Cases
Cases
Who has bought it, and what happened. Key figures first, then the reference list.
29
installations since 1991
5.8M
barrels of water a day, installed capacity
Case · Drilling fluid deoxygenation
Less oxygen
Less corrosion
A Minox Tower removes dissolved oxygen from water-based drilling fluid, cutting corrosion in drill pipe, casing and downhole equipment. Tested at an onshore site in Norway.
Minox Tower lifted into place at the onshore test site, Norway.
[01]
Challenge
Drilling contractors worldwide see heavy corrosion in drill pipe, casing and internal equipment exposed to water-based drilling fluid. Dissolved oxygen is a primary driver.
[02]
Solution
The Minox Tower strips oxygen from the fluid in a specially designed column. The unit handles up to 50 m³/h and can be scaled up for onshore or offshore use.
[03]
Result
Oxygen fell from more than 8,000 ppb to below 60 ppb. Higher inlet oxygen has little effect on outlet performance; the system works where it is hardest, at ppb levels.
water-based drilling fluid
lower corrosion rate at 200 ppb O₂
lower corrosion-related cost
Corrosion figures: reducing dissolved O₂ from 8–10 ppm to 200 ppb cuts the corrosion rate by a factor of about 10. Velocity and temperature also affect corrosion.
Reference list
The reference list
Installed base
Where the systems run
Regions and counts as printed on the Minox reference map of October 2014.
North Sea
10 projects
Gulf of Mexico
7 projects
West Africa
4 projects
Malaysia
2 projects
Canada
1 project
Brazil
1 project
