Offshore Technology Research Center - A World Leader in Offshore Technology, Research, Education and Testing

  • Home
  • About Us
    • Mission Statement
    • Contact Us
  • Research
    • Capabilities
    • Current Projects
    • Publications
      • Floating Structures
      • Risers and Moorings
      • Mechanics of Materials
      • Seafloor Engineering and Characterization
      • Subsea Systems
      • Risk/Reliability Assessment and Management
  • Wave Basin
    • Specifications
  • People
    • Staff
    • Researchers
  • Partners
    • Research Sponsors
    • Clients
  • Calendar
  • Search
You are here: Home / Research / Publications / Floating Structures / Assessment of Drilling & Workover Rig Storm Sea Fastenings on Offshore Floating Platforms During Hurricane Ivan / Abstract ASFAP

Abstract ASFAP

Abstract ID#:
ASFDC

 

Report Title:
Assessment of Drilling & Workover Rig Storm Sea Fastenings on Offshore Floating Platforms During Hurricane Ivan – Phase 1 Analysis Report

 

Authors:
E. G. Ward and M. H. Kim, OTRC; J. M. Gebara and N. Ghoneim Technip

 

Report Date:
January, 2007

 

Drilling and workover rigs on Floating Production Systems (FPS’s) are fastened to the decks of offshore structures sea fastenings to prevent movement during hurricanes. Tie-down systems include bolted clamps, weldments, or other mechanical means. During Hurricane Ivan, a number of drilling or workover rigs shifted. These movements were studied and assessed relative to current design philosophy and installation practices, and onboard storm operational practices to ready FPS’s for a hurricane. Results will provide information that can be used to assess any needs to revise tiedown criteria or practices to avoid future damage.

Information was gathered for the FPS’s with rig movement during Ivan. Information was obtained for Horn Mountain (BP), Medusa (Murphy), and Ram Powell (Shell). No information was obtained for Devils Tower (Dominion). An interim report to MMS and an OTC paper summarized the observations and learnings from these rig movements. We were also able to work with the API’s Hurricane Evaluation & Assessment Team (HEAT) and provide input to API Bulletin 2TD, Guidelines for Tie-Downs on Offshore Production Facilities for Hurricane Season, First Edition that was issued in June 2006.

This report describes the analyses for a hypothetical TLP and Spar to further study the loads and failure modes for rig tie-down clamps for drilling rigs during hurricanes. Results tended to confirm the observation from hurricane Ivan, and illustrate that tie-down clamps should be purpose-designed for the functional requirements and motion characteristics the specific FPS.

 


 

[gravityform id=”2″ title=”true” description=”true”]

 

Texas A&M Engineering Experiment Station
Texas A&M University
University of Texas Cockrell School of Engineering

Offshore Technology Research Center
1200 Mariner Drive
Texas A&M Research Park
College Station, TX 77845

Phone: (979) 845-6000

 

About Texas A&M Engineering Experiment Station
Privacy Policy
Web Accessibility
Website Feedback

Copyright © 2025 · Texas A&M Engineering Experiment Station · All Rights Reserved