Numerical study on stress corrosion of X70 pipeline with the combined action of pits by sulfate-reducing bacteria and constant load

Sun, Dongxu; Li, Lei; Wang, Dini; Ren, Shuai; Xie, Fei; Wu, Ming

doi:10.1016/j.matdes.2023.111832

Cited by 4 publications

(2 citation statements)

References 26 publications

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“…SRB frequently identi ed as a key player associated with MIC, are widely acknowledged. Presence of SRB poses a signi cant issue in the petroleum industry, as they lead to pitting of tanks and pipelines [13]. This mainly attributed to their end product, hydrogen sul de (H 2 S), cathodic depolarization theory, and metal surface microbial attachment (bio lm) [14,15].…”

Section: Introductionmentioning

confidence: 99%

Microbiological study for aerobic and anaerobic bacteria influenced corrosion originated from an Egyptian petroleum company: community and corrosive activity

Labena,

Mahdy,

Kabel

et al. 2024

Preprint

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This research focused on investigating a case of an Egyptian petroleum company, where their fields faced Microbiologically influenced corrosion (MIC) problems, even though they had been using corrosion inhibitors and biocides. Therefore, five samples were collected and used to study their microbial community using 16S metagenomics sequencing. The result displayed many potential corrosive bacteria that represented in families, genera and species. The samples were studied concerning total bacterial counts, acid-producing bacteria (APB), slime-forming bacteria (SFB), sulfate-reducing bacteria (SRB). The results displayed that; total bacterial counts were Nil in all samples except one. All samples did not grow in specific media for APB. All the samples displayed positive growth results on SFB specific media. Moreover, only one sample has demonstrated a positive result on SRB specific media. One sample was selected to study its corrosion activities upon its diver’s bacterial community, cultivable on microbially specific media and its real-field corrosion severity. The SFB corrosion`s activities were assessed by determining the variation in bacterial counts, redox potential and metal corrosion rate. Corrosion`s activities of SRB were assessed by examining alterations in dissolved sulfide, redox potential and metal corrosion rate. Surface morphology was examined using scanning electron microscopy.

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Section: Introductionmentioning

confidence: 99%

Microbiological study for aerobic and anaerobic bacteria influenced corrosion originated from an Egyptian petroleum company: community and corrosive activity

Labena,

Mahdy,

Kabel

et al. 2024

Preprint

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“…However, in different well-fluid environments, there may be different relationships between the corrosion behavior of different material surfaces and their stress corrosion susceptibility. Some researchers studied the stress corrosion resistance of high-strength steel, aluminum alloys, and magnesium alloys, measuring the stress corrosion resistance characteristics of specific materials in specific environments [26][27][28][29][30][31][32][33][34][35][36][37][38][39][40][41][42]. However, in these studies, the material stress was constant, and the stress and corrosion environments were greatly different from the working environment of a high-strength sucker rod.…”

Section: Introductionmentioning

confidence: 99%

Study on Variable Stress Corrosion Susceptibility of Four Typical High-Strength Sucker Rods in High-Salinity Well Fluids

Zhang,

Li,

Zhu

et al. 2023

Processes

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To study the corrosion characteristics of high-strength sucker rods in high-salinity well fluids under alternating stresses, a single-factor stress corrosion test was designed. The slow strain rate tensile test (SSRT) was carried out for four kinds of high-strength sucker rods under different Cl− and HCO3− concentrations and with different service strengths, and the variable stress corrosion cracking susceptibility was analyzed. The results show that the elongation loss and absorbed work loss of the H-grade ultra-high-strength 4330 sucker rod after stress corrosion are greater than those of both the high-strength 4142 sucker rod and the high-strength 20CrMoA sucker rod. The elongation and absorbed work loss of the 30CrMoA and 20CrMoA sucker rods are less affected by the changes in Cl− and HCO3−. With the increase in use strength, the elongation and absorbed work loss of the high-strength sucker rod increase. The change in the surface of the sucker rod during the corrosion process is inconsistent with the actual elongation of the sucker rod and the absorbed work loss. It can be concluded that the stress corrosion cracking susceptibility of the sucker rod is not necessarily related to the tensile strength of the sucker rod. The 4330 sucker rod is not suitable for applications in wells with a high concentration of Cl−, but it is suitable for operation in alkaline conditions where corrosive media such as HCO3− and Cl− coexist. Under highly corrosive and highly mineralized conditions, the 30CrMoA sucker rod is less susceptible to stress corrosion. The stress corrosion cracking susceptibility of the 20CrMoA sucker rod is lower than that of the 4142 sucker rod. In high-salinity well fluids, the higher the use strength, the higher the stress corrosion cracking susceptibility of the high-strength sucker rod is. The test results for the weight-loss-based corrosion rate and plastic loss may contradict the determination of the corrosion susceptibility of the material under working conditions.

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Effects of high-temperature and high-pressure immersion corrosion durations on the fretting tribo-corrosion behaviors of Inconel 690 alloy

Wang,

Zhou,

Yin

2024

Wear

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Numerical study on stress corrosion of X70 pipeline with the combined action of pits by sulfate-reducing bacteria and constant load

Cited by 4 publications

References 26 publications

Microbiological study for aerobic and anaerobic bacteria influenced corrosion originated from an Egyptian petroleum company: community and corrosive activity

Microbiological study for aerobic and anaerobic bacteria influenced corrosion originated from an Egyptian petroleum company: community and corrosive activity

Study on Variable Stress Corrosion Susceptibility of Four Typical High-Strength Sucker Rods in High-Salinity Well Fluids

Effects of high-temperature and high-pressure immersion corrosion durations on the fretting tribo-corrosion behaviors of Inconel 690 alloy

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