TUBING API

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Tubing

Tubing is pipe used for the transportation of crude oil and natural gas from an oil or gas layer to the surface after drilling is complete. It is made to withstand the pressure generated from the extraction process. Tubing is manufactured in the same way as casing, except that an additional process known as "upsetting" is applied to thicken the pipes. The tubing production processing is similar to the process of casing production. Tubing pipes typically have diameters of 60.3 mm to 114.3 mm.

Parameters of tubing pipes.

Size	Linear Mass lb/ft		Outside diameter		Wall thickness		Type of end-finish
	Linear Mass lb/ft		Outside diameter		Wall thickness		Grade
	Nonupset T﹠C	Ex-Upset T﹠C	ln.	mm	ln.	mm	J-55	L-80	N-801、Q	C-90	T-95	P-110
2 3/8”	4.00	--	2.375	60.33	0.167	4.24	PN	PN	PN	PN	PN	--
	4.60	4.70	2.375	60.33	0.190	4.83	PNU	PNU	PNU	PNU	PNU	PNU
	5.80	5.95	2.375	60.33	0.254	6.45	--	PNU	PNU	PNU	PNU	PNU
	6.60	--	2.375	60.33	0.295	7.49	--	P	--	P	P	--
	7.35	7.45	2.375	60.33	0.336	8.53	--	PU	--	PU	PU	--
2 7/8”	6.40	6.50	2.875	73.03	0.217	5.51	PUN	PNU	PNU	PNU	PNU	PNU
	7.80	7.90	2.875	73.03	0.276	7.01	--	PNU	PNU	PNU	PNU	PNU
	8.60	8.70	2.875	73.03	0.308	7.82	--	PNU	PNU	PNU	PNU	PNU
	9.35	9.45	2.875	73.03	0.340	8.64	--	PU	--	PU	PU	--
	10.50	--	2.875	73.03	0.392	9.96	--	P	--	P	P	--
	11.50	--	2.875	73.03	0.440	11.18	--	P	--	P	P	--
3 1/2”	7.70	--	3.500	88.90	0.216	5.49	PN	PN	PN	PN	PN	--
	9.20	9.30	3.500	88.90	0.254	6.45	PNU	PNU	PNU	PNU	PNU	PNU
	10.20	--	3.500	88.90	0.289	7.34	PN	PN	PN	PN	PN	--
	12.70	12.95	3.500	88.90	0.375	9.52	--	PNU	PNU	PNU	PNU	PNU
	14.30	--	3.500	88.90	0.430	10.92	--	P	--	P	P	--
	15.50	--	3.500	88.90	0.476	12.09	--	P	--	P	P	--
	17.00	--	3.500	88.90	0.530	13.46	--	P	--	P	P	--
4”	9.50	--	4.000	101.60	0.226	5.74	PN	PN	PN	PN	PN	PU
	--	11.00	4.000	101.60	0.262	6.65	PU	PU	PU	PU	PU	PU
	13.20	--	4.000	101.60	0.33.	8.38	--	P	--	P	P	--
	16.10	--	4.000	101.60	0.415	10.54	--	P	--	P	P	--
	18.90	--	4.000	101.60	0.500	12.70	--	P	--	P	P	--
	22.20	--	4.000	101.60	0.610	15.49	--	P	--	P	P	--
4 1/2”	12.60	12.75	4.500	114.30	0.271	6.88	PNU	PNU	PNU	PNU	PNU	--
	15.20	--	4.500	114.30	0.337	8.56	--	P	--	P	P	--
	17.00	--	4.500	114.30	0.380	9.65	--	P	--	P	P	--
	18.90	--	4.500	114.30	0.43	10.92	--	P	--	P	P	--
	21.50	--	4.500	114.30	0.500	12.70	--	P	--	P	P	--
	23.70	--	4.500	114.30	0.560	14.22	--	P	--	P	P	--
	26.10	--	4.500	114.30	0.630	16.00	--	P	--	P	P	--
Non-Upset T﹠C— Ex-Upset T﹠C— P—/Plain end N—/Non-upset threaded and coupled U—/External upset threaded and coupled