Menu
Search
Filters
Close
Menu

97472 CATHODIC PROTECTION UPGRADE OF THE COGNAC PLATFORM 1,050’ WATER DEPTH

Picture for 97472 CATHODIC PROTECTION UPGRADE OF THE
Available for download
Product Number: 51300-97472-SG
ISBN: 97472 1997 CP
Author: A. D. Goolsby, D. P. McGuire
$0.00
$20.00
$20.00
This paper reports the steps of a cathodic protection upgrade of a three year old deep water platform (the Cognac structure, Mississippi Canyon 194A) installed in 1977/78. These steps include obtaining results from an ROV survey, using the survey data to calculate added currents needed to upgrade cathodic protection of the platform, achieving retrofit anode installation using then novel methods, and following-up with CP surveys showing the success of the upgrade. We calculated that 3,100 amperes of additional current applied at depths from 250’ to 1,050’ feet (76 m to 320 m) would be needed to achieve fill cathodic protection of the well conductors and jacket of Cognac. Approximately 1100 additional aluminum anodes were installed during the early 1980’s, using two novel installation methods. Installed cost was estimated at $5.4MM. Potentials since the time of the upgrade have been very satisfactory. Key Words - Cathodic protection upgrade, Cognac platform, Retrofit, Anode carrying members, Cathodic protection under-design, Gulf of Mexico
This paper reports the steps of a cathodic protection upgrade of a three year old deep water platform (the Cognac structure, Mississippi Canyon 194A) installed in 1977/78. These steps include obtaining results from an ROV survey, using the survey data to calculate added currents needed to upgrade cathodic protection of the platform, achieving retrofit anode installation using then novel methods, and following-up with CP surveys showing the success of the upgrade. We calculated that 3,100 amperes of additional current applied at depths from 250’ to 1,050’ feet (76 m to 320 m) would be needed to achieve fill cathodic protection of the well conductors and jacket of Cognac. Approximately 1100 additional aluminum anodes were installed during the early 1980’s, using two novel installation methods. Installed cost was estimated at $5.4MM. Potentials since the time of the upgrade have been very satisfactory. Key Words - Cathodic protection upgrade, Cognac platform, Retrofit, Anode carrying members, Cathodic protection under-design, Gulf of Mexico
PRICE BREAKS - The more you buy, the more you save
Quantity
1+
5+
Price
$20.00
$20.00
Product tags
Also Purchased
Picture for 99357 NORTH SEA PLATFORM CATHODIC PROTECTION
Available for download

99357 NORTH SEA PLATFORM CATHODIC PROTECTION - A PERFORMANCE VS DESIGN REVIEW

Product Number: 51300-99357-SG
ISBN: 99357 1999 CP
Author: B.R. Ridd, D.M.E.Queen, F. Bjornaas and H.Osvall
$20.00
Picture for 96547 CASE HISTORIES OF OFFSHORE PLATFORM
Available for download

96547 CASE HISTORIES OF OFFSHORE PLATFORM CATHODIC PROTECTION RETROFITS

Product Number: 51300-96547-SG
ISBN: 96547 1996 CP
Author: Stephen P. Turnipseed
$20.00
Picture for 97475 PLATFORM CATHODIC PROTECTION DESIGN
Available for download

97475 PLATFORM CATHODIC PROTECTION DESIGN IN THE SOUTH CHINA SEA

Product Number: 51300-97475-SG
ISBN: 97475 1997 CP
Author: Ian Rippon
$20.00
Categories
Industry
Recently viewed
Popular tags
View all

Association for Materials Protection and Performance

© AMPP All Rights Reserved.
Membership Terms of Content Use
Contact Customer Support