Stride JIP: Steel Risers in Deepwater Environments – Progress Summary Event: OTC Date: May 1999 Author: N. Willis, R. Thethi The STRIDE JIP has performed test initiatives into several areas considered to be crucial to the design of steel catenary risers for harsh, deepwater environments. The following investigations are described: Water-tank testing of a ¼” diameter x 100ft long catenary riser model, looking at response to production vessel motions, in particular the response in the touchdown region for rigid and elastic seabed simulations. Vortex induced vibration tests on riser models 20ft long, 6” in diameter, in simulated currents up to 16.5 ft/s (5m/s – Reynolds 6.7×105 ). Helical straked and bare pipe models were towed at angles of up to 45o to the flow, simulating current flow over non-vertical riser sections of simple catenary and buoyant wave risers. The requirement and effectiveness of strakes on inclined sections was investigated. Vortex induced vibration tests on riser strings 650ft long, 10.75” diameter in simulated currents up to 5.8 knots (3m/s – Reynolds 6×105 ). Helical straked and bare pipe models were towed at angles of up to 75o to the vertical in a Norwegian Fjord between two tugs, continuing the investigation into non-vertical riser response to high currents. If you would like a copy of this technical paper register to download it (pop-up form). All technical papers Share this page Share on FacebookShare on LinkedinShare on Twitter 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 Engineering, Life Extension & Monitoring Riser Integrity & Life Extension Platform Well Integrity & Life Extension Subsea Wellhead System & Life Extension Machine Learning for Riser Engineering 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 and Casing Design 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.