Main Links Secondary Links Innovation Overview Stack-View™ Service Sim-Stack® Service Pressure Control by the Hour® Helical Buoyancy™ Riser Technology HOME~ INNOVATION~ HELICAL BUOYANCY™ RISER TECHNOLOGY Helical Buoyancy™ Riser Technology With the focus of providing value to customers through safe and highly efficient operations, Diamond Offshore developed the Helical BuoyancyTM riser technology, which is an innovative solution providing an alternative to adding fairings or strakes to the drilling riser to reduce drag and mitigates vortex-induced vibration (VIV) in high loop current offshore applications. This patented helically grooved buoyancy design can reduce riser deployment and retrieval time by up to 50% and improves safety in challenging environments by eliminating the need for personnel to work below the drill floor to attach separate apparatus. A result of a joint development between Diamond Offshore and Trelleborg Offshore, this technology is now installed on all four of our differentiated drillships currently working in the Gulf of Mexico. It received a Meritorious Engineering Innovation Award in the subsea category, which recognizes technological advances that open new and better avenues to the critical challenges the industry faces. Video: Computational Fluid Dynamics (CFD) model of Helical Buoyancy with “streamlines.” LEGAL SITE MAP PRIVACY CORPORATE PROFILE Diamond Offshore Drilling, Inc. is a leader in offshore drilling, providing contract drilling services to the energy industry around the globe with a total fleet of 15 offshore drilling rigs, consisting of 11 semisubmersibles and four dynamically positioned drillships. LEARN MORE GO ©2021 DIAMOND OFFSHORE DRILLING, INC. ALL RIGHTS RESERVED.