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KONG Weihai, AI Zhibin, HU Pan, WAN Zhang, ZHANG Qiang, WANG Mengmeng, FEI Qinnan. Corrosion Mechanism of the Stationary Section of L320 Crude Oil Pipeline[J]. Corrosion & Protection, 2019, 40(7): 502-506. DOI: 10.11973/fsyfh-201907007
Citation: KONG Weihai, AI Zhibin, HU Pan, WAN Zhang, ZHANG Qiang, WANG Mengmeng, FEI Qinnan. Corrosion Mechanism of the Stationary Section of L320 Crude Oil Pipeline[J]. Corrosion & Protection, 2019, 40(7): 502-506. DOI: 10.11973/fsyfh-201907007

Corrosion Mechanism of the Stationary Section of L320 Crude Oil Pipeline

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  • Received Date: December 09, 2018
  • The static section of a corrosion perforated L320 oil pipeline was selected as the research object. The corrosion causes of the stationary section of the crude oil pipeline were studied through field investigation, physical and chemical testing and electrochemical methods. The results show that the service environment of the stationary section of the crude oil pipeline was mainly oil-water mixed medium containing H2S, CO2 and mineral compounds. Corrosion failure was mainly concentrated on the 5 to 7 o'clock position on the inner wall of the pipeline. The corrosion product was loose and contained S, O, C, and Fe elements. The dominant factor of failure was localized corrosion caused by crude oil deposited water containing H2S and CO2. In addition, the loose corrosion products had the effect of accelerating corrosion, and the corrosion morphology was also changed from localized corrosion to uniform corrosion.
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