Subsea facilities

Subsea developments are often the preferred solution for developing oil and gas fields in deep waters, for marginal fields, and for long step-out distances.

Subsea technologies are competitive in terms of cost and carbon footprint, but are under constant pressure to stay cost-efficient and to prove robustness and reliability.

The challenges of managing a global supply chain have made standardization a key theme in recent years. A key challenge for the future is to leverage new technologies for cost-efficient development and operation, while maintaining or improving safety and production availability.

DNV’s history in subsea technology goes back to the early 1970s, and is evidenced by completed projects, significant research, published standards, and recommended practices. By working with key suppliers and operators worldwide we have gained a unique cross-industry understanding of the complexities of subsea tie-backs, specific systems, equipment and components, degradation mechanisms, and integrity. DNV has run several joint industry projects (JIP’s) to address subsea challenges.

Globally, our experts support customers with drilling and well, subsea production systems, subsea power and processing systems, umbilicals, cables and risers.

By combining this experience with our deep expertise in flow assurance and materials, we help asset owners and suppliers address challenges in design and operation. These can include:

Barrier philosophy and integrity
Design analysis and verification
Functional assessment
Pressure containment and structural strength
Material selection and compatibility
Operational loads and fatigue
Structural reliability analysis for remaining fatigue life
System architecture, reliability and operational safety
Lifting, marine operations, and intervention.

DNV can assist with:

Concept and feasibility

Concept selection and FEED to ensure robust decisions – with due consideration of technical solutions, cost and schedule
Establishing standards and technical requirements
General engineering support, decision gate review, and application processes
Risk assessment, management, and mitigation.

Design construction, installation and commissioning

Design verification and interpretation of technical industry standards
Technology Qualification and TRL assessment
Technical expert advice
In-depth knowledge of safety and reliability requirements and performance
State of art solutions for environmental management and performance
Supply chain and fabrication follow-up at manufacturing sites and yards globally.