suez, Kvaerner,…
Certifications: ISO 9001:2015, ISO 45001:2018, ISO 14001:2015, FPAL, IMCA, Achilles Repro, Achilles JQS and Utilities NCE.

Scanmudring’s goal is to be a full-service provider for all services related to seabed intervention and subsea cutting within decommissioning and have personnel with decades of experience for both seabed intervention and subsea cutting operation and design. The goal is to provide a “one-stop-shop” for these services that will save time and money, increase safety and service and working seamlessly with contractor/EPRD for the end client. Our client base ranges from Clients like Equinor, AkerBP, Harbour Energy and most other operators in the North Sea to EPRD- and subsea contractors like Heerema Marine Contractors, Allseas, Boskalis, Subsea7, TechnipFMC, DOF Subsea, AF Gruppen and more.

Scanmudring has an extensive track record in seabed intervention for decommissioning. Using our 40Te Scanmachine (subsea tracked excavator) allows us to work in zero visibility, in strong currents, subsea lifting capacity of 18,8Te and use the most powerful tools available for seabed intervention. Access below mud mats/seabed level for external cutting tools, drill cut removal, hard soil removal (up to 203Mpa track record), grout removal and rock replacement before jack-up installation have been successful in the past.
Scanmudring also has services for soil plug removal, diamond wire cutting, removal of internal obstacles inside jacket legs and more.

Scanmudring has developed a new abrasive cutting system and internal cutting tools together with known suppliers. It has a dedicated cut verification system, designed based on standard abrasive suspension systems and internal cutting tools ranging up to 120 inches.

Scanmudring Abrasive Cutting System (SACS) – the safest, most efficient and advanced abrasive cutting system on the market.

Over the last two decades, digitalisation has been an essential factor within manufacturing and operating various equipment for the Oil & Gas industry. Scanmudring has digitalised all aspects for the full abrasive cutting spread including the Scanmudring Abrasive Cutting System (SACS), HP pumps from Hammelmann, winches, HPPs and several cutting tools for internal- and external cutting.

Scotland’s leading offshore decontamination and decommissioning specialist is celebrating 40 years in business.

Aberdeen-based Scotoil Services began servicing the North Sea oil and gas industry in 1982 and has expanded to develop the country’s premier onshore facility for the decontamination and disposal of redundant exploration equipment.

In 2021 Scotoil, handled over 5,000 tonnes of subsea decommissioning material achieving a 98.9% recycling and reuse rate.

The site in Miller Street is licensed for the removal and disposal of NORM (Naturally Occurring Radioactive Material) waste and has amassed a wealth of experience in Radiological Protection Supervision.

Scotoil general manager Dave Goodwin commented: “In the last four decades we have developed a range of market-leading services that have been essential to the success of North Sea oil and gas exploration.”

“Today, as some parts of the industry wind-down, our decommissioning and decontamination expertise is more relevant than ever and I’m confident our greatly experienced team will continue to play a role in ensuring the sustainable recycling and disposal of exploration assets over the coming decades.”

In 2015 Scotoil was acquired by Tradebe a leading, global company in the environmental and storage terminal sectors.

Kristian Dales, Tradebe UK CEO said: “This is a major milestone for the Scotoil team. As sustainable business practices become increasingly important, their skills and expertise will no doubt continue to be in demand.”

About Tradebe

Tradebe is a leading, global company in the environmental and storage terminal sectors. Tradebe Environmental Services serves various markets including industrial, manufacturing, petrochemical, pharmaceutical, oil & gas, etc. Tradebe employs around 2,500 people worldwide and operates close to 90 facilities across Spain, United Kingdom, United States, France, Germany and Italy.

In the UK we have three divisions: Industrial Services, Healthcare and Radioactive, employing 900 people operating across 21 facilities. Tradebe UK is the leading provider of hazardous waste services within the UK and its customers already include large organisations such as the NDA, MoD and NHS.

Sea2Cradle is a maritime consultancy specialising in responsible ship and rig recycling and related services. We assist owners in ensuring their assets get recycled in a safe and environmentally sound way. This starts with an accurate inventory of hazardous materials, followed by a stringent recycling facility selection process.

Our multinational team consists of highly skilled and experienced professionals in the shipping and offshore industry. During supervision at the recycling and waste treatment facilities, Sea2Cradle superintendents see to it that work is carried out in a safe and environmentally sound way.

Over the past twenty years, we have successfully completed over 180 recycling projects and performed more than 250 inventories of hazardous materials. Our projects vary greatly in size and type, ranging from all kind of ships to offshore vessels, FPSO’s, and rigs.

Seafox is a leading global offshore jack-up company, providing services to support the oil & gas and renewable industry. We own and exclusively manage twelve self-elevating jack-up units. Our customers benefit from our wealth of experience in accommodation & crane support, well testing & workover, transport & installation and decommissioning. Furthermore, Seafox offers temporary accommodation units for offshore locations and on board vessels.

We rely on the combination of our versatile units and the dedication, knowledge and experience of our personnel to ensure safe and successful execution of projects worldwide.