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    高酸性腐蝕氣田用鎳基合金油套管的開發(fā)

    Development of Nickel Base Alloy Tubing/Casing for Service in Hi-acidic Corrosive Gas Field

    • 摘要: 鎳基合金油套管是涉及國家能源安全的重要產(chǎn)品,其合金含量高達80%以上,主要用于地質結構復雜、高溫高壓、高腐蝕性的特大型海相天然氣田的開采開發(fā)。其因服役條件惡劣、制造工序復雜、生產(chǎn)難度大、產(chǎn)品質量要求苛刻等,被譽為油井管中技術含金量最高的產(chǎn)品?？偨Y了鎳基合金油套管產(chǎn)品的技術特點和質量要求,介紹了寶山鋼鐵股份有限公司開發(fā)的鎳基合金油套管產(chǎn)品的質量和性能,并運用XPS、TEM等微觀分析手段分析了產(chǎn)品高抗H2S、CO2、Cl-、單質S等的耐蝕行為和機理。

       

      Abstract: With high alloy content above 80%,the nickel base alloy tubing/casing are regarded as important products related to the national energy safety,and mainly used for exploitation and exploration of extra-large marine natural gas fields with complex geological structure,hi-temperature and hi-pressure,and hi-corrosiveness. Such pipes are also honored as the most hi-technologically-valuable ones among the OCTG products due to their critical service conditions,complex manufacture processes,high difficult degree for production,and stringent product quality requirements. Summarized in the paper are the technological characteristics and quality requirements of the nickel base alloy tubing/casing;described are quality and properties of such products as made by Baoshan Iron and Steel Co.,Ltd.,and moreover analyzed by such micro-analysis methods as XPS and TEM,etc are the anti-corrosion behaviors and mechanism of the said pipes relating to their high resistance against H2S,CO2,Cl- and the single substance S.

       

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