Casing &Tubing

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Casing &Tubing

Product details

Introduction

Casing is used for lining the complete borehole which has been dug into the ground to procure oil. Similar to the drill pipe, the oil well casing pipe is also subjected to axial tension, therefore they are required to be made from high-quality strong steel material. OCTG casing is large diameter pipe which are held in place in the borehole using cement.
The diameters of OCTG casing pipe range from 4.5″ to 36″. The well-cemented pipe acts as the structural component of the well and offer hole integrity. They prevent the well from collapsing when the drilling process is on. Good quality, well cemented casing can stay in place for the whole life of the well.

Product:	Casing Pipe, Oil Casing, API Casing, Well Casing, Casing
Application:	Used for oil casing and tubing in oil wells as well as sidewall
Size:	OD: 114.3mm-508mm
	WT: 5-16mm
	LENGTH: R1, R2, R3
Pipe Standard:	API 5CT PSL1/PSL2 J55,K55,N80-1,N80-Q,
Pipe Standard:	API 5CT PSL1/PSL2 L80-1, L80-9Cr,L80-13Cr,C90, C95, P110, Q125
Thread:	NUE, EUE, VAM, STC, LTC, BTC, XC, VAM TOP, NEW VAM,HYDRILL CS
Special Service	Sweet Service, Sour Service, Anti-H2S, NACE MR0175/ISO15156
Accessories:	Pup Joint, Coupling, Drill Collar, Crossover etc.

Tubing is inserted inside the wellbore through the oil well casing pipe, which helps the transportation of the hydrocarbons to the surface. It is pipe either used for transporting natural gas or crude oil to the facilities for further processing after the drilling is complete. Similar to the drill pipe and casing, tubing also is subjected to high pressure during the extraction process, and hence needs to be thick, strong and sturdy. Production tubing is available in various sizes ranging from ¾” to 4 ½”.

Product:	Tubing Pipe, Oil Tubing, API Tubing Well Tubing, Tubing
Application:	Used for extracing Oil or Gas from Wells
Size:	OD: 48.26mm-114.3mm
	WT: 3.18-16mm
	LENGTH: R1, R2, R3
Pipe Standard:	API 5CT PSL1/PSL2 J55,K55,N80-1,N80-Q,
Pipe Standard:	API 5CT PSL1/PSL2 L80-1, L80-9Cr,L80-13Cr,C90, C95, P110, Q125
Thread:	NUE, EUE, VAM, STC, LTC, BTC, XC, VAM TOP, NEW VAM,HYDRILL CS
Special Service	Sweet Service, Sour Service, Anti-H2S, NACE MR0175/ISO15156
Accessories:	Pup Joint, Coupling, Drill Collar, Crossover etc.

Chemical Materials and Mechanical Properties

Steel grade	Type	C		Mn		Mo		Cr		Ni Max	Cu Max	P Max	S Max	Si Max
Steel grade	Type	Min	Max	Min	Max	Min	Max		Max	Ni Max	Cu Max	P Max	S Max	Si Max
H40	-	-	-	-	-	-	-	-	-	-	-	0.030	0.030	-
J55	-	-	-	-	-	-	-	-	-	-	-	0.030	0.030	-
K55	-	-	-	-	-	-	-	-	-	-	-	0.030	0.030	-
N80	1	-	-	-	-	-	-	-	-	-	-	0.030	0.030	-
N80	Q	-	-	-	-	-	-	-	-	-	-	0.030	0.030	-
M65	-	-	-	-	-	-	-	-	-	-	-	0.030	0.030	-
L80	1	-	0.43	-	1.90	-	-	-	-	0.25	0.35	0.030	0.030	0.45
L80	9 Cr	-	0.15	0.30	0.60	0.90	1.10	8.00	10.0	0.50	0.25	0.020	0.010	1.00
L80	13 Cr	0.15	0.22	0.25	1.00	-	-	12.0	14.0	0.50	0.25	0.020	0.010	1.00
C90	1	-	0.35	-	1.20	0.25	0.85	-	1.50	0.99	-	0.020	0.010	-
P110	-	-	-	-	-	-	-	-	-	-	-	0.030	0.030	-
Q125	1	-	0.35	-	1.35	-	0.85	-	1.50	0.99	-	0.020	0.010	-

Note：If the wall thickness is less than 17.78mm, the molybdenum content of the C90-1 steel grade has no lower limit.

Dimension Tolerances:

Casing Pipe		Tolerance
Outside Diameter	Pipe Body	D≤101.60mm，±0.79mm
		D≥114.30mm，+1.0%, -0.5%D
	Coupling	±1%D
Wall Thickness		0, -12.5%t
Weight	Single Lengths	+6.5%,-3.5%
	Carload Lots or Order Quantity	≥18144 kg(40000ib)，0,-1.75%
		＜18144 kg(40000ib)，0,-3.5%

Tensile and Hardness Requirements:

Steel grade	Type	Total elongation under load (%)	Yield strength (Mpa)		Tensile strength (Mpa) min	Hardness max
Steel grade	Type	Total elongation under load (%)	min	max	Tensile strength (Mpa) min	HRC	HBW
H40	-	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	-	-
M65	-	0.5	448	586	586	22	235
L80	1	0.5	552	655	655	23	241
L80	9 Cr	0.5	552	655	655	23	241
L80	13 Cr	0.5	552	655	655	23	241
C90	1	0.5	621	724	689	25.4	255
P110	-	0.6	758	965	862	-	-