Understanding the Benefits of Using API 5ct N80 casing for 7 Inch Wells
API 5CT n80 casing is a type of steel Pipe used in Oil and gas drilling operations. It is designed to withstand high pressure and provide a reliable Seal between the wellbore and the casing. The N80 grade of steel is a high-strength, low–alloy steel that is used in a variety of applications, including oil and gas drilling.
Using API 5CT N80 Casing for 7 inch wells offers a number of benefits. First, the N80 grade of steel is strong and durable, making it ideal for use in high-pressure environments. It is also corrosion-resistant, which helps to ensure that the casing will remain intact and provide a reliable seal for the duration of the well’s life.
| Calculated Mass c | |||||||||||
| Nominal Linear Mass T& C b,c | Wall Thick- ness | em, Mass Gain or Loss Due to End Finishing d | |||||||||
| Labels a | Outside Diameter | Inside Diameter | Drift Diameter | Plain- end | kg | ||||||
| round Thread | Buttress Thread | ||||||||||
| wpe | |||||||||||
| D | kg/m | t | D | mm | kg/m | Short | Long | RC | SCC | ||
| mm | mm | mm | |||||||||
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 7 | 17 | 177.8 | 25.6 | 5.87 | 166.06 | 162.88 | 24.89 | 7.61 | — | — | — |
| 7 | 20 | 177.8 | 29.91 | 6.91 | 163.98 | 160.8 | 29.12 | 6.74 | — 7.94 | — 8.28 | — 0.58 |
| 7 | 23 | 177.8 | 34.67 | 8.05 | 161.7 | 158.75 e 158.52 156.24 153.90 | 33.7 | 6.26 | 7.94 | 8.28 | 0.58 |
| 7 | 23 | 177.8 | 34.67 | 8.05 | 161.7 | 152.40 e | 33.7 | 6.26 | 7.37 | 7.65 | –0.54 |
| 7 | 26 | 177.8 | 39.14 | 9.19 | 159.42 | 151.6 | 38.21 | 5.79 | 6.79 | 7.13 | –0.69 |
| 7 | 29 | 177.8 | 43.6 | 10.36 | 157.08 | 149.32 | 42.78 | — | 6.23 | 6.4 | –1.31 |
| 7 | 32 | 177.8 | 47.92 | 11.51 | 154.78 | 147.18 | 47.2 | — | 6.23 | 6.4 | –1.31 |
| 7 | 32 | 177.8 | 47.92 | 11.51 | 154.78 | 142.86 | 47.2 | — | 5.68 | 5.79 | –1.91 |
| 7 | 35 | 177.8 | 52.09 | 12.65 | 152.5 | 139.72 | 51.52 | — | 5.18 | 5.24 | –2.47 |
| 7 | 38 | 177.8 | 56.1 | 13.72 | 150.36 | 136.52 | 55.52 | — | — | — | — |
| 7 | 42.7 | 177.8 | 63.84 | 15.88 | 146.04 | 133.38 | 63.41 | — | — | — | — |
| 7 | 46.4 | 177.8 | 69.35 | 17.45 | 142.9 | 130.18 | 69.01 | — | — | — | — |
| 7 | 50.1 | 177.8 | 74.85 | 19.05 | 139.7 | 74.58 | — | — | — | — | |
| 7 | 53.6 | 177.8 | 80.21 | 20.62 | 136.56 | 79.93 | — | — | — | — | |
| 7 | 57.1 | 177.8 | 85.42 | 22.22 | 133.36 | 85.25 | — | ||||
| 7 5/8 | 24 | 193.68 | 35.72 | 7.62 | 178.44 | 175.26 | 34.96 | 7.11 | — 8.58 | — 9.12 | — 2.59 |
| 7 5/8 | 26.4 | 193.68 | 39.29 | 8.33 | 177.02 | 173.84 | 38.08 | 6.78 | 7.91 | 8.38 | 1.84 |
| 7 5/8 | 29.7 | 193.68 | 44.2 | 9.52 | 174.64 | 171.46 | 43.24 | — | 7.13 | 7.51 | 0.98 |
| 7 5/8 | 33.7 | 193.68 | 50.15 | 10.92 | 171.84 | 168.66 | 49.22 | — | 6.16 | 6.44 | – 0.10 |
| 7 5/8 | 39 | 193.68 | 58.04 | 12.7 | 168.28 | 165.1 | 56.68 | — | 5.32 | 5.5 | –1.03 |
| 7 5/8 | 42.8 | 193.68 | 63.69 | 14.27 | 165.14 | 161.96 | 63.14 | — | 4.87 | 5.01 | –1.52 |
| 7 5/8 | 45.3 | 193.68 | 67.41 | 15.11 | 163.46 | 160.28 | 66.54 | — | 4.48 | 4.57 | –1.96 |
| 7 5/8 | 47.1 | 193.68 | 70.09 | 15.88 | 161.92 | 158.74 | 69.63 | — | — | — | — |
| 7 5/8 | 51.2 | 193.68 | 76.19 | 17.45 | 158.78 | 155.6 | 75.84 | — | — | — | — |
| 7 5/8 | 55.3 | 193.68 | 82.3 | 19.05 | 155.58 | 152.4 | 82.04 | — | |||
| 7 3/4 | 46.1 | 196.85 | 68.6 | 15.11 | 166.63 | 165.10 e | 67.72 | — | — | — | — |
| 7 3/4 | 46.1 | 196.85 | 68.6 | 15.11 | 166.63 | 163.45 | 67.72 | — | — | — | — |
| 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 | – | – | – | – | – | – | |
In addition, the N80 grade of steel is relatively lightWeight, making it easier to transport and install. This can help to reduce the cost of the drilling operation, as well as the time required to complete the job.
oil tube Chinese best Manufacturer,oil tube Chinese high-quality Wholesaler,casing pipe china Best Company,Finally, the N80 grade of steel is also highly resistant to cracking and other forms of damage. This helps to ensure that the casing will remain intact and provide a reliable seal for the duration of the well’s life.
Overall, using API 5CT N80 Casing for 7 inch wells offers a number of benefits. It is strong and durable, corrosion-resistant, lightweight, and highly resistant to cracking and other forms of damage. These features make it an ideal choice for use in oil and gas drilling operations.
