Hybrid Risers 2H Offshore is responsible for many of the hybrid riser systems conceived to date. Designing for different environments and operators has taught us to identify and understand the numerous intricacies and challenges posed by individual projects, meaning that we can reuse the best features to create the most suitable hybrid system for new developments. Our experience with freestanding hybrid risers (FSHRs) began with the design of the Girassol hybrid riser bundle arrangement for Total. This was the first tow-out hybrid riser. Following that, we also designed the single line hybrid riser or Single Line Offset Riser (SLOR™) used on Exxon’s Kizomba A and the more complex pipe-in-pipe or Concentric Offset Risers (COR) used on Kizomba B. All subsequent hybrid riser designs have largely followed the design approach of these pioneering riser systems. More recently, we have been involved in the detailed design of the innovative buoyancy sustained riser system (BSR) for Petrobras, where a submerged tethered buoy provides support for up to 24 hybrid lines. Key Services Riser configuration and sizing Buoyancy tank structural and ballast system engineering Global and local strength and fatigue assessment Specifications for structures, connectors, rigid and flexible riser section Upper and lower assembly detailed engineering Riser base spool configuration definition and detailed design Fabrication and testing support and witnessing Procurement and fabrication management Transportation and installation engineering and analysis Integrity management, monitoring and failure investigation Cost and risk assessment Project Experience Woodside – Relocatable DP FLNG riser system assessment Total – Kaombo detailed engineering of 18 freestanding hybrid risers Petrobras – Buoy supported freestanding hybrid risers for Lula Extremo Sul, Lula Norte, Cascade and P-52 BP – PSVM single line hybrid riser detailed engineering Exxon – Kizomba A and B freestanding single line and pipe in pipe risers BP – GoM containment riser system detailed engineering, delivery and installation Total – Girassol hybrid riser bundle concept engineering and detailed analysis Did you know? The earliest hybrid riser system was installed by Placid in Green Canyon 29 in 1988. The same riser was retrieved and later installed by Ensearch in Garden Banks in 1994. This riser system formed the basis of the hybrid riser bundle arrangement developed by 2H for the Girassol project, installed offshore Angola in 2001. 2H received a technology achievement award from BP for our work on developing this system. Share this page Share on FacebookShare on LinkedinShare on Twitter Services Deepwater Production Systems Riser Concept Engineering Steel Catenary Risers Top Tensioned Risers Hybrid Risers Flexible Pipes & Risers Composite Risers Subsea Flowlines & Jumpers Subsea Umbilicals System Verification & CVA Drilling, Completion & Workover Drilling Risers Drilling Riser Management Subsea Completion & Workover Risers Subsea Wellheads & Conductors Offshore Platform Conductors Platform Well Integrity & Life Extension Well Engineering Well Plug & Abandonment Integrity, Life Extension & Monitoring Riser Integrity & Life Extension Subsea Wellhead System & Life Extension Machine Learning for Riser Engineering Riser System Digital Twin Riser Monitoring System Engineering Riser Inspection, Maintenance & Repair Subsea Incident Engineering Fracture Mechanics and ECA Minimum Facility Platforms Conductor Supported Wellhead Platforms & CoSMOS Monopile Wellhead Platforms Exploration to Early Production Systems Structural Engineering Services Installation Engineering Decommissioning Engineering Riser Delivery Management Component Detailed Design Mechanical Connectors Systems & Qualification Testing Offshore Renewables & Alternative Resources Fixed Offshore Wind Floating Offshore Wind Deep Sea Mining Related PROJECTS Block 31 West Africa Hybrid Risers See all Projects TECHNICAL PAPER Low Cost Field Development using Hybrid Risers See all Technical Papers TECHNICAL PAPER Steel Catenary Jumper for Single Hybrid Riser in Deepwater Applications See all Technical Papers