Effects of corrosion defect and tensile load on injection pipe burst in CO2 flooding

Mingzhi Li, Zhenyi Liu*, Yao Zhao, Yi Zhou, Ping Huang, Xuan Li, Pengliang Li, Xue Wang, Deping Zhang

*此作品的通讯作者

科研成果: 期刊稿件文章同行评审

21 引用 (Scopus)

摘要

Highly pressurized injection pipelines in CO2 flooding often suffer from different types of corrosion defects and mechanical stresses and can easily cause serious damage to the environment. Currently, the descending rule of pipe burst pressures under different defect parameters and tensile loads has not been studied systematically. In this study, a section of injection pipe was used to simulate the burst process of pipe with groove and general corrosion defects. The crack appearance showed that the fracture began at the centre of the longitudinal defect line as an instantaneous ductile rupture and then extended along both sides as a rapid brittle rupture under high stress. The burst pressure in the groove corrosion defect tests showed that the defect depth played a more dominant role in pipe burst than the defect length did, and when a 30 MPa axial tensile load was added, the pipe burst pressure was reduced approximately 20–30%. In general corrosion defect tests, the burst pressures were generally much lower than the groove corrosion defect tests produced, and when adding the axial tensile load, the burst mode changed. Moreover, the value of the burst pressure can be a sign of BLEVE (boiling liquid expanding vapor explosion) severity.

源语言英语
页(从-至)65-77
页数13
期刊Journal of Hazardous Materials
366
DOI
出版状态已出版 - 15 3月 2019

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Li, M., Liu, Z., Zhao, Y., Zhou, Y., Huang, P., Li, X., Li, P., Wang, X., & Zhang, D. (2019). Effects of corrosion defect and tensile load on injection pipe burst in CO2 flooding. Journal of Hazardous Materials, 366, 65-77. https://doi.org/10.1016/j.jhazmat.2018.11.089