Citation

Li M, Liu Z, Zhao Y, Zhou Y, Huang P, Li X, Li P, Wang X, Zhang D. J. Hazard. Mater. 2018; 366: 65-77.

Affiliation

Carbon Capture and Storage and Enhanced Oil Recovery of Jilin Oilfield of Oilfield of PetroChina, Songyuan, China.

Copyright

(Copyright © 2018, Elsevier Publishing)

DOI

10.1016/j.jhazmat.2018.11.089

PMID

30502574

Abstract

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.

Copyright © 2018 Elsevier B.V. All rights reserved.

Language: en

Keywords

Axial tensile load; Boiling liquid expanding vapor explosion (BLEVE); Burst pressure; CO(2) flooding; Defect