ASSESSMENT OF AN ANALYSIS OF AN INSTRUMENTED DRILLING JACKUP CONDUCTOR

This paper presents an assessment of some of the results of an internationally funded joint industry project to measure the dynamic behaviour of a drilling conductor run from a large jack-up platform operating in deep water in the North Sea. Three different elevations spanning the conductor were instrumented using environmentally protected strain gauges while the rig was operating. The objective was to gather data for selected storms for subsequent spectral and statistical analyses and to validate finite element analysis of a drilling conductor system. The analytical results showed that for small waves the dynamic amplification was substantial when comparing static and dynamic analytical techniques. However, for large design waves the dynamic amplification was found to be small and the static analytical technique was found to be accurate in predicting environmentally induced loads.

• Supplemental Notes:
  • OTC 94, 26th Annual Offshore Technology Conf; 2-5 May 1994; Houston, Tx, USA. Procs. Vol 2, ppr 7459, p 395 [10 p, 6 ref, 11 fig]
• Authors:
  • Hamel-Derouich, D
  • Robinson, R
  • Stonor, R W
• Publication Date: 1994

Language

• English

Subject/Index Terms

• TRT Terms: Drilling; Dynamic loads; Finite element method
• Uncontrolled Terms: Dynamic response
• Old TRIS Terms: Conductors; Jackup platforms
• Subject Areas: Construction; Marine Transportation;

Filing Info

• Accession Number: 00708699
• Record Type: Publication
• Source Agency: British Maritime Technology
• Files: TRIS
• Created Date: Aug 14 1995 12:00AM