Dubai Petroleum Co. has connected its 500,000 bbl underwater storage tank, the Khazzan Dubai 1, to the first production platform in the Persian Gulf's Fatch field with an 1800 ft, 30 in. dia concrete-coated flow line. Final connections at both ends of the line were made in a very short time and with a minimum of equipment by use of a new device, a bias-flanged coupling, developed by HydroTech Services, Inc. as a modification of its HydroCouple. The new coupling compensates not only for gaps between line sections but also for alignment deviations of up to 20, an optimum angle that would permit the pumping of a pig. The flanges on each half of the coupling are set at a 10 angle; thus, rotation of the two parts permits the coupling to accommodate alignments of 0-20 in any plane. It can also be adjusted longitudinally to accommodate gaps of 0-30 in. between pipe sections. The design of the HydroCouple and some problems encountered in the Dubai installation are discussed in some detail.

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  • Corporate Authors:

    Petroleum Publishing Company

    211 South Cheyenne, P.O. Box 1260
    Tulsa, OK  United States  75221
  • Authors:
    • O'Donnell, J P
  • Publication Date: 1970-3-9

Media Info

  • Pagination: p. 51-53
  • Serial:
    • Oil and Gas Journal
    • Volume: 68
    • Issue Number: 10
    • Publisher: PennWell Publishing Company
    • ISSN: 0030-1388

Subject/Index Terms

Filing Info

  • Accession Number: 00056079
  • Record Type: Publication
  • Source Agency: American Petroleum Institute
  • Files: TRIS
  • Created Date: Jul 15 1974 12:00AM