New Drilling Riser Damping Model January 2016 2H Offshore has completed drilling riser structural damping tests and developed a new model to improve drilling and conductor fatigue analysis results. As part of our continued focus on technology leadership, 2H has developed and validated a new damping model for drilling risers and conductors that more accurately captures amplitude dependent structural damping. The model can be used to minimise conservatism in drilling riser and conductor fatigue calculations, which is important for confirming that the riser and wellhead system can be operated in a safe and prudent manner. The drilling riser structural damping tests carried out by 2H as part of Deepstar® [Reference: ISOPE 2012-TPC-0149] took place in Fourchon in 2011. The tests measured significant structural damping in buoyant joints, as high as 2.5% to 3%. Typical steel pipe damping is around 0.3%. The damping was also found to increase with increasing test amplitudes. Typical drilling riser damping is modelled using a single damping value, which does not capture the amplitude dependency. /wp-content/uploads/2016/01/2H-Damping-Test-Similation-in-Flexcom_2_1_1_1_1_1.flv Share this page Share on FacebookShare on LinkedinShare on TwitterShare on Google+ Services Production & Export Riser Concept Engineering Steel Catenary Risers Top Tensioned Risers Hybrid Risers Flexible Risers Composite Risers Subsea Jumper Spools Subsea Umbilicals Deep Sea Mining Drilling, Completion & Workover Drilling Risers Completion & Workover Risers Subsea Wellheads & Conductors Platform Conductors Well Engineering Minimum Facilities Platforms Conductor Supported Wellhead Platforms & CoSMOS Riser Delivery Management Riser Monitoring & Integrity Riser Monitoring System Engineering Drilling Riser Management Anomaly & Incident Engineering Subsea Wellhead System & Life Extension Platform Well Integrity & Life Extension Inspection, Maintenance & Repair Subsea Engineering Services Component Detailed Design Decommissioning Engineering Engineering Critical Assessment Installation Engineering Mechanical Connectors Offshore Renewable Energy Qualification Testing Verification & CVA Well Plug & Abandonment Get the latest riser insights!Receive our riser news, published papers and blog posts in your inbox monthly.