Surface casing
Sanjack Petro manufactures Surface casing in China. We have our own factory of Surface casing. Sanjack Petro provides the high quality and competitive price on Surface casing for you. Contact us now for Surface casing quotation.
- Sanjack has 8 high-precision and fully automated casing pipe and coupling thread production lines.
- Tubing threading strictly follows international standards. The screw thread parameters are controlled internally, and the thread precision is higher than intl standards.
- Magnetic Flux Leakage Testing, Ultrasonic Flaw Testing, Magnetic Particle Testing, and Tubing Integrity Testing.
Surface casing
Surface casing is set to provide blowout protection, isolate water sands, and prevent lost circulation. It also often provides adequate shoe strength to drill into high-pressure transition zones. In deviated wells, the surface casing may cover the build section to prevent the keyseating of the formation during deeper drilling. This string is typically cemented to the surface or to the mudline in offshore wells.
Surface casing
The function of this type of casing is sealing off the freshwater zones and providing support for the blowout preventer (BOP).
The setting depth of this casing has to be accurately designed in areas where high pressure is expected.
If the surface casing is set higher than planned or the setting depth is underestimated, the formation at the casing shoe cannot resist the pressure exerted while circulating gas influx which can occur during drilling the next section.
Casing and Tubing Data Sheet
Casing Pipe Dimensions and Weight Chart for round thread and buttress thread
|
Labels |
Outside diameter | Nominal
linear mass T&C |
Wall thickness | Inside diameter | Drift diameter | Calculated mass C | |||||
| Plain end | Mass gain or loss due to end finishing (lb) | ||||||||||
| Round thread | Buttress thread | ||||||||||
| 1 | 2.00 | D （in） | lb/ft | t （in） | d （in） | in | lb/ft | Short | Long | RC | SCC |
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 4 1/2 | 9.50 | 4.500 | 9.50 | 0.205 | 4.090 | 3.965 | 9.41 | 4.20 | |||
| 4 1/2 | 10.50 | 4.500 | 10.50 | 0.224 | 4.052 | 3.927 | 10.24 | 3.80 | 5.00 | 2.56 | |
| 4 1/2 | 11.60 | 4.500 | 11.60 | 0.250 | 4.000 | 3.875 | 11.36 | 3.40 | 3.80 | 4.60 | 2.16 |
| 4 1/2 | 13.50 | 4.500 | 13.50 | 0.290 | 3.920 | 3.795 | 13.05 | 3.20 | 4.00 | 1.56 | |
| 4 1/2 | 15.10 | 4.500 | 15.10 | 0.337 | 3.826 | 3.701 | 15.00 | 2.80 | 3.20 | 0.76 | |
| 5 | 11.50 | 5.000 | 11.50 | 0.220 | 4.560 | 4.435 | 11.24 | 5.40 | |||
| 5 | 13.00 | 5.000 | 13.00 | 0.253 | 4.494 | 4.369 | 12.84 | 4.80 | 5.80 | 6.60 | 2.42 |
| 5 | 15.00 | 5.000 | 15.00 | 0.296 | 4.408 | 4.283 | 14.88 | 4.20 | 5.20 | 5.80 | 1.62 |
