Subsea technology

Drilling of subsea wells, procedures and challenges to operation performed from floating vessels. Handling and operation of marine drilling riser, riser margin, positioning of vessel and mooring systems. Overview of alternative solutions for field development. Criteria for selection of subsea solution. Elements of subsea production systems. Guidebase, wellhead, X-Mas tree configuration, manifold and piping systems, downhole and subea pumping and processing systems, control systems for production and well intervention. Methods for well intervention, handling of equipment from floating vessel, requirements for vessel and systems for heave compensating. Well integrity, safety and reliability considerations. Trend and future technology development for subsea completed wells.

Knowledge:
The student should be familiar with:
- System and method of installation, modification and maintenance of subsea wells.
- Various methods of underwater production.
- Components and systems in underwater systems.
- Risk-based analyzes (RBIs) and relevant threats for underwater oil and gas production.

Skills:
The student can perform:
- An evaluation and analyzation of alternative development solutions based on given framework conditions.
- Simple design of wellhead system
- Characterization of corrosion damage and calculation of lifetime of underwater installations.
- Define the requirements for well integrity over the life of the well.
- Assessment of alternative methods for well maintenance.
- Could perform simple risk-based analyzes (RBI) for oil and gas installations on the seabed

Lectures, exercises and self study.

Expected time consumption:
Lectures: 60 hours
Preparation for lectures: 30 hours
Exercises: 50 hours
Self study: 130 hours
Total: 270 hours