Frontier Deepwater Developments – The Impact on Riser Systems Design in Water Depths Greater than 3,000m Event: Frontier Deepwater Developments – The Impact on Riser Systems Design in Water Depths Greater than 3,000m Date: May 2015 Author: N. Saglar, B. Toleman, R. Thethi The offshore industry anticipates the need for production riser systems in ultra-deepwater fields where water depths are between 3,000m to 4,500m. The development of ultra-deepwater fields leads to many challenges on the selection of the riser concept and in some instances such applications may require extending riser technology beyond its current limits. Consequently, there is a need to understand the feasibility of riser systems in such ultra-deepwater applications and the technology gaps that exist. In ultra-deepwater, long suspended riser lengths will significantly increase the riser weight potentially leading to challenges with offshore installation related to laying vessel capability. High external and internal pressure on the riser will lead to the need for heavy wall pipes. Thick-wall riser pipe will bring about riser design challenges in fabrication of pipes, riser pipe welding, riser hang-off system selection, long-term fatigue design, and fabrication of specialty riser joints. By looking into these challenges, it is very important to select the most appropriate riser concept for the ultra-deepwater fields and understand the current pipe manufacturing limits, enabling technology needed for such systems, and technology gaps considering the critical points mentioned above. This paper addresses the key riser design issues considering wall thickness sizing, top tension, axial dynamics, selection of pipe material, design of key components, and installation issues. This paper evaluates feasibility of a number of production and export riser configurations for ultra-deepwater applications based on existing technology, identifies current technology limits, and determines technology gaps that exist. Methods of advancing the current capability to meet the requirements of frontier deepwater applications are also proposed in the paper. If you would like a copy of this technical paper register to download it (pop-up form). Back to All Technical Papers Services Production & Export Riser Concept Engineering Steel Catenary Risers Top Tensioned Risers Hybrid Risers Flexible Pipes & Risers Corrosion Resistance and Composite Risers Subsea Jumper Spools Subsea Umbilicals Deep Sea Mining Integrity, Life Extension & Monitoring | 2H Offshore Riser Integrity & Life Extension Platform Well Integrity & Life Extension Subsea Wellhead System & Life Extension Machine Learning for Riser Engineering Projects Riser System Digital Twin Drilling Riser Management Riser Monitoring System Engineering Riser Inspection, Maintenance & Repair Anomaly & Incident Engineering Subsea Engineering & Assessment Services Component Detailed Design Offshore Decommissioning Engineering Fracture Mechanics and Engineering Critical Assessment Installation Engineering Mechanical Connectors Offshore Renewable Energy Systems and Qualification Testing System Verification & CVA Well Plug & Abandonment Drilling, Completion & Workover Drilling Risers Subsea Completion & Workover Risers Subsea Wellheads & Conductors Offshore Platform Conductors Well Engineering Minimum Facility Platform Design and Engineering Conductor Supported Wellhead Platforms & CoSMOS Monopile Wellhead Platforms Exploration to Early Production Systems Structural Engineering Services Riser Delivery Management & Systems Engineering Get the latest riser insights! Receive our riser news, published papers and blog posts in your inbox monthly. * This iframe contains the logic required to handle Ajax powered Gravity Forms.