| 5 | 18.00 | 5.000 | 18.00 | 0.362 | 4.276 | 4.151 | 17.95 | 4.20 | 4.40 | 0.22 | |
| 5 | 21.40 | 5.000 | 21.40 | 0.437 | 4.126 | 4.001 | 21.32 | 2.95 | 2.46 | -1.72 | |
| 5 | 23.20 | 5.000 | 23.20 | 0.478 | 4.044 | 3.919 | 23.11 | 2.30 | 2.05 | -2.09 | |
| 5 | 24.10 | 5.000 | 24.10 | 0.500 | 4.000 | 3.875 | 24.05 | 1.95 | 1.24 | -2.94 | |
| 5 1/2 | 14.00 | 5.500 | 14.00 | 0.244 | 5.015 | 4.887 | 13.71 | 5.40 | |||
| 5 1/2 | 15.50 | 5.500 | 15.50 | 0.275 | 4.950 | 4.825 | 15.36 | 4.80 | 5.80 | 6.40 | 2.10 |
| 5 1/2 | 17.00 | 5.500 | 17.00 | 0.304 | 4.892 | 4.767 | 16.89 | 4.40 | 5.40 | 5.80 | 1.50 |
| 5 1/2 | 20.00 | 5.500 | 20.00 | 0.361 | 4.778 | 4.653 | 19.83 | 4.40 | 4.60 | 0.30 | |
| 5 1/2 | 23.00 | 5.500 | 23.00 | 0.415 | 4.670 | 4.545 | 22.56 | 3.20 | 3.40 | 0.90 | |
| 5 1/2 | 26.80 | 5.500 | 26.80 | 0.500 | 4.500 | 4.375 | 26.72 | ||||
| 5 1/2 | 29.70 | 5.500 | 29.70 | 0.562 | 4.376 | 4.251 | 29.67 | ||||
| 5 1/2 | 32.60 | 5.500 | 32.60 | 0.625 | 4.250 | 4.125 | 32.57 | ||||
| 5 1/2 | 35.30 | 5.500 | 35.30 | 0.687 | 4.126 | 4.001 | 35.35 | ||||
| 5 1/2 | 38.00 | 5.500 | 38.00 | 0.750 | 4.000 | 3.875 | 38.08 | ||||
| 5 1/2 | 40.50 | 5.500 | 40.50 | 0.812 | 3.876 | 3.751 | 40.69 | ||||
| 5 1/2 | 43.10 | 5.500 | 43.10 | 0.875 | 3.750 | 3.625 | 43.26 | ||||
| 7 | 17.00 | 7.000 | 17.00 | 0.231 | 6.538 | 6.413 | 16.72 | 10.00 | |||
| 7 | 20.00 | 7.000 | 20.00 | 0.272 | 6.456 | 6.331 | 19.56 | 9.40 | |||
| 7 | 23.00 | 7.000 | 23.00 | 0.317 | 6.366 | 6.250 | 22.65 | 8.00 | 10.40 | 11.00 | 1.60 |
| 7 | 23.00 | 7.000 | 23.00 | 0.317 | 6.366 | 6.241 | 22.65 | 8.00 | 10.40 | 11.00 | 1.60 |
| 7 | 26.00 | 7.000 | 26.00 | 0.362 | 6.276 | 6.151 | 25.69 | 7.20 | 9.40 | 9.60 | 0.20 |
| 7 | 29.00 | 7.000 | 29.00 | 0.408 | 6.184 | 6.059 | 28.75 | 8.00 | 8.20 | 1.20 | |
| 7 | 32.00 | 7.000 | 32.00 | 0.453 | 6.094 | 6.000 | 31.70 | 6.60 | 6.80 | 2.60 | |
| 7 | 32.00 | 7.000 | 32.00 | 0.453 | 6.094 | 5.969 | 31.70 | 6.60 | 6.80 | 2.60 | |
| 7 | 35.00 | 7.000 | 35.00 | 0.498 | 6.004 | 5.879 | 34.61 | 5.60 | 5.60 | 3.80 | |
| 7 | 38.00 | 7.000 | 38.00 | 0.540 | 5.920 | 5.795 | 37.29 | 4.40 | 4.20 | 5.20 | |
| 7 | 42.70 | 7.000 | 42.70 | 0.625 | 5.750 | 5.625 | 42.59 | ||||
| 7 | 46.40 | 7.000 | 46.40 | 0.687 | 5.625 | 5.500 | 46.36 | ||||
| 7 | 50.10 | 7.000 | 50.10 | 0.750 | 5.500 | 5.375 | 50.11 | ||||
| 7 | 53.60 | 7.000 | 53.60 | 0.812 | 5.376 | 5.251 | 53.71 | ||||
| 7 | 57.10 | 7.000 | 57.10 | 0.875 | 5.250 | 5.125 | 57.29 | ||||
| 9 5/8 | 32.30 | 9.625 | 32.30 | 0.312 | 9.001 | 8.845 | 31.06 | 24.40 | |||
| 9 5/8 | 36.00 | 9.625 | 36.00 | 0.352 | 8.921 | 8.876 | 34.89 | 23.00 | 32.00 | 31.00 | 6.48 |
| 9 5/8 | 40.00 | 9.625 | 40.00 | 0.395 | 8.835 | 8.750 | 38.97 | 21.40 | 30.00 | 29.00 | 4.48 |
