Tubing pipes and couplings for them
PURPOSE OF PIPES
The tubing pipes are used in the process of oil and gas well operation for transmission of liquids and gases inside the casing strings as well as for the repair and round-trip operations.
DISTINCTIVE FEATURES
The tubing pipes are connected together with the help of thread coupling connections.
Thread connections of tubing pipes assure the following:
- capacity of casing string drift in the designer well bores, including in the doglegs;
- sufficient durability under loads of all types and required integrity of pipe string connections;
- required resistance to wear and maintainability
One-hundred-per-cent of tubing pipes and couplings for them are subjected to nondestructive test in
compliance with the requirements of Standards in force.
The tubing pipes are manufactured in following versions and their combinations:
- very leak-tight;
- cold-resistant;
- corrosion-resistant;
- outside upset;
- with a packing assembly of polymeric material;
- with distinctive marking of couplings;
- standard version
The tubing pipes comply with the requirements as follows:
- API Spec 5CT/І5011960, 5 Spec 5B;
- GOST 633-80;
- Technical Conditions agreed with the Customer
At the Customer’s request, the outer surface of tubing pipes may be protected by anticorrosive coating.
All pipes are marked with painting and stamped in compliance with the requirements of
the Regulatory Technical Documentation in force.
The tubing pipes are delivered with the thread connections of pipes and couplings coated with grease lubricant and thread safety elements.
| Name of Regulatory Technical Document | Type of pipes | Sizes of pipes | Strength group | Type of thread connection | ||
| Passage diameter | Wall thickness, mm | Length, m | ||||
| Seamless Tubing Pipes and Couplings for them GOST 633-80 | Plain | 33.42 | 3.5 | 9.5 to 10.5 at the request 11 | Д, K, E |
Trapezoidal, very leak-tight |
| Plain | 48 | 4 | Д, K, E, Л | |||
|
Plain, outside upset, plain very leak-tight (HKM) |
60 | 5 | Д, K, E, Л, M | |||
| 73 | 5.0; 5.5; 7.0 | Д, K, E, Л, M | ||||
| 89 | 6.5; 8.0 | |||||
| 102 | 6.5 | |||||
| 114 | 7 | |||||
| Tubing and Coupling. Specifications. GOST R 52203-2004 | Unthreaded, outside upset | 27 | 3 | 6.1 to 10.0 | Kc | Triangular |
| Unthreaded | 27 | 3 | 6.1 to 10.0 | M, Mc | ||
| Unthreaded | 27 | 4 | 6.1 to 10.0 | Дc, Д, Kc, K, E, Ec, Л, Лc, M, Mc, P, Pc | ||
| Outside upset, plain; unthreaded | 33 | 3.5 | 6.1 to 10.0 | Kc | Triangular | |
| Unthreaded | 33 | 3.5 | Kc, M, Mc | |||
| 4.5 | 6.1 to 10.0 | Дc, Д Kc; K, E, Ec, Л, Лc, M, Mc, P, Pc | ||||
|
Outside upset, plain; unthreaded |
42 | 3.5 | 6.1 to 10.0 | Kc | Triangular | |
| Unthreaded | 42 | 3.5 | Kc; M, Mc | |||
| 5 | 6.1 to 10.0 | Дc, Д, Kc, K, E, Ec, Л, Лc, M, Mc, P, Pc | ||||
| Outside upset, plain, unthreaded | 48 | 4 | 6.1 to 10.0 | Kc; M, Mc | Triangular | |
| Unthreaded | 48 | 5.0; 6.5; 8.0 | 6.1 to 10.0 | ДE, Д, Kc, K, E, Ec, Л, Лc, M, Mc, P, Pc | ||
| Very leak-tight, integral joint, outside upset, plain, unthreaded | 60 | 5 | 6.1 to 10.0 | ДE, Д, Kc, K, E, Ec, Л, Лc, M, Mc, P, Pc |
Trapezoidal, Triangular |
|
| Unthreaded | 60 | 6.5; 7.5; 8.5 | 6.1 to 10.0 | Дc, ДKc, K, E, Ec, Л, Лc, M, Mc, P, Pc | ||
|
Very leak-tight, outside upset, plain, unthreaded |
73 | 5.5; 7.0 | 6.1 to 10.0 | Дc, ДKc, K, E, Ec, Л, Лc, M, Mc, P, Pc |
Trapezoidal, Triangular |
|
| Unthreaded | 73 | 8.0; 9.0; 10.0; 11.5 | 6.1 to 10.0 | Дc, ДKc, K, E, Ec, Л, Лc, M, Mc, P, Pc | ||
|
Very leak-tight, outside upset, plain, unthreaded |
102 | 6.5 | 6.1 to 10.0 | Дc, ДKc, K, E, Ec; Л, Лc; M, Mc, P, Pc |
Trapezoidal, Triangular |
|
| Unthreaded | 102 | 6,.0; 8.5; 10.5; 13.0; 15.5 | 6.1 to 10.0 | Дc; ДKc; K, E, Ec, Л, Лc, M, Mc; P, Pc | ||
|
Very leak-tight, outside upset, plain, unthreaded |
114 | 7 | 6.1 to 10.0 | Дc, Д Kc; K, E, Ec, Л, Лc, M, Mc, P, Pc |
Trapezoidal, Triangular |
|
| Unthreaded | 114 | 8.5; 10.0; 11.0; 13.0; 14.5; 16.0 | 6.1 to 10.0 | Дc; ДKc; K, E, Ec, Л, Лc, M, Mc, P, Pc | ||
| API Spec 5CT | Plain, outside upset | 33.42 | 3.5 | 9.5 to 10.5 at the request up to 11 | H40, 355, K55, N80, 1-80, C90, K95, Т95, P110 | |
| 48 | 4 | |||||
| 60 | 5 | |||||
| 73 | 5.5; 7.0 | |||||
| 89 | 6.5; 8.0 | |||||
| 102 | 6.5 | |||||
| 114 | 7 | |||||
MECHANICAL PROPERTIES OF TUBING PIPES AS PER GOST 633-80
| Index name | Nor of mechanical properties for steel of strength groups as follows: | |||||||
| Д | K | E | Л | M | Дc | Kc | Ec | |
| Tensile strength, at least MPa (kgf/cm2) | 655 (66.8) | 687 (70.0) | 689 (70.3) | 758 (77.3) | 823 (83.9) | 510 (52.0) | 647 (66.0) | 657 (67.0) |
| Yield strength | 379 (38,7) 552 (56.2) | 491 (50.0) | 552 (56.2) 758 (77.3) | 654 (66.8) 862 (87.9) | 724 (73.8) 921 (93.9) | 402 (41.0) 490 (50.0) | 519 (53,0) 617 (63,0) | 549 (56.0) 657 (67.0) |
| at least MPa (kgf/cm2) | ||||||||
| at least MPa (kgf/cm2) | ||||||||
| Modulus of elongation, %, at least | 14.3 | 12 | 13 | 12.3 | 11.3 | 20 | 18 | 16 |