Evaluation of oilfield corrosion inhibitors by electrochemical impedance spectroscopy (EIS)
Book
·
OSTI ID:70038
- Chevron Petroleum Technology Co., La Habra, CA (United States)
The performance of commercially available oilfield corrosion inhibitors has been evaluated by electrochemical impedance spectroscopy (EIS) in CO{sub 2} saturated 5% sodium chloride solution. The results demonstrate that EIS is a feasible method for ranking oilfield corrosion inhibitor performance, and the inhibitors exhibit inhibition through different mechanisms. EIS can provide information on the inhibited film growth, and generate the parameters which are specific to a particular corrosion inhibition system. It is found that the high breakpoint frequency at 45{degree} phase angle has excellent correlation with the corrosion rate in the inhibited system. The identification of this correlation is significant because there are advantages associated with measuring this parameter. A patent application has been filed for this discovery.
- OSTI ID:
- 70038
- Report Number(s):
- CONF-940222--
- Country of Publication:
- United States
- Language:
- English
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