The Importance of High quality seamless casing Pipe in API 5ct J55/ K55 grade
High Quality Seamless casing pipe 6 Years API 5CT J55/K55
| Chemical composition, Mass Fraction (%) | ||||||||||||||
| Grade | C | Mn | Mo | Cr | Ni | Cu | P | S | Si | |||||
| Type | min | max | min | max | min | max | min | max | max | max | max | max | max | |
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 |
| H40 | — | — | — | — | — | — | — | — | — | — | — | — | 0.03 | — |
| J55 | — | — | — | — | — | — | — | — | — | — | — | — | 0.03 | — |
| K55 | — | — | — | — | — | — | — | — | — | — | — | — | 0.03 | — |
| N80 | 1 | — | — | — | — | — | — | — | — | — | — | 0.03 | 0.03 | — |
| N80 | Q | — | — | — | — | — | — | — | — | — | — | 0.03 | 0.03 | — |
| R95 | — | — | 0.45 c | — | 1.9 | — | — | — | — | — | — | 0.03 | 0.03 | 0.45 |
| L80 | 1 | — | 0.43 a | — | 1.9 | — | — | — | — | 0.25 | 0.35 | 0.03 | 0.03 | 0.45 |
| L80 | 9Cr | — | 0.15 | 0.3 | 0.6 | 0.9 | 1.1 | 8 | 10 | 0.5 | 0.25 | 0.02 | 0.03 | 1 |
| L80 | 13Cr | 0.15 | 0.22 | 0.25 | 1 | — | — | 12 | 14 | 0.5 | 0.25 | 0.02 | 0.03 | 1 |
| C90 | 1 | — | 0.35 | — | 1.2 | 0.25 b | 0.85 | — | 1.5 | 0.99 | — | 0.02 | 0.03 | — |
| T95 | 1 | — | 0.35 | — | 1.2 | 0.25 b | 0.85 | 0.4 | 1.5 | 0.99 | — | 0.02 | 0.03 | — |
| C110 | — | — | 0.35 | — | 1.2 | 0.25 | 1 | 0.4 | 1.5 | 0.99 | — | 0.02 | 0.03 | — |
| P110 | e | — | — | — | — | — | — | — | — | — | — | 0.030 e | 0.030 e | — |
| Q125 | 1 | — | 0.35 | 1.35 | — | 0.85 | — | 1.5 | 0.99 | — | 0.02 | 0.01 | — | |
| NOTE Elements shown shall be reported in product analysis. | ||||||||||||||
| a The carbon content for L80 may be increased up to 0.50 % maximum if the product is Oil-quenched or polymer-quenched. | ||||||||||||||
| b The molybdenum content for Grade C90 Type 1 has no minimum tolerance if the Wall thickness is less than 17.78 mm. | ||||||||||||||
| c The carbon content for R95 may be increased up to 0.55 % maximum if the product is oil-quenched. | ||||||||||||||
| d The molybdenum content for T95 Type 1 may be decreased to 0.15 % minimum if the wall thickness is less than 17.78 mm. | ||||||||||||||
| e For EW Grade P110, the phosphorus content shall be 0.020 % maximum and the sulfur content 0.010 % maximum. | ||||||||||||||
The Oil and gas industry is a complex and demanding field that requires the use of high-quality equipment and materials. One such essential component is the seamless casing pipe, which plays a crucial role in the extraction and transportation of oil and gas. In this article, we will explore the importance of high-quality seamless casing pipe in API 5CT J55/K55 grade and its significance in ensuring the efficiency and safety of oil and gas operations.
