English
A casing pup joint is a short section of casing pipe, typically ranging from 2 to 12 feet in length. It features the same type of thread connection as standard casing pipes. The primary function of a casing pup joint is to connect and extend the length of casing strings in oil and gas wells.
They are used to adjust the length of the casing string to fit specific well requirements, ensuring proper alignment and support in the wellbore. This helps maintain the integrity of the wellbore, prevents damage to the casing during drilling, and reduces the risk of leaks or other integrity issues.
Casing pup joints come in various lengths, weights, and grades to meet different operational needs. They are essential for connecting casing sections of the same or different diameters, and can also be used for special functions such as fluid diversion or downhole monitoring.
| Type | Casing Pup Joint, pup joint oil and gas, pup joint drilling, api 5ct Pup joint, perforated pup joint |
| Diameters: | 4-1/2" through 20" nominal O.D. |
| Weights: | Standard or Heavy Wall |
| Lengths: | 2, 3, 4, 6, 8, 10, 12 ft. Standard |
| (Other lengths available upon request) | |
| Grades: | J55 K55 N80 N80Q L80 P110 |
| Connections: | EUE, NUE, Buttress |
| Size | Type of Thread | O.D*L (mm) | Weight(kg) |
| 2-3/8" | NUE | 73.02*107.95 | 1.28 |
| 2-3/8" | EUE | 77.80*132.82 | 1.55 |
| 2-7/8" | NUE | 88.90*130.18 | 2.34 |
| 2-7/8" | EUE | 93.17*133.35 | 2.4 |
| 3-1/2" | NUE | 107.95*142.88 | 3.71 |
| 3-1/2" | EUE | 114.30*146.05 | 4.1 |
| 4" | NUE | 120.65*146.05 | 4.35 |
| 4" | EUE | 127.00*152.40 | 4.82 |
| 4-1/2" | NUE | 132.08*155.58 | 4.89 |
| 4-1/2" | EUE | 141.30*158.75 | 6.05 |
Allows fine-tuning of the casing string to match the exact depth of the wellbore, ensuring a perfect fit.
Enables replacement of damaged casing sections without the need to replace the entire casing string, saving time and money.
Provides adaptability in complex well designs, such as horizontal, directional, or multilateral wells.
Matches the diameter, material, and threading of the main casing, ensuring compatibility and maintaining structural integrity.
Helps align the casing string with wellhead equipment, ensuring proper spacing and connection.
Simplifies casing string assembly and adjustments, reducing downtime during drilling operations.
Maintains the same strength and pressure ratings as the main casing, ensuring safety and reliability.
