API spec 5ct L80 Casing TubeWg
L80 belongs to steel class corrosion resistant casing group. L80 API oil field casing includes L80-1U L80-9Cr and L80-13Cr.L80-1 for H2S environment, and L80-9Cr and L80-13Cr for CO2 environment, in corrosive environment dominated by carbon dioxide, Super 13Cr has higher corrosion resistance than L80-13Cr.
operative norm : API 5CT, GB, ISO11960, GOST
Buckle type: STC, LTC, BTC, XC and Premium connection
length: R1, R2, R3
method of calibration
1. Dimension and surface inspection
2.NDT and stress testing and third party certification
3. Hydrostatic pressure
4. Drift test
5. Physical and chemical analysis
6. Hardness and pressure test
7. Electromagnetic
8. Magnetic powder
9. Ultrasound
Size and weight
Size | Weight | Outside Diameter | Wall Thickness | End Finish | ||||||
Grade | ||||||||||
in | mm | in | mm | J55K55 | L80 | N80 | C90T95 | P110 | ||
4 1/2 | 9.50 | 4.500 | 114.3 | 0.205 | 5.21 | PS | – | – | – | – |
10.50 | 0.224 | 5.69 | PSB | – | – | – | – | |||
11.60 | 0.250 | 6.35 | PSLB | PLB | PLB | PLB | PLB | |||
13.50 | 0.290 | 7.37 | – | PLB | PLB | PLB | PLB | |||
15.10 | 0.337 | 9.56 | – | – | – | – | PLB | |||
5 | 11.50 | 5.00 | 127.00 | 0.220 | 5.59 | PS | – | – | – | – |
13.00 | 0.253 | 6.43 | PSLB | – | – | – | – | |||
15.00 | 0.296 | 7.52 | PSLB | PLB | PLB | PLBE | PLB | |||
18.00 | 0.362 | 9.19 | – | PLB | PLB | PLBE | PLB | |||
21.40 | 0.437 | 11.10 | – | PLB | PLB | PLB | PLB | |||
23.20 | 0.478 | 12.14 | – | PLB | ||||||
24.10 | 0.500 | 12.70 | – | PLB | ||||||
5 1/2 | 14.00 | 5.500 | 139.7 | 0.244 | 6.20 | PS | – | – | – | – |
15.50 | 0.275 | 6.98 | PSLB | – | – | – | – | |||
17.00 | 0.304 | 7.72 | PSLB | PLB | PLB | PLBE | PLB | |||
20.00 | 0.361 | 9.17 | – | PLB | PLB | PLBE | PLB | |||
23.00 | 0.415 | 10.54 | – | PLB | PLB | PLBE | PLB | |||
6 5/8 | 20.00 | 6.625 | 168.28 | 0.288 | 7.32 | PSLB | – | – | – | – |
24.00 | 0.352 | 8.94 | PSLB | PLB | PLB | PLBE | PLB | |||
28.00 | 0.417 | 10.59 | – | PLB | PLB | PLBE | PLB | |||
32.00 | 0.475 | 12.06 | – | PLB | PLB | PLBE | PLB | |||
7 | 17.00 | 7.00 | 177.80 | 0.231 | 5.87 | – | – | – | – | – |
20.00 | 0.272 | 6.91 | PS | – | – | – | – | |||
23.00 | 0.317 | 8.05 | PSLB | PLB | PLB | PLBE | – | |||
26.00 | 0.362 | 9.19 | PSLB | PLB | PLB | PLBE | PLB | |||
29.00 | 0.408 | 10.36 | – | PLB | PLB | PLBE | PLB | |||
32.00 | 0.453 | 11.51 | – | PLB | PLB | PLBE | PLB | |||
35.00 | 0.498 | 12.65 | – | PLB | PLB | PLBE | PLB | |||
38.00 | 0.540 | 13.72 | – | PLB | PLB | PLBE | PLB | |||
7 5/8 | 24.00 | 7.625 | 193.68 | 0.300 | 7.62 | – | – | – | – | – |
