Experimental Study on the Corrosion Behavior of Produced Fluid on J55 Steel during CO2 Flooding

CO2 flooding has been widely used in oil field development, but the produced fluid is easy to cause corrosion of tubing and casing. In order to determine the corrosion behavior of produced fluid on J55 steel during CO2 flooding, we use the simulated oil well produced fluid as corrosive medium and co...

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Bibliographic Details
Published in:Key engineering materials 2018-07, Vol.773, p.179-183
Main Authors: Tang, Mei Rong, Chen, Rong Huan, Zhao, Jin Sheng, Ju, Ying Jun
Format: Article
Language:English
Subjects:
Corrosion
Corrosion tests
Flooding
High strength low alloy steels
Medium carbon steels
Oil field equipment
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Summary:CO2 flooding has been widely used in oil field development, but the produced fluid is easy to cause corrosion of tubing and casing. In order to determine the corrosion behavior of produced fluid on J55 steel during CO2 flooding, we use the simulated oil well produced fluid as corrosive medium and conduct the corrosion simulation experiment at high temperature and high pressure. The experimental results showed that the crystalline grain size of corrosion film surface is different for the different CO2 partial pressure. When CO2 partial pressure is greater than the critical pressure, the crystalline grain is not oblique six-party crystal structure, and the grains become small and compact, so the corrosion product film should have a good corrosion inhibition. Both static and dynamic corrosion of samples are serious. The research has a theoretical guiding significance on corrosion protection during CO2 flooding.
ISSN:1013-9826
1662-9795
1662-9795
DOI:10.4028/www.scientific.net/KEM.773.179