Engineering Bulletin - EB 99009A: Hydraulic Operating Fluid
Engineering Bulletin - EB 99009A: Hydraulic Operating Fluid
Engineering Bulletin - EB 99009A: Hydraulic Operating Fluid
Scope
This engineering bulletin defines the hydraulic operating fluid recommendations by Hydril for application
in blowout preventers (BOP) and control systems. These recommendations are based upon the tests
and findings to date.
Recommendations
Based upon the testing to date by Hydril and others, we have found two hydraulic fluids that seem to
work successfully in the blowout preventers and control systems. They are:
• Houghton Offshore's Stack-Magic 200
• WW Canning's Erifon HD603 HP
Discussion
The recommendations stated above are a result of Hydril's preliminary testing and observations. Some
of the things which need to be considered when selecting a hydraulic operating fluid are: