API 5CT Oil Casing with Buttress Thread Pipe
benefits of Using API 5ct oil casing with Buttress Thread Pipe API 5CT oil casing with buttress thread pipe is…
benefits of Using API 5ct oil casing with Buttress Thread Pipe
API 5CT oil casing with buttress thread pipe is a type of casing used in the Oil and gas industry that offers a number of benefits over other types of casing. The buttress thread design of this pipe provides a secure connection that is resistant to leaks and provides a high level of strength and durability. This makes it an ideal choice for use in demanding oil and gas drilling applications. seamless casing pipeOne of the key benefits of using API 5CT oil casing with buttress thread pipe is its ability to withstand high pressure and temperature conditions. The buttress thread design provides a tight Seal that prevents leaks and ensures that the casing can withstand the extreme conditions often encountered in oil and gas drilling operations. This makes it a reliable choice for use in challenging environments where other types of casing may fail.
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. |