| Labels | Outside Diameter (d/mm) |
T&C (kg/m) |
Wall thickness (t/mm) |
Type of end-finish | |||||||
| 1 | 2 | J55/K55 | M65 | L80/R95 | N80-1/Q | C90/T95 | P110 | Q125 | |||
| 4-1/2 | 9.50 | 114.30 | 14.14 | 5.21 | PS | PS | – | – | – | – | – |
| 10.50 | 114.30 | 15.63 | 5.69 | PSB | PSB | – | – | – | – | – | |
| 11.60 | 114.30 | 17.26 | 6.35 | PSLB | PLB | PLB | PLB | PLB | PLB | – | |
| 13.50 | 114.30 | 20.09 | 7.37 | – | PLB | PLB | PLB | PLB | PLB | – | |
| 15.10 | 114.30 | 22.47 | 8.56 | – | – | – | – | – | PLB | PLB | |
| 5 | 11.50 | 127.00 | 17.11 | 5.59 | PS | PS | – | – | – | – | – |
| 13.00 | 127.00 | 19.35 | 6.43 | PSLB | PSLB | – | – | – | – | – | |
| 15.00 | 127.00 | 22.32 | 7.52 | PSLB | PLB | SLB | PLB | PLB | PLB | ||
| 18.00 | 127.00 | 26.79 | 9.19 | – | PLB | SLB | PLB | PLB | PLB | PLB | |
| 21.40 | 127.00 | 31.85 | 11.10 | – | PLB | PLB | PLB | PLB | PLB | PLB | |
| 23.20 | 127.00 | 34.53 | 12.14 | – | – | PLB | PLB | PLB | PLB | PLB | |
| 24.10 | 127.00 | 35.87 | 12.70 | – | – | PLB | PLB | PLB | PLB | PLB | |
| 5-1/2 | 14.00 | 139.70 | 20.83 | 6.20 | PS | PS | – | – | – | – | – |
| 15.50 | 139.70 | 23.07 | 6.98 | PSLB | PSLB | – | – | – | – | – | |
| 17.00 | 139.70 | 25.30 | 7.72 | PSLB | PLB | PLB | PLB | PLB | PLB | – | |
| 20.00 | 139.70 | 29.76 | 9.17 | – | PLB | PLB | PLB | PLB | PLB | – | |
| 23.00 | 139.70 | 34.23 | 10.54 | – | PLB | PLB | PLB | PLB | PLB | PLB | |
| 26.80 | 139.70 | 39.88 | 12.70 | – | – | – | – | P | – | – | |
| 29.70 | 139.70 | 44.20 | 14.27 | – | – | – | – | P | – | – | |
| 32.60 | 139.70 | 48.52 | 15.88 | – | – | – | – | P | – | – | |
| 35.30 | 139.70 | 52.53 | 17.45 | – | – | – | – | P | – | – | |
| 38.00 | 139.70 | 56.55 | 19.05 | – | – | – | – | P | – | – | |
| 40.50 | 139.70 | 60.27 | 20.62 | – | – | – | – | P | – | – | |
| 43.10 | 139.70 | 64.14 | 22.22 | – | – | – | – | P | – | – | |
| 6-5/8 | 20.00 | 168.28 | 29.76 | 7.32 | PSLB | PSLB | – | – | – | – | – |
| 24.00 | 168.28 | 35.72 | 8.94 | PSLB | PLB | PLB | PLB | PLB | PLB | – | |
| 28.00 | 168.28 | 41.67 | 10.59 | – | PLB | PLB | PLB | PLB | PLB | – | |
| 32.00 | 168.28 | 47.62 | 12.06 | – | – | PLB | PLB | PLB | PLB | PLB | |
| 7 | 17.00 | 177.80 | 25.30 | 5.87 | – | – | – | – | – | – | – |
| 20.00 | 177.80 | 29.76 | 6.91 | PS | PS | – | – | – | – | – | |
| 23.00 | 177.80 | 34.23 | 8.05 | PSLB | PLB | PLB | PLB | PLB | – | – | |
| 26.00 | 177.80 | 38.69 | 9.19 | – | PLB | PLB | PLB | PLB | PLB | – | |
| 29.00 | 177.80 | 43.16 | 10.36 | – | PLB | PLB | PLB | PLB | PLB | – | |
| 32.00 | 177.80 | 47.62 | 11.51 | – | PLB | PLB | PLB | PLB | PLB | – | |
| 35.00 | 177.80 | 52.09 | 12.65 | – | – | PLB | PLB | PLB | PLB | PLB | |
| 38.00 | 177.80 | 56.55 | 13.72 | – | – | PLB | PLB | PLB | PLB | PLB | |
| 42.70 | 177.80 | 63.55 | 15.88 | – | – | – | – | P | – | – | |
| 46.40 | 177.80 | 69.05 | 17.45 | – | – | – | – | P | – | – | |
| 50.10 | 177.80 | 74.56 | 19.05 | – | – | – | – | P | – | – | |
| 53.60 | 177.80 | 79.77 | 20.62 | – | – | – | – | P | – | – | |
| 57.10 | 177.80 | 84.98 | 22.22 | – | – | – | – | P | – | – | |
| 7-5/8 | 24.00 | 193.68 | 35.72 | 7.62 | – | – | – | – | – | – | |
| 26.40 | 193.68 | 39.29 | 8.33 | PSLB | PSLB | PLB | PLB | PLB | – | – | |
| 29.70 | 193.68 | 44.20 | 9.52 | – | PLB | PLB | PLB | PLB | PLB | – | |
| 33.70 | 193.68 | 50.15 | 10.92 | – | PLB | PLB | PLB | PLB | PLB | – | |
| 39.00 | 193.68 | 58.04 | 12.70 | – | – | PLB | PLB | PLB | PLB | PLB | |
