The underground temperature of thermal recovery wells is relatively high and the environmental medium is harsh.The performance of aluminum based sacrificial anodes with conventional formulas is poor under these conditions.It is necessary to develop new sacrificial anodes suitable for downhole high temperature corrosion environment.Based on the typical composition of Al-Zn-In series sacrificial anode materials,this paper optimizes the introduction of other metal elements to design sacrificial anode materials suitable for high temperature oil well environment.The constant current test,polarization curve and other electrochemical performance tests of the developed anode material were carried out in 80℃oil well produced liquid.By comparing and analyzing the open circuit potential,working potential,capacitance,current efficiency,surface corrosion morphology and other indicators,a high temperature resistant aluminum alloy sacrificial anode with the best comprehensive performance is selected.
关键词
油井/牺牲阳极/耐高温/铝合金/井下
Key words
oil well/sacrificial anode/high temperature resistance/aluminium alloy/underground
维普
万方数据