Seamless Pipe Casing API 5CT P110

Seamless Pipe Casing API 5CT P110

Pipe casing inspection : Products : API SPEC 5CT Casing Pipe and Tubing & Casing. Types : Seamless casing and erw casing Applications : It is widely used for oil casing and tubing in oil wells Grades : API 5CT J55/K55 / N80 / L80-1 / L80-9Cr / L80-13Cr / P110 / Q125 / K55 D10 / L80 D10....

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Pipe casing inspection:

 

Products: API SPEC 5CT Casing Pipe and Tubing & Casing.
Types: Seamless casing and erw casing
Applications: It is widely used for oil casing and tubing in oil wells
Grades: API 5CT J55/K55/N80/L80-1/L80-9Cr/L80-13Cr/P110/Q125/K55 D10/L80 D10.
Special Service: Sweet Service, Sour Service, Anti-H2S, NACE MR0175/ISO15156
Produce Process: Hot Rolled, Cold Drawn, Hot Expanded.
Accessories: Pup Joint, Coupling (Coupling Stock), Blast Joint, Crossover etc.
Connection: API connection and Premium connection, like TPCQ, HSM etc.

A full length non destructive inspection is performed in accordance with API 5CT for external and internal, longitudinal
and transverse defects with a standard notch depth equal to 5% of the specified wall thickness.


 

Dimension Tolerance

Types of steel tubes
Outer Diameter
Wall Thickness
Cold-rolled tubes
Tube sizes(mm)
Tolerances(mm)
Tolerances(mm)
<114.3
±0.79
-12.5%
≥114.3
-0.5%,+1%

 hemical Composition

Standard Grade Chemical compositions(%)
API SPEC 5CT
J55
C Si Mn P S Cr Ni Cu Mo V
K55 0.34~0.39
0.20~0.35
1.25~1.50
≤0.020
≤0.015
≤0.15
≤0.20
≤0.20
/ /
N80
0.34~0.38
0.20~0.35
1.45~1.70
≤0.020
≤0.015
≤0.15
/ / / 0.11~0.16
L80
0.15~0.22
≤1.00
0.25~1.00
≤0.020
≤0.010
12.0~14.0
≤0.20
≤0.20
/ /
P110
0.26~0.395
0.17~0.37
0.40~0.70
≤0.020
≤0.010
0.80~1.10
≤0.20
≤0.20
0.15~0.25
≤0.08

 


Mechanical properties

Grade Type Total elongation under load (%)
Yield strength (min)
Yield strength (max)
Tensile strength min Mpa
Hardness Max (HRC)
Hardness Max (HBW)
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 - -
L80 1 0.5
552 655 655 23 241
L80
9Cr 0.5
552 655 655 23 241
L80
13Cr 0.5
552 655 655 23 241
C90 - 0.5
621 724 689 25.4 255
C95 - 0.5
655 758 724 - -
T95 - 0.5 655 758 724 25.4 255
P110 - 0.6 758 965 862 - -
Q125 All 0.65 862 1034 931 - -

 

Oil casing is used to support the oil, gas wells of steel pipe, in order to ensure the drilling process and the completion of the entire well after the normal operation. Each well has several layers of casing depending on the drilling depth and geology. Casing down to use cement cementing, it and the tubing, drill pipe is different, can not be reused, a one-time consumption of materials. Therefore, the casing of the total consumption of more than 70% of the wells. Casing according to the use can be divided into: catheter, surface casing, casing technology and oil casing.

 

 

 

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