differences between N-80 and L-80 Casing Pipe
ASTM A335 alloy seamless steel pipe Gr. P22, 3 inch SCH 120
November 3, 2016
API 5DP drill pipe, Grade E75, OD 127mm , wall thickness 12.7mm
November 10, 2016
Macaroni Tubing: 1 1/4″– 2 1/16″ Nom.
Grades: J55, K55, N80, L80, P110
Specializeds:.
Threading.
Heat treating.
External upset.
Wandering (Full-length, or simply ends).
Hydrostatic Testing.
Full third-party examination capabilities (EMI, SEA, and Weld Line).
Couplings– EUE, AB Modified, denied, unique clearance couplings.
Finishing to client specifications.
N80 Casing Pipe Description
N80 steel casing pipe is a crucial tool utilized in oil well drilling (Other important tools consist of drill pipe, core barrel, casing, drill collar, little size steel tube used in drilling, etc.). This casing tube is made from steel of N80 grade. It is used for reinforcing the well wall. It is likewise a tunnel that provides petroleum from underground to surface area. This item is a completion tool used after the drilling procedure and in the past well cementation.
1. The thread and coupling of this steel casing pipe are specially processed which have smooth surface area without any burr, tear or other flaws. These defects might have a bad influence on the products’ strength and connection.
4. The sizes of this pipes vary from 41/2″ to 20″. All pipes are produced strictly in accordance with API requirements.
N80 steel casing pipe is an essential tool used in oil well drilling (Other crucial tools consist of drill pipe, core barrel, casing, drill collar, little size steel tube utilized in drilling, and so on). The thread and coupling of this steel casing pipe are specially processed which have smooth surface area without any burr, tear or other problems.
API-5CT N80 casing pipe contains N80-1 and N80-Q types. Those 2 products are definitely consistent concerning the chemical structure and mechanical attributes, they are simply different in the heat treatment.
Throughout heat treatment, N80-1 steel is treated by stabilizing and tempering, while N80Q steel is treated by quenching and tempering. For that reason, the collapsing strength and internal pressure strength of N80Q are greater than that of N80-1. When N80 casing is picked, n80-1 or N80Q ought to be clearly shown by the designer.
As its mechanical properties are higher than J55 and K55 types, it might really well be made use of to certain a little bit more challenging developments. With deeper downhole depth than J55 and K55 types, it can be requested the exploitation of middle-level oil and gas.
Due to the high ability of N80 product, those API-5CT casing pipes are broadly used in gas as well as coal bed methane extraction, and geothermal wells.
Specifications
| Material: | L80, steel grade |
| Outer Diameter: | 4 1/2″-20″, (114.3-508mm) |
| Wall Thickness: | 5.12-16.13mm |
| Thread Type: | Buttress thread casing, Long round thread casing, Short round thread casing |
| Function: | It is used to protect the tubing pipe. |
Parameters
| Group | Steel Grade | Type | Carbon | Manganese | Molybdenum | Chromium |
Nickel Max. |
Copper Max. |
Phosphorus Max. |
Sulfur Max. |
Silicon 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 |
| 2 | L80 | 1 | – | 0.43 | – | 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 | |
| Any product is subject oil quenching process above, the upper limit of the carbon content of L80 steel grade can be increased to 0.50%. | |||||||||||||||
API 5CT L80 petroleum casing pipe is the lifeline to preserve the operation of the oil well. The geological conditions are various in addition to the underground dynamics are complicated and disorderly. Pipes undergo be dictated under numerous forces, such as tensile force, pressure, flexing force, and torsional tension. Under such scenarios the need for remarkable quality for the casing pipe is must. In case of any failure, devastating results such as production disturbance or well termination are inescapable.
7 Comments
What grade of steel is L80?
API L80 is manufactured to API specification 5CT. This is a controlled yield strength material with a hardness testing requirement. L80 is often used in wells with sour (H2S) environments. API C90 is an API controlled yield strength grade generally for use in sour condensate wells.
What is the yield strength of N80 tubing?
Yield strength for N80 type Q and type 1, is 552 Mpa to 758 Mpa.
API 5CT Grade N80 Tubing Material Supplier, N80 Casing Pipe …
API 5CT N80 Oil Casing Pipe
Specification includes 1.9 inch(48.3mm), 2 7/8 inch(73.03mm), 2 3/8 inch(60.3mm), 3 1/2 inch(88.9mm), 4 1/2 inch(114.3mm), 4 inch(101.6mm) etc. N80 mechanical properties are higher than other types of API 5CT. The oilfield tubing can be classified as EUE type and NUE type.
What is the difference between N 80 and L 80 tubing?
The N80 grade is normally less expensive than L80 grades. L80—A restricted yield-tubing grade that is available in Type 1, 9 Cr, or 13 Cr. Type 1 is less expensive than 9 Cr and 13 Cr but more subject to weight-loss corrosion. L80 Type 1 is used commonly in many oil and gas fields because of higher strength than J55.