PUP JOINTS OF WELL CASING AND WELL TUBING
The pup joints of well casing and well tubing are used during construction and operation of oil and gas wells. The well casing and pup joints are interconnected by means of coupling threaded connections of OTTM, OTTG, BUTTRESS types and premium threads of TPH-VG type. The pup joints and well tubing are connected by means of threaded coupling connections of NKT and NKM types of plain-end pipe.Threaded pipe and pup joint connections ensure:
- construction and operation of complex-profile well bore strings, including those in the intensive deviation intervals;
- sufficient strength for all load types and necessary leak-proofness of pipe string connections; the pup joints are made taking into consideration the requirements of GOST 632-80, GOST 633-80, АРI Sрес 5СТ, and special requirements of the consumer.
PERFORMANCE SPECIFICATIONS
| Rated size | Pup joint | Coupling | |||||
| Outer diameter D | Wall thickness s | Inner diameter d | Weight1 m, kg | Outer diameter Dm | Length L, м | Weight | |
| 33 | 33.4 | 3.5 | 26.4 | 2.6 | 42.2 | 84 | 0.4 |
| 42 | 42.2 | 3.5 | 35.2 | 3.3 | 52.2 | 90 | 0.6 |
| 48 | 48.3 | 4.0 | 40.3 | 4.4 | 55.9 | 96 | 0.5 |
| 60 | 60.3 | 5.0 | 50.3 | 6.8 | 73.0 | ПО | 1.3 |
| 73 | 73.0 | 5.5 | 62.0 | 9.2 | 88.9 | 132 | 2.4 |
| 7.0 | 59.0 | 11.4 | |||||
| 89 | 88.9 | 6.5 | 75.9 | 13.2 | 108.0 | 146 | 3.6 |
| 102 | 101.6 | 6.5 | 83.6 | 15.2 | 120.6 | 150 | 4.5 |
| 114 | 114.3 | 7.0 | 100.3 | 18.5 | 132.1 | 156 | 5.1 |
WELL CASING PUP JOINT GRADES
| Rated size of the pup joint, mm | Wall thickness, mm | Pup joint length, mm | Connection type | ||||||||||
| with triangular thread | OTTM | OTTG | BTS | ||||||||||
| short | elongated-U | ||||||||||||
| 102 | 6.5 | 500, 1000, 1500, 2000, 2500, 3000, 3500, 4000 | D | DELM | DELM | - | DELM | ||||||
| 114 | 5.2 5.7 6.4 | 7.4 8.6 10.2 | 500, 1000, 1500, 2000, 2500, 3000, 3500, 4000 | D D D | - - - | - - DELM | DELMR DELMRT LMRT | - - DELM | DELMR DELMRT LMRT | - - - | - DELMRT LMRT | - - DELM | DELMR DELMRT LMRT |
| 127 | 5.6 6.4 7.5 | 9.2 10.2 | 500, 1000,1500, 2000, 2500, 3000, 3500, 4000 | D D D | - - | - DELM DELMRT | DELMRT DELMRT | - DELM DELMRT | DELMRT DELMRT | - - - | DELMRT DELMRT | - DELM DELMRT | DELMRT DELMRT |
| 140 | 6.2 7.0 7.7 | 9.2 10.5 | 500, 1000, 1500, 2000,2500, 3000, 3500, 4000 | D D D | - - - | - DELM DELMRT | DELMRT DELMRT | D DELM DELMRT | DELMRT DELMRT | - - - | DELMRT DELMRT | D DELM DELMRT | DELMRT DELMRT |
| 146 | 6.5 7.0 7.7 | 8.5 9.6 10.7 | 500, 1000,1500, 2000, 2500, 3000, 3500, 4000 | D D D | - - - | - DELM DELMRT | DELMRT DELMRT DELMRT | D D DELM | DELMRT DELMRT DELMRT | - - - | DELMRT DELMRT | D D DELM | DELMRT DELMRT DELMRT |
| 168 | 7.3 8.0 8.9 | 10.6 12.1 | 500, 1000, 1500, 2000, 2500, 3000, 3500, 4000 | 7,3 8,0 8,9 | - - - | DE DEL DELMRT | DELMRT DELMRT | DE DELM DELMRT | DELMRT DELMRT | - - DELMRT | DELMRT DELMRT | DE DEL DELMRT | DELMRT DELMRT |
| 178 | 5.9 6.9 8.1 9.2 10.4 | 11.5 12.7 13.7 15.0 | 500, 1000, 1500, 2000, 2500, 3000, 3500, 4000 | D D D D | - - - - | - - DEL DELMRT DELMRT | DELMRT DELMRT ELMRT LMRT | - D DEL DELMRT DELMRT | DELMRT DELMRT ELMRT LMRT | - - - DELMRT DELMRT | DELMRT DELMRT ELMRT LMRT | - D DEL DELMRT DELMRT | DELMRT DELMRT ELMRT LMRT |
| 194 | 7.6 8.3 9.3 | 10.9 12.7 16.1 | 500, 1000,1500, 2000, 2500, 3000, 3500, 4000 | D D - | - - - | - DELMRT DELMRT | DELMRT DELMRT LMRT | D DELMRT DELMRT | DELMRT DELMRT LMRT | - - DELMRT | DELMRT DELMRT LMRT | D DELMRT DELMRT | DELMRT DELMRT LMRT |
| 219 | 6.7 7.7 8.9 10.2 | 11.4 12.7 14.2 | 500, 1000, 1500, 2000, 2500,3000, 3500, 4000 | D D D D | - - - | - - DELM DELMR | DELMRT DELMRT ELMRT | - D DELM DELMR | DELMRT DELMRT ELMRT | - - DELM DELMR | DELMRT DELMRT ELMRT | - D DELM DELMR | DELMRT DELMRT ELMRT |
| 245 | 7.9 8.9 10.0 11.1 | 12.0 13.8 15.9 | 500, 1000, 1500, 2000, 2500, 3000, 3500, 4000 | D D D - | - - - | - DELM DELMR DELMRT | DELMRT DELMRT LMRT | D DELM DELMR DELMRT | DELMRT DELMRT LMRT | - DELM DELMR DELMRT | DELMRT DELMRT LMRT | D DELM DELMR DELMRT | DELMRT DELMRT LMR |
