LINE STRESSES AFFECT MFL DEFECT INDICATIONS

Pipeline-defect measurements by high-resolution magnetic flux leakage (MFL) in-line inspection tools are influenced by bending and line-pressure stresses. Tests conducted on a single 36-in. sample with a machined defect indicate that much further research into this phenomenon is needed to reveal methods for correcting for stress effects. The limited, preliminary tests reported in this article were conducted at Queen's University, Kingston, Ontario, and were supported by the Canadian Natural Sciences & Engineering Research Council and by Pipetronix, Toronto.

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  • Corporate Authors:

    PennWell Publishing Company

    1421 South Sheridan, P.O. Box 1260
    Tulsa, OK  United States  74101
  • Authors:
    • Atherton, D L
    • Dhar, A
    • Hauge, C
    • Laursen, P
  • Publication Date: 1992-7-6

Media Info

  • Features: Figures; Photos;
  • Pagination: p. 81-83
  • Serial:
    • Oil and Gas Journal
    • Volume: 90
    • Issue Number: 27
    • Publisher: PennWell Publishing Company
    • ISSN: 0030-1388

Subject/Index Terms

Filing Info

  • Accession Number: 00623561
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jul 31 1992 12:00AM