... Both in-place slug induced riser fatigue and VIV fatigue during pre-laid phases are investigated in this paper for steel lazy wave risers (SLWR) tied back to a deep draft semi-submersible in about 1100m water depth, as part of the full scale engineering study effort for lazy-wave riser design...

... This study summarizes a review of the dissection and post-dissection material testing of a recovered flexible riser with a damaged outer sheath and localized wire corrosion, and the subsequent analytical fatigue assessment of the riser based on findings from that dissection. Flexible pipe...

... fpso floating production system naval architect upstream oil & gas mooring system riser us government operator houston requirement opportunity todd veselis general manager creative execution strategy GLOBAL DECOMMISSIONING CHALLENGES AND OPPORTUNITIES TODD VESELIS GENERAL MANAGER...

... with tapered columns optimizes the cancelation effect of wave force and is able to reduce the heave motion in harsh environmental condition for dry tree applications with top-tensioned risers. This paper will present the topside and hull configuration, tank arrangement and ballasting system, stability...

... risk management texas texas section riser proceedings matrix naval architect draft semi upstream oil & gas pairwise comparison matrix consequence table subsea system comparison matrix criteria criterion field development optimization and planning houston asset and portfolio...

... regarded as uncharted territories and have prompted the industry to deliver safe and reliable solutions. Subsea design for HPHT conditions presents numerous engineering challenges which can limit conventional technology designs. For riser systems, HPHT conditions can require higher than usual pipe wall...

... One of the key design parameters of Flexible Joint as the Top Termination Unit (TTU) of Steel Catenary Riser (SCR) or Steel Lazy Wave Riser (SLWR) is the maximum predicted dynamic angular motion of the flexible joint. It is important for the Flexible Joint rotation angle not to exceed...

.... Because of the shallow water depth, in case of an emergency, dynamically positioned drill-ships and semisubmersibles may have limited watch circles to enable safe disconnection of the riser system from the wellhead. With superior mobility and loading capacity, dynamically positioned drilling vessels...

... asset integrity monitoring. The assets studied include Hulls and Topside Structures (Structural Health Monitoring), Risers (fatigue monitoring on Touch Down Zone and Hang-Off point), Mooring Chains and Turrets (load monitoring by load cells or load shackles), and subsea tiebacks and umbilicals...

... One of the factors affecting offshore drilling uptime is the rig's ability to disconnect the riser in a timely manner in case of a drift-off scenario. A drift-off may occur as a result of complete or partial failure of the Dynamic Positioning (DP) system and the severity of the environmental...

... In order to achieve overall cost effectiveness, all FLNG (Floating Liquid Natural Gas) projects must use large volume of deep sea cold water for their cooling process. This has prompted FLNG projects hanging several risers (about 20 to 30 inch diameter) vertically straight down from the platform...

... dimension drillship drilling equipment elevator operation water depth riser Proceedings of the 19th Offshore Symposium, February 2014, Houston, Texas Texas Section of the Society of Naval Architects and Marine Engineers OVERDRILL : THE ULTRA DEEPWATER DRILLSHIP GIANNI SCHERL NAVAL ARCHITECT...

... established use worth mentioning has been on protection nets to avoid supply boats hitting structural components or risers. The good experience with these applications has made designers and Industry in general more comfortable and we now see the use of fiber ropes spreading to meet new challenges. Examples...

... Project reports and technology forums. This paper takes a critical review of design philosophies for concept selection, and addresses the most important design drivers to integrate Semi-submersible hull and riser tensioners for a system ready for field application. Global performance and motion...

... "market ready". proceedings subsea system houston gom hull efficiency platform texas texas section offshore brazil pc semi payload configuration naval architect th offshore symposium riser upstream oil & gas tensioner Proceedings of the 17th Offshore Symposium, February 2...

... the various main technical issues have been addressed and solved. The system configuration of vessel, turret, mooring and risers are described in detail. Various re-gasification options are explored, and in particular, the mooring and riser system design, and side-by-side LNG offloading to achieve sufficient...

..., using a mini semisubmersible, combined with steel catenary risers. The key to success is to reduce the motions compared to the conventional semisubmersible design, without significantly increasing the cost or complexity during fabrication and installation. mexico steel catenary riser mini semi...

... Hull/mooring/riser coupled dynamic analyses of a tanker-based turret-moored FPSO (Floating Production Storage and Offloading) designed for 6000-ft water depth are conducted in the time domain. Two types of mooring systems (12 chain-polyester-chain mooring lines, called FPSO 6000ft polyester...