Seamless Line Pipe Resistant to Corrosion by CO2/H2S and Sulfate-Reducing Bacteria and Manufacturing Method Thereof

The invention provides a seamless line pipe with excellent resistance against corrosion by CO2-H2S-SRB. The line pipe comprises, by mass fraction, C: 0.03 to 0.10%, Si: 0.1 to 0.5%, Mn: 0.10% to 1.50%, P: 0.02% or less, S: 0.005% or less, Cr: 1.0 to 4.0%, Ni: 0.1 to 1.5%, Cu: 0.15 to 2.0%, Mo: 0.05...

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Bibliographische Detailangaben
Hauptverfasser:	Zhang, Zhonghua, Jia, Xiaolan, Yu, Haobo, Yu, Yanzhao, Zhang, Junying, Yu, Lianwu, Jiang, Ruijing, Qi, Yameng, Kuang, Yuan, Chen, Changfeng, Liu, Yaoheng
Format:	Patent
Sprache:	eng
Schlagworte:	ALLOYS BLASTING CHEMISTRY EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING ENGINEERING ELEMENTS AND UNITS FERROUS OR NON-FERROUS ALLOYS FIXED CONSTRUCTIONS GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING JOINTS OR FITTINGS FOR PIPES LIGHTING MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS MEANS FOR THERMAL INSULATION IN GENERAL MECHANICAL ENGINEERING METALLURGY METALLURGY OF IRON MINING MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS PIPES SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING THERMAL INSULATION IN GENERAL TREATMENT OF ALLOYS OR NON-FERROUS METALS WEAPONS
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Beschreibung
Zusammenfassung:	The invention provides a seamless line pipe with excellent resistance against corrosion by CO2-H2S-SRB. The line pipe comprises, by mass fraction, C: 0.03 to 0.10%, Si: 0.1 to 0.5%, Mn: 0.10% to 1.50%, P: 0.02% or less, S: 0.005% or less, Cr: 1.0 to 4.0%, Ni: 0.1 to 1.5%, Cu: 0.15 to 2.0%, Mo: 0.05 to 0.4%, Ti: 0.01 to 0.05%, RE: 0.05 to 0.1%, and balance of Fe. After smelting, rolling into a billet, and piercing and rolling into a pipe, the resultant steel pipe is heated to 920 to 1000° C. and kept for 0.3 to 1 hour depending on the thickness of the steel pipe wall, and then subjected to rapid cooling and tempering heat treatment. The seamless line pipe can be used in the field of oil and gas fluid transportation and the like.