STEEL TUBING WITH ENHANCED SLOT-ABILITY CHARACTERISTICS FOR WARM TEMPERATURE SERVICE IN CASING LINER APPLICATION AND METHOD OF MANUFACTURING THE SAME

A post-yield hardened steel tube, particularly useful for creating slotted liners, for use in various applications in the oil and gas industries. The steel specifications meet the broad API 5CT standard, but the resulting slotted tu be exhibits both enhanced slot-ability characteristics and superior...

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Bibliographische Detailangaben
Hauptverfasser:	PEREZ, TERESA ESTELA, ECHANIZ, GUILLERMO PATRICIO, PIGLIACAMPO, LUCAS JULIAN
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ALLOYS CHEMISTRY FERROUS OR NON-FERROUS ALLOYS GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	A post-yield hardened steel tube, particularly useful for creating slotted liners, for use in various applications in the oil and gas industries. The steel specifications meet the broad API 5CT standard, but the resulting slotted tu be exhibits both enhanced slot-ability characteristics and superior thermo- mechanical characteristics in buckling resistance and localization resistance. A method of manufacturing a steel tube with substantial post-yield hardening behavior across a temperature range between room temperature and 350 .degree.C while providing good slot- ability, comprising using a steel meeting the broad API 5CT standard but wit h very small quantities of sulfur, performing a standard hot rolling process follow ed by a specifically defined heat treatment cycle, so as to create a microstructure characterized either ferrite plus pearlite or a ferrite plus bainite-pearlit e.