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    火驅(qū)稠油熱采井TP90H-9Cr套管熱處理工藝優(yōu)化試驗(yàn)研究

    Experimental Study on Process Optimization of Heat Treatment of TP90H-9Cr Casings for ThermalRecovery Wellfor in-situ Combustion Super Heavy Oil

    • 摘要: 分析了火驅(qū)稠油熱采井套管鋼種的化學(xué)成分特點(diǎn)和技術(shù)要求，選擇電站鍋爐用10Cr9Mo1VNb鋼作為火驅(qū)稠油熱采井套管的替代鋼種，并對(duì)其原有的熱處理工藝進(jìn)行優(yōu)化改進(jìn)。結(jié)果表明：經(jīng)過熱軋態(tài)直接回火處理的TP90H-9Cr套管材料，其高溫強(qiáng)度、抗氧化性能和抗CO2腐蝕性能滿足使用要求；TP90H-9Cr套管的室溫組織存在一定程度的軋態(tài)組織位相遺傳，但通過合金元素的固溶強(qiáng)化、析出強(qiáng)化可使其各項(xiàng)性能指標(biāo)滿足要求。

       

      Abstract: Analyzed in the essay are the chemical composition characteristics and technique requirements of the steel types of casings for thermal recovery well for in-situ combustion super heavy oil.10Cr9Mo1VNb steel normally used on power plant boiler is used as a substitution steel type for casings for thermal recovery well for in-situ combustion super heavy oil，with it’s original heat treatment process being optimized.The research shows that the TP90H-9Cr casing which is tempered right after hot-rolling is satisfactory to the application requirements in terms of elevated-temperature strength，oxidation resistance and CO2 corrosion resistance.Although the microstructure of a TP90H-9Cr casing under room temperature is inherited from that of the as-rolled pipe to a certain extent，the desirable performance indexes are able to be obtained by means of solution strengthening and precipitation strengthening of alloy elements.

       

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