Tuyau de cuvelage pour champ pétrolifère API 5CT

Les avantages de l’utilisation de tuyaux de cuvelage pour champs pétrolifères  API 5ct dans l’exploration et la production pétrolières et gazières

Exigences de traction et de dureté

Note

	Contrainte d’élasticité MPa	Tension	Force		Dureté a,c	Épaisseur de paroi spécifiée Dureté admissible		Variante	b   Type
Élongation totale sous charge		min MPa	maximum
	min	maximum		HRC	HBW	mm	HRC	H40
1	2	3	4	5	6	7	8	9	10
		0.5	276	552	414			J55
		0.5	379	552	517			K55
		0.5	379	552	655			N80
	1	0.5	552	758	689			N80	Q
		0.5	552	758	689			R95
		0.5	655	758	724			l80 L80
	1	0.5	552	655	655	23	241	L80	9Cr 13Cr
		0.5	552	655	655	23	241
		0.5	552	655	655	23	241	C90	12.70
	1	0.5	621	724	689	25.4	255		3
						12.71 au 19.04			4
						19h05 à 25h39			5
						25h40	T95	12.70	6
	1	0.5	655	758	724	25.4	255		3
						12.71 au 19.04			4
						19h05 à 25h39			5
						25h40	C110		6
12.70		0.7	758	828	793	30	286		3
						12.71 au 19.04			4
						19h05 à 25h39			5
						25h40	P110		6
		0.6	758	965	862			Q125	b
	1	0.65	862	1034	931	12.70			3
						12h71 au 19.04 19.05			4
							a En cas de litige, les essais de dureté Rockwell C en laboratoire doivent être utilisés comme méthode d’arbitrage.	b Aucune limite de dureté n’est spécifiée, mais la variation maximale est limitée à titre de contrôle de fabrication conformément à 7.8 et 7.9.	5
c Pour les essais de dureté à travers la paroi des grades L80 (tous les types), C90, T95 et C110, les exigences indiquées dans l’échelle HRC concernent l’indice de dureté moyen maximum.
b No hardness limits are specified, but the maximum variation is restricted as a manufacturing control in accordance with 7.8 and 7.9.
c For through-wall hardness tests of Grades L80 (all types), C90, T95 and C110, the requirements stated in HRC scale are for maximum mean hardness number.

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In addition, the use of API 5CT oilfield casing pipe also provides a number of other benefits. The pipe is designed to provide a secure and reliable connection between the wellbore and the surface, allowing for the safe and efficient transfer of oil and gas from the wellbore to the surface. The pipe is also designed to be resistant to corrosion, abrasion, and other forms of wear and tear, ensuring that the pipe will remain in good condition for many years, even in the most extreme conditions.

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