API 5CT Seamless casing tube,Oilfield Steel Casing Pipe
ASTM A106 GR.B Galvanized scaffolding pipe,48.3mm,SCH 40 Steel
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ASTM A53 steel pipe, OD 219.1mm SCH 40,SRL,DRL tubing
January 27, 2017
Name: API SPEC 5CT Seamless Steel Tubes
Applications: It is widely used for oil casing and tubing in oil wells
Models: J55，N80，L80，P110 etc.
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％ | ||
Mechanical Properties：
| Standard codes | Models of steel tubes | Tensite strength（MPa） | Yield strength（MPa） | Elongation（％） | Hardness |
| API SPEC 5CT | J55 | ≥517 | 379～552 | check the table | |
| K55 | ≥517 | ≥655 | |||
| N80 | ≥689 | 552～758 | |||
| L80(13Cr) | ≥655 | 552～655 | ≤241HB | ||
| P110 | ≥862 | 758～965 |
SEAMLESS OIL TUBE:
1. Size: OD: 1.05″ to4 1/2 “, 26.87MM to 114.3MM
W.T:2.87 MM TO 16MM
Length: R1,R2,R3
2. Standard & Grade: API 5 CT, H40,J55,L80,N80,T95,P110
3. Certification: API 5CT,CE,ISO9001
SEAMLESS CASTING TUBE:
1. Size: OD: 4″ 1/2″ to 20″ 114.3MM to 508MM
W.T:5 MM TO 16MM
Length: R1,R2,R3
2. Standard&Grade: API 5 CT, H40,J55,K55,M65,L80,N80,T95,P110
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What is the meaning of well casing pipe in petroleum drilling?
Well casing is Steel tubing that is threaded. Pin on bottom and box on top. Terminology: OCTG – oil country tubular goods, API – American petroleum institute
The pipe is either steel plate that is welded or seamless tube that is formed.
The well is drilled to a depth that is considered ‘as deep as possible’. Casing is then lowered into the well/hole and cemented in place. At that point you could drill out the casing and continue to go deeper with the casing holding the well bore stable above.
what is the Application of API 5CT casing pipe?
According by usage can be divided into the sleeve pipe, surface casing, casing and production casing.
Each well depending on the depth of drilling and geological conditions, to use several layers of casing.
Therefore, the casing consumption accounts for over 70% of all the oil well pipe.
API 5CT casing pipe is used to support the oil and gas pipe wall, and to ensure the drilling process and the post-completion wells normal operation. After cementing casing to be used to go down, it different from tubing, drill pipe and can not be reused, a one-time consumable materials.