Abstract
This article analyzes the reasons for internal corrosion of an old crude oil pipeline on the basis of historical data on corrosion failures, in-line inspection (ILI) results, elevation, physico-chemical analysis of sedimentation water from pipeline, EDAX analysis, transportation technology, polarization curve and failure analysis of severe internal pipe corrosion. The results illustrate two points: (1) the corrosivity of sedimentation water is severe as the result of the combined effect of higher sulfate reducing bacteria (SRB), chloridion, salinity, operating temperature and flow-rate; and (2) the internal surface of a 15-kilometer downstream pipeline section close to an oil transportation station is bare without paraffin precipitation and directly exposed to the severely corrosive sedimentation water in the lower part of the pipe due to the high oil temperature.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
