Casing Pipes and Couplings for them
PURPOSE OF PIPES
The casing pipes are used for lining the oil and gas wells in the process of their construction and operation.
DISTINCTIVE FEATURES
The casing pipes are joined together with the help of coupling or inserted (integral) thread connections.
The casing pipes are manufactured in the following versions:
- high-strength;
- cold-resistant;
- corrosion-resistant;
- increased operating reliability;
- PREMIUM high-seal thread connections;
- special purpose;
- standard version
The casing pipes comply with the requirements of the following documents:
- API Spec 5CT, Spec 5B;
- GOST 632-80
- Technical Conditions of Company Standards agreed with the Customer
At the Customer’s request, the outer surface of casing pipes may be protected by an anticorrosive coating.
All pipes are marked and stamped in compliance with the requirements of the Regulatory Technical Documentation in force.
| Name of Regulatory Technical Document | Sizes of pipes | Wall thickness, mm | Length, m | Strength group | Type of thread connection | |
| Conventional | Outer | |||||
| Casing Pipes and Couplings for them GOST 632-80 | 114 | 114.3 | 5.2; 5.7 | Д | Triangular | |
| 6.4 | 63 to 11.7 | Д, E, Л, M | OTTM, OTTG | |||
| 7.4; 8.6; 10.2 | Д, K, E, Л, M, P | |||||
| 127 | 127 | 5.6 | Д | Triangular | ||
| 6.4 | 63 to 11.7 | Д, E, Л, M | OTTM, OTTG | |||
| 7.5; 9.2; 10.2 | Д, K, E, Л, M, P | |||||
| 10.7 | Д, K, E, Л | |||||
| 140 | 139.7 | 6.2 | Д | OTTM, OTTG | ||
| 7 | 63 to 11.7 | Д, K, E, Л, M | ||||
| 7.7; 9.2; 10.5 | Д, K, E, Л, M, P | |||||
| 146 | 146.1 | 6.5 | Д | OTTM, OTTG | ||
| 7.0; 7.7; 8.5; 9.5 | 63 to 11.7 | Д, K, E, Л | ||||
| 10.7 | Д, K, E, Л, M, P | |||||
| 168 | 168.3 | 7.3; 8.0; 8.9; 10.6; 12.1 | 63 to 11.7 | ДЛE, Л, M | OTTM, OTTG | |
| 178 | 177.8 | 8.1; 13.7 | 63 to 11.7 | Д, K, E, Л | OTTM | |
| 9.2; 10.4; 11.5; 12.7 | Д, K, E, Л | OTTM, OTTG | ||||
| 194 | 193.7 | 7.6; 8.3 | 63 to 11.7 | Д, K, E, Л | OTTM | |
| 9.5; 10.9; 12.7 | Д, K, E, Л | OTTM, OTTG | ||||
| 219 | 219.1 | 7.7; 8.9; 10.2; 11.4; 12.7; 14.2 | 63 to 11.7 | Д, K, E, Л, M, P | OTTM, OTTG | |
| 245 | 244.5 | 7.9; 8.9; 10.0; 11.1; 12.0; 13.8; 14.2; 15.9 | 63 to 11.7 | Д, K, E, Л, M, P | OTTM, OTTG | |
| 273 | 273.1 | 8.9; 10.2; 11/; 12.6; 13.8; 15.1; 16.5 | 63 to 11.7 | Д, K, E, Л, M, P | OTTM, OTTG | |
| 324 | 323.9 | 8.5 | Д | OTTM | ||
| 9.5 | 63 to 11.7 | Д, E, Л | ||||
| 11.0; 12.4; 14.0 | Д, K, E, Л, M, P | |||||
| Casing and Tubing API Spec 5CT | 114.3 | 6.35; 7.37; 8.56; 10.16 | II, III length group | H40; J55; K55; L80-1; N80; C90; R95; P110 | Type BC TMK FMC | |
| 127 | 6.43; 7.52; 9.19; 10.16; 11.10; 12.14; 12.70 | |||||
| 139.7 | 6.99; 7.72; 9.17; 10.54 | TMKGF, TMK FMC, LC, SC, BC | ||||
| 168.28 | 7.32; 8.94; 10.59; 12.06 | H40; J55; K55; M65; L80-1; N80; N80Q; C90; R95; P110 | ||||
| 177.8 | 8.05; 9.19; 10.36; 11.51; 12.65; 13.72 | H40; J55; K55; M65; L80-1; N80; N80Q; R95; P110 | TMKGF, type BC TMK FMC | |||
| 193.68 | 8.33; 9.52; 10.92; 12.70 | H40; J55; K55; N80; L80-1; L80- type Q; R95; P110 | ||||
| 219.08 | 8.94; 10.16; 11.43; 12.70; 14.15 | BC plain, LC, SC, TMK-GF TMK FMC | ||||
| 244.48 | 8.94; 10.03; 11.05; 11.99; 13.34; 15.11 | H40; J55; K55; M65; N80; L80-1; L80- type Q; R95; P110 | TMK FMC, TMK TTL-01 TMK-GF LC, SC, BC, plain | |||
| 273.1 | 8.89; 10.16; 11.43; 12.57; 13.84; 15.11 | J55; K55; M65; N80; L80-1; L80- type Q; R95; P110 | BC, plain, LC, SC, TMK FMC, TMK-GF | |||
| 339.7 | 9.65; 10.92; 12.19; 13.06 | Type BC, LC, SC, TMK FMC, TMK-GF | ||||
|
Steel Pipes Used as Сasing and Tubing for Wells in Oil and Gas Sector |
139.7 | 7.2 to 10.54 | 7.5 to 12.5 | J55, K55, M65, N80 type Q, N80 type 1, L80 type 1, C95, P110, C90, T95, Q125 | TMK FMC, TMK GF, TMK PF, TMK CWB, Buttress, LC, STC, OTTM, OTTG | |
| 168.28 | 7.32 to 12.06 | |||||
| 178 | 177.8 |
8.05; 9.19; 10.36; 11.51; 12.65; 13.72 |
||||
| 194 | 193.68 | 9.52; 10.92; 12.7; 14.27; 15.11 15.88 | ||||
| 245 | 244.48 | 8.94; 10.03; 11.05; 11.99; 13.84; 15.11 | ||||
| 273 | 273.05 | 10.16; 11.43; 12.57; 13.84; 15.11 | ||||
| 340 | 339.72 |
9.65; 10.92; 12.19; 13.06 |
||||
MECHANICAL PROPERTIES OF CASING PIPES AS PER GOST 632-80 AND API Spec 5CT
| Strength groups | Ultimate strength σB, MPa, at least |
Yield strength σT, MPa |
Modulus of elongation, δ, %, at least |
| GOST 632-80 | |||
| Д (version A) | 655 | 379 to 552 | 14.3 |
| K | 687 | At least 490 | 12 |
| E | 689 | 552 to 758 | 13 |
| Л | 758 | 655 to 862 | 12.3 |
| M | 862 | 758 to 965 | 10.8 |
| P | 1000 | 930 to 1137 | 9.5 |
| API Spec 5 CT/ISO 11960 | |||
| J55 | 517 | 379 to 552 | * |
| K55 | 655 | 379 to 552 | * |
| M65 | 586 | 448 to 586 | * |
| L80-1 | 655 | 552 to 655 | * |
| N80; N80Q | 689 | 552 to 758 | * |
| C95 | 724 | 655 to 758 | * |
| P110 | 862 | 758 to 965 | * |
| *It is calculated according to the formula set forth in API Spec 5CT/IS0 11960 | |||