HERE ARE TWO RECENT METHODS OF REPAIRING UNDERWATER PIPELINES

Hydrotech Services Inc. has developed two new methods for underwater pipeline repairing: (1) dry-atmosphere welding, carried out by divers inside a gas-filled "habitat" providing high-quality welding, good control, and visibility; and (2) a permanent coupling and seal-device similar to the recently developed HydroCouple, which can be compared with an "overshot" or an oilwell packer turned "inside out". Comparison with other methods of repair in use, such as externally applied clamps, replacement of seals, raising the entire damaged zone to the surface, and complete replacement of the entire line, as well as field testing, indicated the advantages of the new methods in cost savings and in eliminating some operational stages (lifting, replacement, etc.).

• Supplemental Notes:
  • Presented at the ASME Underwater Technology Conference, San Diego, Calif., March 1969.
• Authors:
  • White Jr, B E
• Publication Date: 1969-10

Media Info

• Pagination: 4 p.
• Serial:
  • Oil and Gas International
  • Volume: 9
  • Issue Number: 10

Subject/Index Terms

• TRT Terms: Maintenance; Pipelines; Repairing; Underwater structures
• Old TRIS Terms: Pipeline maintenance; Underwater repairs
• Subject Areas: Bridges and other structures; Maintenance and Preservation; Marine Transportation; Pipelines; Terminals and Facilities;

Filing Info

• Accession Number: 00056083
• Record Type: Publication
• Source Agency: American Petroleum Institute
• Files: TRIS
• Created Date: Jul 15 2004 12:00AM