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Carbon Dioxide (CO2) with the present of free water in oil and gas would lead to generation of Carbonic acid. This has been briefly discussed in "CO2 Corrosion in Oil & Gas - Part 1". In this post and "CO2 Corrosion in Oil & Gas - Part 2", there are several articles related to CO2 corrosion.
Since the initial studies by DeWaard and Milliams'(1975), there are many other follow-up studies on the CO2 corrosion phenomena. Many CO2 corrosion models have been proposed and used in predicting CO2 corrosion rate. They are :
DeWaard-Milliams nomograph
DeWaard and Milliams in their earlier studies has prepared a DeWaard-Milliams nomograph which is pretty simple and useful to have quick estimate for CO2 corrosion rate.
(Click to view larger image)
Since the initial studies by DeWaard and Milliams'(1975), there are many other follow-up studies on the CO2 corrosion phenomena. Many CO2 corrosion models have been proposed and used in predicting CO2 corrosion rate. They are :
- Dewaard- Milliam model
- LIPUCOR model by TOTAL
- HYDROCORR model by SHELL
- CASSANDRA model by BP
- NORSOK M-506 model by NTSI
- KSC model
- IFE model
- etc
DeWaard-Milliams nomograph
DeWaard and Milliams in their earlier studies has prepared a DeWaard-Milliams nomograph which is pretty simple and useful to have quick estimate for CO2 corrosion rate.
(Click to view larger image)
Above is an example where the fluid temperature is about 7 degC with CO2 partial pressure of 0.1 bar, the corrosion rate is 0.1 mm/year.
Related Post
Related Post
- CO2 Corrosion in Oil & Gas - Part 1
- CO2 Corrosion in Oil & Gas - Part 2
- What are the concerns related to H2S ?
- Several Concerns in High CO2 Field Development
- How does Supercritical fluid looks like ?
- High Temperature Hydrogen Attack in metal & alloy
- Hydrogen Embrittlement TEST method
- Chlorride stress corrosion cracking and use of correct MOC for seawater
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