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API 5CT Q125 CASING
API 5CT Q125 CASING
API 5CT Q125 CASING
API 5CT Q125 CASING
API 5CT Q125 CASING
API 5CT Q125 CASING
API 5CT Q125 CASING
API 5CT Q125 CASING

API 5CT Q125 CASING

API 5CT Q125 Casing is a API 5CT Oil Casing Pipe & mainly used for oil well drilling. We manufacture API 5CT Q125 Casing in accordance with the SY/T6194-96 standard, it is available as short thread type and long thread type supplied with their couplings.
Thickness:0.2-7.0 mm
Width:100-2200mm
Product Introduction
Technical data
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Product Introduction
Pipe Process of API 5CT Q125 Casing and Tubing
Round Pipe →  pipe inspection  → NDT inspection MPI → End Threading → Thread Inspection → Coupling Threading lnspection  → NDT inspection MPI ( coupling) → Phosphating (for coupling) → Coupling power Make up → Hydrostatic test → Drift test → Doping and Protectors Application  → Coating  → Measurement of  Length and Weight → Colour Identification → Marking → Packing → Warehousing

What is API 5CT Q125 Casing?
API 5CT Q125 Casing serves to transport both crude oil and natural gas from oil and gas layer to the surface pipeline after drilling is completed. It is able to bear the pressure produced by the exploitation process. After the outer surface is coated with a protective layer, the tubing is marked in accordance with the API 5CT standard and strapped with metal belt.

Our oilfield tubing & API 5CT Q125 Casing can be widely applicable to petroleum, construction, shipbuilding, smelting, aviation, electric power, food, paper, chemical industry, medical equipment, boilers, heat exchangers, metallurgy and so on.This oilfield tubing can be classified as NUE type and EUE type. You can find here Casing Dimensions & Casing Wall Thickness.

API 5CT Q125 Casing:
Q125 Casing is placed downhole to provide structural integrity to the wellbore and must withstand external-collapse pressure from rock formations and internal-yield pressure from fluid and gas. It must also hold its own deadweight and withstand the torque and transaxial pressure placed on it while running downhole.

API 5CT Q125 Tubing:
Q125 Tubing is placed within the casing. It is used to transport oil and gas from the source rock to the wellhead
Technical data

API 5CT Q125 Casing Specification

Casing Pipe Specifications

Standards:

  API SPEC 5CT

Model in Common Use:

  2-3/8", 2-7/8", 3-1/2", 4", 4-1/2"

Length Range:

  R1(6.10-7.32m), R2(8.53-9.75m), R3(11.58-12.8m)

Steel Grade (Casing Grades, Tubing Grades):

  J55, K55, N80-1, N80-Q, L80, P110

Type of Screw Thread:

  Non upset threaded end(NUE), External upset threaded end(EUE)

Specialties
  • Threading
  • Heat treating
  • External upset
  • Drifting (Full-length, or just ends)
  • Hydrostatic Testing
  • Full third-party inspection capabilities (EMI, SEA, and Weld Line)
  • Couplings – EUE, AB Modified, turned down, special clearance couplings
  • Coating to customer specifications
  • Pup Joints
 

API 5CT Q125 Casing Chemical Composition, mass fraction (%)

Group Grade Type C Mn Mo Cr Ni max. Cu max. P max. S max. Si max.
min. max. min. max. min. max. min. max.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
1 H40 - - - - - - - - - - - 0.03 0.03 -
J55 - - - - - - - - - - - 0.03 0.03 -
K55 - - - - - - - - - - - 0.03 0.03 -
N80 1 - - - - - - - - - - 0.03 0.03 -
N80 Q - - - - - - - - - - 0.03 0.03 -
R95 - - 0.45 c - 1.9 - - - - - - 0.03 0.03 0.45
2 M65 - - - - - - - - - - - 0.03 0.03 -
  L80 1 - 0.43 a - 1.9 - - - - 0.25 0.35 0.03 0.03 0.45
  L80 9Cr - 0.15 0.3 0.6 0.9 1.1 8 10 0.5 0.25 0.02 0.01 1
  L80 13Cr 0.15 0.22 0.25 1 - - 12 14 0.5 0.25 0.02 0.01 1
  C90 1 - 0.35 - 1.2 0.25 b 0.85 - 1.5 0.99 - 0.02 0.01 -
  T95 1 - 0.35 - 1.2 0.25 d 0.85 0.4 1.5 0.99 - 0.02 0.01 -
  C110 - - 0.35 - 1.2 0.25 1 0.4 1.5 0.99 - 0.02 0.005 -
3 P110 e - - - - - - - - - - 0.030 e 0.030 e -
4 Q125 1 - 0.35   1.35 - 0.85 - 1.5 0.99 - 0.02 0.01 -
a The carbon content for L80 may be increased up to 0.50 % maximum if the product is oil-quenched. 
b The molybdenum content for Grade C90 Type 1 has no minimum tolerance if the wall thickness is less than 17.78 mm. 
c The carbon content for R95 may be increased up to 0.55 % maximum if the product is oil-quenched. 
d The molybdenum content for T95 Type 1 may be decreased to 0.15 % minimum if the wall thickness is less than 17.78 mm. 
e For EW Grade P110, the phosphorus content shall be 0.020 % maximum and the sulfur content 0.010 % maximum. 
NL = no limit. Elements shown shall be reported in product analysis.


API 5CT Q125 Casing Mechanical Properties

Standard Type Tensile Strength
MPa
Yield Strength
MPa
Hardness
Max.
API SPEC 5CT J55 ≥517 379 ~ 552 ----
K55 ≥517 ≥655 ---
N80 ≥689 552 ~ 758 ---
L80(13Cr) ≥655 552 ~ 655 ≤241HB
P110 ≥862 758 ~ 965 ----

 

API 5CT Q125 Casing Steel color code

Name J55 K55 N80-1 N80-Q L80-1 P110
Casing a bright green band two bright green bands a bright red band a bright red band + a green band a red band + a brown band a bright white band
Coupling entire green coupling + a white band entire green coupling entire red coupling entire red coupling + a green band entire red coupling + a brown band entire white coupling
 

API 5CT Q125 Casing Features













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