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| Corrosion Behavior of N80 Steel in Simulated Water from deep Gaswell Containing Carbon Dioxide |
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| 大庆油田公司采油工程研究院采气工艺研究室 |
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Abstract Factors influencing corrosion rate of N80 steel in carbon dioxide environment were studied using autoclave,SEM and XRD.The results indicated that the temperature remarkably affects the characterization of corrosion product,and the corrosion rate increases along with the increasing of temperature up to 80℃,then reduces dramatically due to the formation of a protective layer on the surface of steel.Corrosion product was proved to be FeCO3 in higher temperature.Corrosion will be aggravated by reducing pH value and increasing the Cl- concentration,CO2 partial pressure and the flow velocity of solution.
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Received: 29 May 2006
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