When choosing risers for any drilling operation, it is critical to take the time to compare options, features, applications and the experience and expertise of the manufacturer. Not all systems are the same, so reviewing options is time well spent in the early planning stage.
Types of Risers
Different types of subsea riser systems. may be required for platforms. There are specific types which can be used with emergency shutdown systems and include valves and valve control systems to prevent the release of hydrocarbons during an emergency shutdown.
The most common use of subsea riser systems is in the transfer of materials from the floor of the sea to the drilling platform of the vessel as well as in the reverse direction. This material can be any number of elements from hydrocarbons to control fluids or gases as well as injection fluids. Drilling risers will be used to move mud from the floor of the ocean or sea to the surface during the drilling process.
Rigid or Flexible
Both rigid and flexible systems are available for risers, both of which offer a range of advantages or specific applications. With rigid risers, there is always a greater concern about motion. Flexible risers are often the best choice when either vertical or horizontal movement may be a major factor for the job.
The nature of movement on floating platforms or facilities makes flexible subsea riser systems a better option. There is also a greater range of possible configurations possible with the flexible risers, which may be an important factor to consider.
Always consider the reputation and experience of the manufacturing when choosing riser systems. Top manufacturers will work with engineers to ensure the correct configuration for specific drilling platform or floating facility. This ensures the risers selected will be the best for the conditions and the demands of the job.
