DEPENDABILITY IS KEY TO DEEPWATER CORROSION PROTECTION

During 1967-1970, Shell Oil Co. set 12 stationary platforms in the Gulf of Mexico. Water depths ranged from 236 ft to 373 ft. Because of attractive economics, the structures were cathodically protected with yard-installed impressed-current systems. Flush-mounted PbAg and PbPt high-output anodes (150 amp) were used. Eventually the systems failed. Reinstallation of cathodic protection for the deepwater structures became necessary. After study of several alternatives, the following conclusions and recommendations were reached: (1) Both impressed current and sacrificial-anode systems are technically feasible for cathodic protection of deepwater structures; (2) No significant difference in cost exists between the two systems for reinstallation in deepwater applications; and (3) The sacrificial-anode system is preferred over the impressed-current system for deepwater reinstallations due to the system's greater dependability.

• 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:
  • Bross, H E
  • Burgbacher, J Z
• Publication Date: 0

Media Info

• Features: References;
• Serial:
  • Oil and Gas Journal
  • Volume: 74
  • Issue Number: 27
  • Publisher: PennWell Publishing Company
  • ISSN: 0030-1388

Subject/Index Terms

• TRT Terms: Cathodic protection; Corrosion; Corrosion protection; Offshore drilling platforms; Offshore platforms; Offshore structures; Oil well drilling
• Old TRIS Terms: Marine platforms; Offshore platform corrosion
• Subject Areas: Bridges and other structures; Marine Transportation;

Filing Info

• Accession Number: 00147812
• Record Type: Publication
• Source Agency: Engineering Index
• Files: TRIS
• Created Date: Feb 16 1977 12:00AM