Corrosivity of fresh water saturated with O2

[Mathp]

Dear all,

Is there anybody who has some reliable sources or who could tell me more about "corrosivity of fresh water saturated with O2" ? All types of information will be welcome, close or open loop, any type of material ...

Thank you in advance, kind regards.

 

[EmmanuelTop]

There are so many documents on the internet. Have you Googled a bit?

http://www.ce.sc.edu/deptinfo/membe...ad/ECIV 303/Corrosion/Set8 WaterCorrosion.pdf

http://www.roscoemoss.com/wp-content/uploads/publications/fmcf.pdf

http://www.corrosion-doctors.org/Cooling-Water-Towers/dissolvedoxygen.htm

http://www.euro-inox.org/pdf/map/paper/Ledion_water_EN.pdf

Dejan IVANOVIC
Process Engineer, MSChE

 

[Mathp]

Thanks, I've already read the 3 first ones but going to read the last. The major "problem" is that it does not speak specifically of oil and gas field.

 

[SurajTinani]

Use Section 2.B.11 of API 581 to calculate corrosion rates in oxygenated waters in open or closed system. The equation to calculate CR as per API 581 is:

CR = CRB x FT x FV where CRB is the Base Corrosion Rate, FT is the Temperature Adjustment Factor and FV is the Flow Velocity Adjustment Factor

There is a very good and detailed explanation on how to get the above values. I have used this equation in the past to carry out corrosion calculations for oxygenated water which were approved by the Client.

Regards,

Suraj Tinani

 

[Mathp]

Thank you so much Suraj Tinani, That's exactly what I needed, now just need to find the paper.

Regards.

 

[SJones]

does not speak specifically of oil and gas field

Why are you asking about "close (sic) or open loop" and then oil and gas field - the two are not usually integrated. What is the specific application? For an oilfield water injection system, a corrosion model that is more appropriate would be Andijani & Turgoose

thread338-249018

http://www.ncbi.nlm.nih.gov/pubmed/14982171

The model applies to metal loss of carbon steel. You also ask about "any type of material" - oxygen with corrosion resistant alloys brings about an increased likelihood of pitting corrosion, crevice corrosion and stress corrosion cracking.




Steve Jones
Corrosion Management Consultant

http://www.linkedin.com/pub/8/83b/b04

All answers are personal opinions only and are in no way connected with any employer.

 

[Mathp]

I'm currently studying the influence of oxygen in different kinds of environment in oil and gas industry : in the case of an oxygen entry into "wet" gaseous phase flow, oil/water flow and in the case of process utilities (in particular the ones with fresh water involved).

Concerning fresh water systems, the data I am looking for are graph or formulas which could directly lead to calculation of the corrosion rate in function of dissolved oxygen content, temperature, oxygen partial pressure, total dissolved solids ... Does it exist ?

Then I've read about the effects of oxygen entry on corrosion mechanisms but I would like to have a value to "set" a limit of how much oxygen is allowable in the systems. That is a really general study but I need some particular values to have a reference.

At the moment data on carbon steel would be more than welcome, then if you have anything else about different materials, feel free to mention it.

Unfortunately I can not access the documents you mentioned but I keep on going.

Thank you for your answers, kind regards.