DeepOcean Completes Teal West Subsea Tieback for Anasuria in North Sea

DeepOcean has completed subsea construction and tie-in work at the Teal West development on the UK Continental Shelf for Anasuria Operating Company. The field has been developed as a subsea tieback to the existing Anasuria FPSO in the Central North Sea. DeepOcean's scope included installing a flexible production riser, flowline and umbilical, using a remotely operated vehicle and specialised tooling to perform diverless connections and maximise the value of existing infrastructure.

 

Details of the Project

 

DeepOcean has completed a significant subsea project. It finished subsea construction and tie-in work at Teal West. The work was carried out for Anasuria Operating Company. Teal West is located on the UK Continental Shelf. This marks the successful delivery of the subsea scope.

The development uses an established production approach. Teal West is an offshore oil and gas development. It sits in the Central North Sea. The field has been developed as a subsea tieback. It connects to the existing Anasuria FPSO facility.

 

Scope of the Work

 

DeepOcean's scope covered several key installations. It included a flexible production riser and flowline. An umbilical was also part of the scope. These connect the Anasuria FPSO to the Teal West subsea Christmas tree. This infrastructure enables production from the field.

The scope extended beyond installation alone. It included protection of the flowline and umbilical. Commissioning of the newly installed infrastructure was also covered. This comprehensive scope spanned construction through to commissioning. It reflected an integrated approach to the project.

 

Diverless Technology

 

The project used advanced robotic technology. Operations were executed using a remotely operated vehicle. This was combined with specialised tooling. This approach replaced the need for diver intervention. Such tasks traditionally required divers to perform them.

DeepOcean deployed its proprietary tie-in tool. This performs diverless connections for high-pressure flanges. It enables the connection of pipes and valves. This is achieved using subsea robotics. The approach improves safety by removing divers from the operation.

 

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The Field Development

 

The development comprises multiple wells. It includes two production wells and a water injection well. Initially, one production well will connect to the FPSO. This connection uses approximately three kilometres of subsea flowlines. This staged approach begins production from the field.

The location presents specific operational conditions. The Anasuria FPSO sits about 180 kilometres east of Aberdeen. It operates in approximately 90 metres of water depth. These conditions shaped the execution of the work. The subsea tieback links the new field to this facility.

 

Execution and Delivery

 

The project drew on DeepOcean's regional capabilities. Its Aberdeen office led the engineering and project management. This covered the subsea construction and tie-in scope. Local expertise supported the delivery of the work. This reflects the company's established North Sea presence.

Operations followed a phased execution plan. Subsea construction and tie-in activities were completed first. Commissioning followed these initial activities. This was performed by a second offshore construction vessel. That vessel came from DeepOcean's chartered fleet.

 

Significance of the Tieback

 

The project demonstrates the value of subsea tiebacks. Company leadership highlighted their role in maximising existing infrastructure. Tiebacks connect new fields to established facilities. This avoids the cost of standalone infrastructure. It extends the value of existing assets.

The project also carries broader significance. Anasuria framed it as supporting secure domestic energy production. It sustains skilled jobs in the region. It delivers long-term value from the UK North Sea. The collaboration between operator and contractor was central to this success.