Vortex-Induced Vibration Seminars for MMS Engineers
OBJECTIVE:
MMS engineers are faced with approving a variety of projects that can be influenced by Vortex-Induced Vibrations (VIV). Examples include deepwater drilling, production, and export risers subjected to strong currents; offshore pipeline spans over irregular bottom topography subjected to strong bottom currents; onshore elevated pipelines subjected to strong winds. MMS engineers need to be aware of the potential for VIV to damage such structures and various options that can be useful in mitigating VIV. Seminars will be developed and delivered to MMS engineers to provide a basic understanding of VIV as well as useful, practical information to evaluate the potential for VIV and mitigation strategies in various proposed projects.
APPROACH:
OTRC will engage recognized experts to develop and deliver a seminar on VIV to MMS engineers at MMS offices. OTRC will be responsible for securing the experts, coordinating the development and delivery of the seminars, and providing seminar materials to the MMS engineers.
ANTICIPATED PROJECT DURATION: 1 year
PROJECT PLAN FOR 2003-2004:
Scope of Work: OTRC will engage recognized experts to develop and deliver a seminar to MMS engineers at MMS offices. Separate sessions will address VIV Fundamentals, Applications to Deepwater Riser, Application to Marine Pipeline Spans, and Application to Onshore Pipelines. The VIV Fundamental session will provide a basic understanding of the phenomena, factors influencing its occurrence, how it can lead to structural damage, and general strategies for mitigation. The three Application sessions will illustrate the application of the VIV fundamentals to various project situations and provide useful, practical information to assess the likelihood of VIV occurrence, its potential impact on design and operations, and mitigation measures that have been used and their effectiveness.
The seminars are envisioned as 2-day sessions delivered at two locations as follows:
MMS Gulf of Mexico office in New Orleans
VIV Fundamentals
VIV: Application to Deepwater Risers
VIV: Application to Marine Pipeline SpansMMS Alaskan office in Anchorage
VIV Fundamentals
VIV: Application to Onshore Pipelines
VIV: Application to Marine Pipeline Spans
VIV: Application to Deepwater RisersThe seminars will be scheduled based on the availability of MMS staff and the VIV experts.
Anticipated Results: Seminar on VIV fundamentals and applications developed and delivered to MMS engineers at two MMS locations.
PRINCIPAL INVESTIGATOR (S) & OTHERS INVOLVED IN PROJECT:
PI: E.G. Ward
Others: VIV experts: Professor Charles Dalton, Mechanical Engineering, University of Houston; R.J. Brown, RJ Brown Deepwater Inc. (part of the Technip Offshore Group); Steven Leverette, Atlantia Offshore Limited; Professor Ashan Kareem, Civil Engineering, University of Notre Dame
Date: December 2003Project Name: Vortex-Induced Vibration (VIV) Seminars for MMS Engineers
TEES Project Number: 32558-65940 MMS Task Order: 74480 MMS Project Number: 485
Principal Investigators: E.G. Ward
Estimated Completion Date: September 2004
Project Description:
MMS engineers are faced with approving a variety of projects that can be influenced by VIV (e.g., deepwater risers, pipeline spans over irregular bottom topography subjected to strong bottom currents, onshore elevated pipelines subjected to strong winds). MMS engineers need to be aware of the potential for VIV to damage such structures and various options that can be useful in mitigating VIV. Seminars will be developed and delivered to MMS engineers to provide a basic understanding of VIV, describe the potential for VIV to occur and how it might damage such structures, and mitigation strategies that might be proposed for various offshore projects.
Progress:
OTRC engaged the following recognized experts to develop and deliver a seminar to MMS engineers associated with the Gulf of Mexico projects and operations:
Professor Charles Dalton (University of Houston)
Dr. Stephen Leverette (Atlantia Offshore)
Mr. R.J Brown (R.J. Brown Deepwater)Separate sessions were developed to address VIV Fundamentals, Applications to Deepwater Risers, and Application to Marine Pipeline Spans. The VIV Fundamental session focused on providing a basic understanding of the phenomena, factors influencing its occurrence, and general strategies for mitigation. The two Application sessions illustrated the application of the VIV fundamentals to various project situations, the potential impact on design and operations, and VIV mitigation measures that have been used. The two-day seminar was delivered to about 25 MMS engineers in the Gulf of Mexico OCS Region in New Orleans on December 2-3, 2003.
A similar seminar will be given to engineers in the Alaska and Pacific OCS Regions. Material will be added to address Applications to Onshore Elevated Pipelines that can be subjected to wind induced VIV. This material will be developed and delivered by Professor Ashan Kareem (Notre Dame University)
This seminar is being scheduled for late spring in Anchorage.
Reports & Publications: Seminar Materials