What’s The Difference Between Casing Pipe And Drill Pipe?
Exploring the differences between Casing Pipe and drill Pipe: A comprehensive guide When it comes to drilling for oil and gas, two of the most important pieces of equipment are casing pipe and drill pipe. While they may look similar, there are some key differences between the two that are important to understand. In this…
Exploring the differences between Casing Pipe and drill Pipe: A comprehensive guide
When it comes to drilling for oil and gas, two of the most important pieces of equipment are casing pipe and drill pipe. While they may look similar, there are some key differences between the two that are important to understand. In this guide, we’ll explore the differences between casing pipe and drill pipe, so you can make an informed decision when it comes to your drilling operations.
Casing Pipe
Casing pipe is a type of steel pipe that is used to line the walls of a drilled well. It is typically made from a variety of different grades of steel, including API 5ct, J55, k55, n80, l80, p110, and Q125. Casing pipe is designed to be strong and durable, and it is typically cemented into place to provide a secure Seal.
Casing pipe is used to protect the wellbore from collapsing, and it also helps to prevent contamination from entering the well. It is typically installed in sections, and each section is connected with a Threaded connection.
Drill Pipe
Drill pipe is a type of steel pipe that is used to transmit rotational force and torque from the surface to the drill bit. It is typically made from a variety of different grades of steel, including API 5DP, E75, X95, G105, and S135. Drill pipe is designed to be strong and durable, and it is typically connected with a threaded connection.
| Tensile and hardness requirements | |||||||||
| Grade | Yield strength MPa | Tensile Strength | Hardness a,c | specified Wall thickness | Allowable Hardness Variation b | ||||
| Type | Total Elongation Under Load | min MPa | max | ||||||
| min | max | HRC | HBW | mm | HRC | ||||
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| 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 | — | — | — | — |
| R95 | — | 0.5 | 655 | 758 | 724 | — | — | — | — |
| L80 L80 | 1 | 0.5 | 552 | 655 | 655 | 23 | 241 | — | — |
| L80 | 9Cr 13Cr | 0.5 | 552 | 655 | 655 | 23 | 241 | — | — |
| 0.5 | 552 | 655 | 655 | 23 | 241 | — | — | ||
| c90 | 1 | 0.5 | 621 | 724 | 689 | 25.4 | 255 | £12.70 | 3 |
| 12.71 to 19.04 | 4 | ||||||||
| 19.05 to 25.39 | 5 | ||||||||
| ³ 25.40 | 6 | ||||||||
| T95 | 1 | 0.5 | 655 | 758 | 724 | 25.4 | 255 | £12.70 | 3 |
| 12.71 to 19.04 | 4 | ||||||||
| 19.05 to 25.39 | 5 | ||||||||
| ³ 25.40 | 6 | ||||||||
| C110 | — | 0.7 | 758 | 828 | 793 | 30 | 286 | £12.70 | 3 |
| 12.71 to 19.04 | 4 | ||||||||
| 19.05 to 25.39 | 5 | ||||||||
| ³ 25.40 | 6 | ||||||||
| P110 | — | 0.6 | 758 | 965 | 862 | — | — | — | — |
| Q125 | 1 | 0.65 | 862 | 1034 | 931 | b | — | £12.70 | 3 |
| 12.71 to 19.04 19.05 | 4 | ||||||||
| 5 | |||||||||
| a In case of dispute, laboratory Rockwell C hardness testing shall be used as the referee method. | |||||||||
| b No hardness limits are specified, but the maximum variation is restricted as a manufacturing control in accordance with 7.8 and 7.9. | |||||||||
| c For through-wall hardness tests of Grades L80 (all types), C90, T95 and C110, the requirements stated in HRC scale are for maximum mean hardness number. | |||||||||
Drill pipe is used to transmit rotational force and torque from the surface to the drill bit, and it also helps to provide a pathway for the drilling fluid to travel down to the drill bit. It is typically installed in sections, and each section is connected with a threaded connection.
Conclusion
Oil Tube chinese high-quality Factory,casing pipe china best Supplier,Casing pipe and drill pipe are both essential components of any drilling operation. While they may look similar, there are some key differences between the two that are important to understand. Casing pipe is used to line the walls of a drilled well, while drill pipe is used to transmit rotational force and torque from the surface to the drill bit. By understanding the differences between casing pipe and drill pipe, you can make an informed decision when it comes to your drilling operations.
