GRAVITY AIDS PULLING OF SUBMARINE LINE

An 8487 ft long, 42 in. dia submarine pipeline connecting a monobuoy in Quintero Bay, north of Vina de Mar, Chile, with the tank farm of the empresa Nacional de petroleo (Chile) (ENAP) Concor refinery was completed in only for months' work time by assembling three long strings on the tank-farm site 60 ft above sea level, pouring the concrete weight coating at the jobsite, loading each string on railroad bogies, and lowering it down and into the sea under its own weight. Bottom pulling was provided by a Santa Fe-Pomery Inc. barge. The horizontal thrust component of the weight of the pipeline on the inclined railroad launchway was sufficient to overcome sliding friction on the first string. To prevent premature launching and overtaking of the pulling line, it was necessary to provide an unusual amount of holdback force during initial operations. The monobuoy is in 154 ft of water and can accommodate 200,000 dwt tankers. It has two 245 ft long, 24 in. dia underbuoy hoses and two 840 ft long, 20 in. dia floating hoses, each with a 20 x 16 in. reducer and a 150 ft, 16 in. end.

• Availability:
  • 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:
  • Anderson, H V
• Publication Date: 1972-4-10

Media Info

• Pagination: p. 101-103
• Serial:
  • Oil and Gas Journal
  • Volume: 70
  • Issue Number: 15
  • Publisher: PennWell Publishing Company
  • ISSN: 0030-1388

Subject/Index Terms

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

Filing Info

• Accession Number: 00056219
• Record Type: Publication
• Source Agency: American Petroleum Institute
• Files: TRIS
• Created Date: Jul 15 1974 12:00AM