| 9 5/8 | 40.00 | 9.625 | 40.00 | 0.395 | 8.835 | 8.679 | 38.97 | 21.40 | 30.00 | 29.00 | 4.48 |
| 9 5/8 | 43.50 | 9.625 | 43.50 | 0.435 | 8.755 | 8.599 | 42.73 | 28.20 | 27.20 | 2.68 | |
| 9 5/8 | 47.00 | 9.625 | 47.00 | 0.472 | 8.681 | 8.525 | 46.18 | 26.60 | 25.60 | 1.08 | |
| 9 5/8 | 53.50 | 9.625 | 53.50 | 0.545 | 8.535 | 8.500 | 52.90 | 23.40 | 22.40 | -2.12 | |
| 9 5/8 | 53.50 | 9.625 | 53.50 | 0.545 | 8.535 | 8.379 | 52.90 | 23.40 | 22.40 | -2.12 | |
| 9 5/8 | 58.40 | 9.625 | 58.40 | 0.595 | 8.435 | 8.375 | 57.44 | 21.50 | 20.13 | -4.40 | |
| 9 5/8 | 58.40 | 9.625 | 58.40 | 0.595 | 8.435 | 8.279 | 57.44 | 21.50 | 20.13 | -4.40 | |
| 9 5/8 | 59.40 | 9.625 | 59.40 | 0.609 | 8.407 | 8.251 | 58.70 | ||||
| 9 5/8 | 64.90 | 9.625 | 64.90 | 0.672 | 8.281 | 8.125 | 64.32 | ||||
| 9 5/8 | 70.30 | 9.625 | 70.30 | 0.734 | 8.157 | 8.001 | 69.76 | ||||
| 9 5/8 | 75.60 | 9.625 | 75.60 | 0.797 | 8.031 | 7.875 | 75.21 | ||||
| 13 3/8 | 48.00 | 13.375 | 48.00 | 0.330 | 12.715 | 12.559 | 46.02 | 33.20 | |||
| 13 3/8 | 54.50 | 13.375 | 54.50 | 0.380 | 12.615 | 12.459 | 52.79 | 30.80 | 40.20 | ||
| 13 3/8 | 61.00 | 13.375 | 61.00 | 0.430 | 12.515 | 12.359 | 59.50 | 28.40 | 36.80 | ||
| 13 3/8 | 68.00 | 13.375 | 68.00 | 0.480 | 12.415 | 12.259 | 66.17 | 25.80 | 33.60 | ||
| 13 3/8 | 72.00 | 13.375 | 72.00 | 0.514 | 12.347 | 12.250 | 70.67 | 24.20 | 31.60 | ||
| 13 3/8 | 72.00 | 13.375 | 72.00 | 0.514 | 12.347 | 12.191 | 70.67 | 24.20 | 31.60 | ||
| 18 5/8 | 87.50 | 18.625 | 87.50 | 0.435 | 17.755 | 17.567 | 84.59 | 73.60 | 86.40 | ||
| 20 | 94.00 | 20.000 | 94.00 | 0.438 | 19.124 | 18.936 | 91.59 | 47.00 | 61.20 | 54.80 | |
| 20 | 106.50 | 20.000 | 106.50 | 0.500 | 19.000 | 18.812 | 104.23 | 41.60 | 54.80 | 48.40 | |
| 20 | 133.00 | 20.000 | 133.00 | 0.635 | 18.730 | 18.542 | 131.45 | 30.00 | 40.60 | 35.20 | |
Chemical Composition
| Chemical Composition, mass fraction (%) | |||||||||||||||
| Group | Grade | Type | C | Mn | Mo | Cr | Ni | Cu | P | S | Si | ||||
| min. | max. | min. | max. | min. | max. | min. | max. | max. | max. | max. | max. | max | |||
|
1 |
H40 | — | — | — | — | — | — | — | — | — | — | — | 0.03 | 0.03 | — |
| J55 | — | — | — | — | — | — | — | — | — | — | — | 0.03 | 0.03 | — | |
| K55 | — | — | — | — | — | — | — | — | — | — | — | 0.03 | 0.03 | — | |
| N80 | 1 | — | — | — | — | — | — | — | — | — | — | 0.03 | 0.03 | — | |
| N80 | Q | — | — | — | — | — | — | — | — | — | — | 0.03 | 0.03 | — | |
| R95 | — | — | 0.45 | — | 1.90 | — | — | — | — | — | — | 0.03 | 0.03 | 0.45 | |
|
2 |
M65 | — | — | — | — | — | — | — | — | — | — | — | 0.03 | 0.03 | — |
| L80 | 1 | — | 0.43 | — | 1.90 | — | — | — | — | 0.25 | 0.35 | 0.03 | 0.03 | 0.45 | |
| L80 | 9Cr | — | 0.15 | 0.30 | 0.60 | 0.90 | 1.10 | 8.00 | 10.00 | 0.50 | 0.25 | 0.02 | 0.01 | 1 | |
