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Long Y.-Y.,China Institute of Technology | Xu W.-G.,Shengxing Anticorrosion Ltd Liability Company of Shengli Oil Field | Zhang J.,China Institute of Technology | Yin C.-F.,China Institute of Technology | Li A.-J.,Engineering Quality Surveillance Station
Corrosion and Protection | Year: 2010

Three layer tungsten-based alloy was prepared on the surface of PI 10 well tube steel by amorphous alloy electroplating technology. The environments of high content of CO2 or high pressure with oxygen enrichment were simulated respectively to study the anticorrosion performance of the tungsten-based alloy. The antiscale performance of the tungsten-based alloy was studied by field pilot-scale testing. Compared to the P110 bare steel, the tungsten-based coating presented strong anticorrosion performance in the environments of CO2 or high pressure with oxygen enrichment. The corrosion inhibition efficienciy was 96. 88% and 93. 75% respectively. The anti-scale efficiency of the tungsten-based alloy could be 41. 73%. W-based amorphous alloy electroplating technology is an economic and applicable technology for anticorrosion, antiscale and eccentric wear prevention of well pipes.

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