| 42.80 | 193.68 | 63.69 | 14.27 | – | – | PLB | PLB | PLB | PLB | PLB | |
| 45.30 | 193.68 | 67.42 | 15.11 | – | – | PLB | PLB | PLB | PLB | PLB | |
| 47.10 | 193.68 | 70.09 | 15.88 | – | – | PLB | PLB | PLB | PLB | PLB | |
| 51.20 | 193.68 | 76.20 | 17.45 | – | – | – | – | P | – | – | |
| 55.30 | 193.68 | 82.30 | 19.05 | – | – | – | – | P | – | – | |
| 7-3/4 | 46.10 | 196.85 | 68.61 | 15.11 | – | – | P | P | P | P | P |
| 8-5/8 | 24.00 | 219.08 | 35.72 | 6.71 | PS | PS | – | – | – | – | – |
| 28.00 | 219.08 | 41.67 | 7.72 | PS | – | – | – | – | – | ||
| 32.00 | 219.08 | 47.62 | 8.94 | PSLB | PSLB | – | – | – | – | – | |
| 36.00 | 219.08 | 53.58 | 10.16 | PSLB | PSLB | PLB | PLB | PLB | PLB | – | |
| 40.00 | 219.08 | 59.53 | 11.43 | – | PLB | PLB | PLB | PLB | PLB | – | |
| 44.00 | 219.08 | 65.48 | 12.70 | – | – | PLB | PLB | PLB | PLB | – | |
| 49.00 | 219.08 | 72.92 | 14.15 | – | – | PLB | PLB | PLB | PLB | PLB | |
| 9-5/8 | 32.30 | 244.48 | 48.07 | 7.92 | – | – | – | – | – | – | – |
| 36.00 | 244.48 | 53.58 | 8.94 | PSLB | PSLB | – | – | – | – | – | |
| 40.00 | 244.48 | 59.53 | 10.03 | PSLB | PSLB | PLB | PLB | PLB | – | – | |
| 43.50 | 244.48 | 64.74 | 11.05 | – | PLB | PLB | PLB | PLB | PLB | – | |
| 47.00 | 244.48 | 69.95 | 11.99 | – | PLB | PLB | PLB | PLB | PLB | PLB | |
| 53.50 | 244.48 | 79.62 | 13.84 | – | – | PLB | PLB | PLB | PLB | PLB | |
| 58.40 | 244.48 | 86.91 | 15.11 | – | – | PLB | PLB | PLB | PLB | PLB | |
| 59.40 | 244.48 | 88.40 | 15.47 | – | – | – | – | P | – | – | |
| 64.90 | 244.48 | 96.58 | 17.07 | – | – | – | – | P | – | – | |
| 70.30 | 244.48 | 104.62 | 18.64 | – | – | – | – | P | – | – | |
| 75.60 | 244.48 | 112.51 | 20.24 | – | – | – | – | P | – | – | |
| 10-3/4 | 32.75 | 273.05 | 48.74 | 7.09 | – | – | – | – | – | – | – |
| 40.50 | 273.05 | 60.27 | 8.89 | PSB | PSB | – | – | – | – | – | |
| 45.50 | 273.05 | 67.71 | 10.16 | PSB | PSB | – | – | – | – | – | |
| 51.00 | 273.05 | 75.90 | 11.43 | PSB | PSB | PSB | PSB | PSB | PSB | – | |
| 55.50 | 273.05 | 82.60 | 12.57 | – | PSB | PSB | PSB | PSB | PSB | – | |
| 60.70 | 273.05 | 90.33 | 13.84 | – | – | – | – | PSB | PSB | PSB | |
| 65.70 | 273.05 | 97.77 | 15.11 | – | – | – | – | PSB | PSB | PSB | |
| 73.20 | 273.05 | 108.94 | 17.07 | – | – | – | – | P | – | – | |
| 79.20 | 273.05 | 117.87 | 18.64 | – | – | – | – | P | – | – | |
| 85.30 | 273.05 | 126.94 | 20.24 | – | – | – | – | P | – | – | |
| 11-3/4 | 42.00 | 298.45 | 62.50 | 8.46 | – | – | – | – | – | – | – |
| 47.00 | 298.45 | 69.95 | 9.53 | PSB | PSB | – | – | – | – | – | |
| 54.00 | 298.45 | 80.36 | 11.05 | PSB | PSB | – | – | – | – | – | |
| 60.00 | 298.45 | 89.29 | 12.42 | PSB | PSB | PSB | PSB | PSB | PSB | PSB | |
| 65.00 | 298.45 | 96.73 | 13.56 | – | – | P | P | P | P | P | |
| 71.00 | 298.45 | 105.66 | 14.78 | – | – | P | P | P | P | P | |
| 13-3/8 | 48.00 | 339.72 | 71.43 | 8.38 | – | – | – | – | – | – | – |
| 54.50 | 339.72 | 81.11 | 9.65 | PSB | PSB | – | – | – | – | – | |
| 61.00 | 339.72 | 90.78 | 10.92 | PSB | PSB | – | – | – | – | – | |
| 68.00 | 339.72 | 101.20 | 12.19 | PSB | PSB | PSB | PSB | PSB | PSB | – | |
| 72.00 | 339.72 | 107.15 | 13.06 | – | – | PSB | PSB | PSB | PSB | PSB | |
| 16 | 65.00 | 406.40 | 96.73 | 9.53 | – | – | – | – | – | – | – |
| 75.00 | 406.40 | 111.62 | 11.13 | PSB | PSB | – | – | – | – | – | |
| 84.00 | 406.40 | 125.01 | 12.57 | PSB | PSB | – | – | – | – | – | |
| 109.00 | 406.40 | 162.21 | 16.66 | P | – | P | P | – | P | P | |
