USE OF SPECTRAL TECHNIQUES FOR OPERATIONALLY FORECASTING VESSEL MOTIONS

An offshore operator's problem with planning upcoming work can be viewed as being threefold: (1) to predict properly wave conditions in advance of occurrence, (2) to estimate the resulting vessel motions induced by the forecast waves, and (3) to evaluate what effects these motions will have on scheduled work. A computerized system is discussed that permits at-sea managers to anticipate best modes of operation in advance and thereby schedule accordingly. This approach employs spectral techniques to forecast motions of vessels induced by the seaway. Use of this system has permitted tighter operational control of semisubmersibles, drillships, and barges.

• Corporate Authors:

  Society of Petroleum Engineers

  6200 North Central Expressway
  Dallas, TX  United States  75206
• Authors:
  • Silveria, W A
• Publication Date: 1980-4

Media Info

• Features: References;
• Pagination: p. 555-562
• Serial:
  • Journal of Petroleum Technology
  • Volume: 32
  • Issue Number: 4
  • Publisher: Society of Petroleum Engineers

Subject/Index Terms

• TRT Terms: Barges; Drilling ships; Dynamic positioning; Motion; Offshore platforms; Offshore structures; Oil well drilling; Semisubmersibles; Ship motion; Spectrum analysis; Water waves; Waves; Weather forecasting
• Old TRIS Terms: Drillships; Platform motions; Production platforms; Wave effects; Wave forecasting
• Subject Areas: Bridges and other structures; Hydraulics and Hydrology; Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00319891
• Record Type: Publication
• Source Agency: Engineering Index
• Files: TRIS
• Created Date: Nov 19 1980 12:00AM