Corrosion Behavior on 20# Pipeline Steel by Sulfate-Reducing Bacteria in Simulated NaCl Alkali/Surfactant/Polymer Produced Solution

Li Zhang; Xin Yu; He Sun; Yang Ge; Chao Wang; Limin Li; Jian Kang; Huijuan Qian; Qinghe Gao

doi:10.1021/acsomega.3c00391

Corrosion Behavior on 20# Pipeline Steel by Sulfate-Reducing Bacteria in Simulated NaCl Alkali/Surfactant/Polymer Produced Solution

ACS Omega. 2023 Apr 6;8(15):13955-13966. doi: 10.1021/acsomega.3c00391. eCollection 2023 Apr 18.

Authors

Li Zhang¹, Xin Yu¹, He Sun², Yang Ge³, Chao Wang¹, Limin Li¹, Jian Kang¹, Huijuan Qian¹, Qinghe Gao¹

Affiliations

¹ Heilongjiang Provincial Key Laboratory of Oilfield Applied Chemistry and Technology, Daqing Normal University, Daqing 163712, China.
² Daqing Oilfield Co. Ltd., First Oil Production Plant, Daqing 163001, China.
³ Northeast Petroleum University, Daqing 163318, China.

Abstract

The corrosion behavior of sulfate-reducing bacteria (SRB) on 20# carbon steel in the NaCl alkali-surfactant-polymer (ASP) flooding system was studied by scanning electron microscopy, electrochemical measurement, X-ray photoelectron spectroscopy, and laser confocal microscopy. The results showed that the presence of SRB results in a large viscosity loss of the system. SRB can use hydrolyzed polyacrylamide (HPAM) as a nutrient to grow, and the number of SRB remained at a high level after 15 days. Weight loss and electrochemical tests indicated that SRB promoted corrosion of pipeline steel. The corrosion of carbon steel in the early stage of immersion was inhibited by the biofilm formed on the surface, and the thick biofilm in the later stage of immersion caused serious pitting corrosion. The localized corrosion caused by SRB was not inhibited by HPAM and sodium petroleum sulfonate (surfactant) adsorbed on the surface.