| 18-5/8 | 87.50 | 473.08 | 130.22 | 11.05 | PSB | PSB | – | – | – | – | – |
| 20 | 94.00 | 508.00 | 139.89 | 11.13 | PSLB | PSLB | – | – | – | – | – |
| 106.50 | 508.00 | 158.49 | 12.70 | PSLB | PSLB | – | – | – | – | – | |
| 133.00 | 508.00 | 197.93 | 16.13 | PSLB | – | – | – | – | – | – | |
Seamless casing pipes are used in oil and gas wells to provide structural support and prevent the collapse of the wellbore. They are typically made from carbon or alloy steel and are designed to withstand high pressure and extreme temperatures. The API 5CT J55/K55 grade is one of the most commonly used grades for seamless casing pipes due to its excellent mechanical properties and resistance to corrosion.
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One of the primary reasons why high-quality seamless casing pipes are crucial in API 5CT J55/K55 grade is their ability to withstand the harsh conditions encountered in oil and gas wells. These pipes are subjected to immense pressure, corrosive fluids, and high temperatures, making it essential for them to have superior strength and durability. Inferior quality pipes can lead to catastrophic failures, resulting in costly Repairs, production delays, and even environmental hazards.
Furthermore, high-quality seamless casing pipes in API 5CT J55/K55 grade ensure the integrity of the wellbore. They act as a barrier between the well and the surrounding formations, preventing the migration of fluids and gases. This is particularly important in preventing contamination of groundwater and the release of harmful substances into the environment. By using high-quality seamless casing pipes, oil and gas Companies can minimize the risk of leaks and spills, protecting both the environment and human health.
Another significant advantage of high-quality seamless casing pipes is their contribution to the overall efficiency of oil and gas operations. These pipes are designed to have a smooth interior surface, which reduces friction and allows for the efficient flow of oil and gas. This not only maximizes production rates but also minimizes energy consumption and operational costs. By investing in high-quality seamless casing pipes, oil and gas companies can optimize their production processes and improve their bottom line.
Moreover, high-quality seamless casing pipes in API 5CT J55/K55 grade are essential for ensuring the safety of oil and gas workers. The extraction and transportation of oil and gas involve numerous hazards, and the use of inferior quality pipes can significantly increase the risk of accidents and injuries. By using high-quality seamless casing pipes, companies can provide a safe working environment for their employees and reduce the likelihood of accidents caused by pipe failures.
In conclusion, the importance of high-quality seamless casing pipes in API 5CT J55/K55 grade cannot be overstated. These pipes play a critical role in the oil and gas industry, providing structural support, preventing wellbore collapse, ensuring the integrity of the well, and optimizing production processes. By investing in high-quality seamless casing pipes, oil and gas companies can enhance the efficiency and safety of their operations, while also minimizing environmental risks. Therefore, it is crucial for companies to prioritize the use of high-quality seamless casing pipes to achieve long-term success in the oil and gas industry.
