低酸性環(huán)境用C125鋼級(jí)套管開發(fā)研究進(jìn)展
Progresses with R ＆ D of C125 Casing for Mildly Sour Environments
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摘要: 通過對(duì)比分析,綜合介紹了國外低酸性環(huán)境用C125鋼的研發(fā)進(jìn)展,C125鋼級(jí)套管的適用環(huán)境條件和SSC評(píng)價(jià)試驗(yàn)。指出C110鋼級(jí)是目前通過NACE TM0177標(biāo)準(zhǔn)A溶液,直至NACE MR0175/ISO 15156-2標(biāo)準(zhǔn)pH-PH2S圖的全酸性環(huán)境評(píng)定的最高鋼級(jí)抗酸性鋼。介紹了適用環(huán)境SSC評(píng)價(jià)方法及在低酸性環(huán)境用C125鋼級(jí)開發(fā)等方面的應(yīng)用。Abstract: With a comparative analysis,the progress with R & D of the C125 casing for mildly sour environments as made abroad is generally described here in the paper. Also elaborated are the fit-for-purpose environment and the SSC evaluation test of the said casing. It is pointed out that the C110 grade is the highest one among the SSC-resistant steel grades,which evaluation result is made through the method A,the solution A as per NACE TM0177 up to the pH-P H 2 S plate region Ⅲ as per NACE MR0175/ISO 15156-2. Further described are the fit-for-purpose environment evaluation and their application to development of the C125 grade for mildly sour environments.
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