Online Detection and Risk Assessment of Corrosion in Oilfield Storage Tanks
Since the production of various types of storage tanks,due to tight production tasks,some of them have not carried out regular inspection and maintenance work.During the recent maintenance period of some storage tanks,it was found that the tanks were severely corroded and damaged.After preliminary economic evaluation,the cost of inspection and maintenance was higher than the cost of new construction.Therefore,some tanks were abandoned and rebuilt,causing significant economic losses.At present,the corrosion problem of the bottom plate of crude oil storage tanks in oil fields is prominent.Some crude oil storage tanks have been in a state of water accumulation and high corrosive environment for a long time.With the extension of service time,the risk of bottom plate corrosion is higher.By comparing the characteristics of tank corrosion detection technology,the adaptability evaluation is carried out,and the acoustic emission online detection technology is selected for online detection of tank bottom plates.This technology has fast operation and does not affect normal production,Being able to predict corrosion risks in advance,in order to comprehensively grasp the operational status of branch storage tanks,conduct tank risk assessment and classification,and save unnecessary tank opening and maintenance costs.
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