| L80 | 13Cr | 0.15 | 0.22 | 0.25 | 1.00 | — | — | 12.00 | 14.00 | 0.50 | 0.25 | 0.02 | 0.01 | 1 | |
| C90 | 1 | — | 0.35 | — | 1.20 | 0.25 | 0.85 | — | 1.50 | 0.99 | — | 0.02 | 0.01 | — | |
| T95 | 1 | — | 0.35 | — | 1.20 | 0.25 | 0.85 | 0.40 | 1.50 | 0.99 | — | 0.02 | 0.01 | — | |
| C110 | — | — | 0.35 | 1.20 | 0.25 | 1.00 | 0.40 | 1.50 | 0.99 | 0.02 | 0.005 | — | |||
| 3 | P110 | — | — | — | — | — | — | — | — | — | — | 0.03 | 0.03 | — | |
| 4 | Q125 | 1 | — | 0.35 | — | 1.35 | — | 0.85 | — | 1.50 | 0.99 | — | 0.02 | 0.01 | — |
- The carbon content for L80 may be increased up to 0,50 % maximum if the product isoil-quenched.
- The molybdenum content for Grade C90 Type 1 has no minimum tolerance if the WT is less than 17,78
- The carbon content for R95 may be increased up to 0,55 % maximum if the product isoil-quenched.
- Themolybdenum content for T95 Type 1 may be decreased to 0,15 % minimum if the WT is less than 17,78
- For EW Grade P110, the phosphorus content shall be 0,020 % maximum, and the sulfur content 0,010 % maximum. NL = no limit. Elements shown shall be reported in product
Mechanical Properties
| Mechanical Properties | ||||||||||
|
Group |
Grade |
Type |
Total elongation
under load |
Yield strength MPa | Tensile strength min. | Hardeness max. | ||||
| % | min. | max. | MPa | HRC | HBW | |||||
|
1 |
H40 | — | 0.5 | 276 | 552 | 414 | — | — | ||
| J55 | — | 0.5 | 379 | 552 | 517 | — | — | |||
| K55 | — | 0.5 | 379 | 552 | 655 | — | — | |||
| N80 | 1 | 0.5 | 552 | 758 | 689 | — | — | |||
| N80 | Q | 0.5 | 552 | 758 | 689 | — | — | |||
| R95 | — | 0.5 | 655 | 758 | 724 | — | — | |||
|
2 |
M65 | — | 0.5 | 448 | 586 | 586 | 22 | 235 | ||
| L80 | 1 | 0.5 | 552 | 655 | 655 | 23 | 241 | |||
| L80 | 9Cr | 0.5 | 552 | 655 | 655 | 23 | 241 | |||
| L80 | 13Cr | 0.5 | 552 | 655 | 655 | 23 | 241 | |||
| C90 | 1 | 0.5 | 621 | 724 | 689 | 25.4 | 255 | |||
| T95 | 1 | 0.5 | 655 | 758 | 724 | 25.4 | 255 | |||
| C110 | — | 0.7 | 758 | 828 | 793 | 30 | 286 | |||
| 3 | P110 | — | 0.6 | 758 | 965 | 862 | — | — | ||
| 4 | Q125 | 1 | 0.65 | 862 | 1034 | 931 | — | |||
- In case of dispute, laboratory Rockwell C hardness testing shall be used as the referee
- No hardness limits, but the maximum variation is controlled by the manufacturer acc
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OCTG Tubing & Casing- Specifications and Grade of steel
- PSL1 or PSL2
- Corrosion and wear conditions
Steel Tubing Pipe Guide- Specifications and Grade of steel.
- Connection type
- Working temperature
Polycore Tubing tubing Guide- Corrosive composition.
- Abrasion condition
- Working temperature.
Anti-Corrosion OCTG Tubing Guide- Corrosive composition
- Amount
- Well conditions details.