26.40 | 0.328 | 8.33 | PSLB | PLB | PLB | PLBE | PLB | |||
29.70 | 0.375 | 9.52 | – | PLB | PLB | PLBE | PLB | |||
33.70 | 0.430 | 10.92 | – | PLB | PLB | PLBE | PLB | |||
39.00 | 0.500 | 12.70 | – | PLB | PLB | PLBE | PLB | |||
42.80 | 0.562 | 14.27 | – | PLB | PLB | PLB | PLB | |||
45.30 | 0.595 | 15.11 | – | PLB | PLB | PLB | PLB | |||
47.10 | 0.625 | 15.88 | – | PLB | PLB | PLB | PLB | |||
8 5/8 | 24.00 | 8.625 | 219.08 | 0.264 | 6.71 | PS | – | – | – | – |
28.00 | 0.304 | 7.72 | – | – | – | – | – | |||
32.00 | 0.352 | 8.94 | PSLB | – | – | – | – | |||
36.00 | 0.400 | 10.16 | PSLB | PLB | PLB | PLBE | PLB | |||
40.00 | 0.450 | 11.43 | – | PLB | PLB | PLBE | PLB | |||
44.00 | 0.500 | 12.70 | – | PLB | PLB | PLBE | PLB | |||
49.00 | 0.557 | 14.15 | – | PLB | PLB | PLBE | PLB | |||
9 5/8 | 32.30 | 9.625 | 244.48 | 0.312 | 7.92 | – | – | – | – | – |
36.00 | 0.352 | 8.94 | PSLB | – | – | – | – | |||
40.00 | 0.395 | 10.03 | PSLB | PLB | PLB | PLBE | – | |||
43.50 | 0.435 | 11.05 | – | PLB | PLB | PLBE | PLB | |||
47.00 | 0.472 | 11.99 | – | PLB | PLB | PLBE | PLB | |||
53.50 | 0.545 | 13.84 | – | PLB | PLB | PLBE | PLB | |||
58.40 | 0.595 | 15.11 | – | PLB | PLB | PLB | PLB | |||
10 3/4 | 32.75 | 10.75 | 273.05 | 0.279 | 7.09 | – | – | – | – | – |
40.50 | 0.350 | 8.89 | PSB | – | – | – | – | |||
15.50 | 0.400 | 10.16 | PSB | – | – | – | – | |||
51.00 | 0.450 | 11.43 | PSB | PSB | PSB | PSBE | PSB | |||
55.50 | 0.495 | 12.57 | – | PSB | PSB | PSBE | PSB | |||
60.70 | 0.545 | 13.84 | – | – | – | PSBE | PSB | |||
65.70 | 0.595 | 15.11 | – | – | – | PSB | PSB | |||
13 3/8 | 48.00 | 13.375 | 339.73 | 0.330 | 8.38 | – | – | – | – | – |
54.50 | 0.380 | 9.65 | PSB | – | – | – | – | |||
61.00 | 0.430 | 10.92 | PSB | – | – | – | – | |||
68.00 | 0.480 | 12.19 | PSB | PSB | PSB | PSB | PSB | |||
72.00 | 0.514 | 13.06 | – | PSB | PSB | PSB | PSB | |||
16 | 65.00 | 16 | 406.40 | 0.375 | 9.53 | – | – | – | – | – |
75.00 | 0.438 | 11.13 | PSB | – | – | – | – | |||
84.00 | 0.495 | 12.57 | PSB | – | – | – | – | |||
109.00 | 0.656 | 16.66 | P | P | P | – | P | |||
18 5/8 | 87.50 | 18.625 | 473.08 | 0.435 | 11.05 | PSB | – | – | – | – |
20 | 94.00 | 20 | 508.00 | 0.438 | 11.13 | PSLB | – | – | – | – |
106.50 | 0.500 | 12.70 | PSLB | – | – | – | – | |||
133.00 | 0.635 | 16.13 | PSLB | – | – | – | – | |||
Because of the relatively high price, the product is suitable for more complex geological conditions and goes deep into the well. In oil and gas extraction, the L80 is less frequently used than the J 55 N 80 and other materials. 
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