MODEL TESTS IN NETHERLANDS INDICATE OPTIMUM CONDITIONS FOR TRENCHING IN SUBMARINE PIPELAYING

A series of experimental studies and model tests conducted by the Mineral Technological Institute, a laboratory run by I.H.C. Holland in Delft, showed that the optimum trenching depth for each run could be obtained at very high towing speed; that a 36 in. dia pipe could be buried to a depth of 39 in. in a single run at a towing speed of 0.5 knots; that a specially designed jetting machine, making a number of successive runs, could embed a pipeline to a depth equal to twice its diameter; that with inadequately designed jetting machines, maximum towing speed is reduced by sharp increases in the forces opposing towing; and that the trench progressively assumes unsuitable dimensions (i.e., it becomes narrower than the diameter of the pipe being buried). The design and operation of the trenching machine used in the tests are discussed in some detail.

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  • Find a library where document is available. Order URL: http://worldcat.org/issn/00301388
• Corporate Authors:

  Petroleum Publishing Company

  211 South Cheyenne, P.O. Box 1260
  Tulsa, OK  United States  75221
• Authors:
  • Morrison, J
• Publication Date: 1970-5-4

Media Info

• Pagination: p. 146-148
• Serial:
  • Oil and Gas Journal
  • Volume: 68
  • Issue Number: 18
  • Publisher: PennWell Publishing Company
  • ISSN: 0030-1388

Subject/Index Terms

• TRT Terms: Construction; Dredging; Pipe laying; Pipelines
• Candidate Terms: Pipe laying ships
• Old TRIS Terms: Pipeline construction
• Subject Areas: Construction; Marine Transportation; Pipelines; Terminals and Facilities;

Filing Info

• Accession Number: 00056153
• Record Type: Publication
• Source Agency: American Petroleum Institute
• Files: TRIS
• Created Date: Jul 15 1974 12:00AM