OCTG
OCTG - Oil Country Tubular Goods
- Standard: API SPEC 5CT L80
-
Uses: Tubing is used to extracting petroleum and natural gas from a well
Casing serves as walls of a well - OCTG Range: We supply a full range of high quality casing and tubing, drill pipe, premium connections, pipe accessories, sucker rods and coiled tubing for use in all types of oil and gas drilling and well completion activities. We accompany our products with services, based on our expertise of material selection and successful projects.
OCTG Standard and Grade:
Size of Tubing:
| Size | Type of end-finish | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Linear Mass lb/ft | Outside diameter | Wall thickness | Grade | |||||||||
| Nonupset | Ex-Upset | ln. | mm | ln. | mm | J-55 | L-80 | N-801、Q | C-90 | T-95 | P-110 | |
| T﹠C | T﹠C | |||||||||||
| 2 3/8” | 4 | -- | 2.375 | 60.33 | 0.167 | 4.24 | PN | PN | PN | PN | PN | -- |
| 4.6 | 4.7 | 2.375 | 60.33 | 0.19 | 4.83 | PNU | PNU | PNU | PNU | PNU | PNU | |
| 5.8 | 5.95 | 2.375 | 60.33 | 0.254 | 6.45 | -- | PNU | PNU | PNU | PNU | PNU | |
| 6.6 | -- | 2.375 | 60.33 | 0.295 | 7.49 | -- | P | -- | P | P | -- | |
| 7.35 | 7.45 | 2.375 | 60.33 | 0.336 | 8.53 | -- | PU | -- | PU | PU | -- | |
| 2 7/8” | 6.4 | 6.5 | 2.875 | 73.03 | 0.217 | 5.51 | PUN | PNU | PNU | PNU | PNU | PNU |
| 7.8 | 7.9 | 2.875 | 73.03 | 0.276 | 7.01 | -- | PNU | PNU | PNU | PNU | PNU | |
| 8.6 | 8.7 | 2.875 | 73.03 | 0.308 | 7.82 | -- | PNU | PNU | PNU | PNU | PNU | |
| 9.35 | 9.45 | 2.875 | 73.03 | 0.34 | 8.64 | -- | PU | -- | PU | PU | -- | |
| 10.5 | -- | 2.875 | 73.03 | 0.392 | 9.96 | -- | P | -- | P | P | -- | |
| 11.5 | -- | 2.875 | 73.03 | 0.44 | 11.18 | -- | P | -- | P | P | -- | |
| 3 1/2” | 7.7 | -- | 3.5 | 88.9 | 0.216 | 5.49 | PN | PN | PN | PN | PN | -- |
| 9.2 | 9.3 | 3.5 | 88.9 | 0.254 | 6.45 | PNU | PNU | PNU | PNU | PNU | PNU | |
| 10.2 | -- | 3.5 | 88.9 | 0.289 | 7.34 | PN | PN | PN | PN | PN | -- | |
| 12.7 | 12.95 | 3.5 | 88.9 | 0.375 | 9.52 | -- | PNU | PNU | PNU | PNU | PNU | |
| 14.3 | -- | 3.5 | 88.9 | 0.43 | 10.92 | -- | P | -- | P | P | -- | |
| 15.5 | -- | 3.5 | 88.9 | 0.476 | 12.09 | -- | P | -- | P | P | -- | |
| 17 | -- | 3.5 | 88.9 | 0.53 | 13.46 | -- | P | -- | P | P | -- | |
| 4” | 9.5 | -- | 4 | 101.6 | 0.226 | 5.74 | PN | PN | PN | PN | PN | PU |
| -- | 11 | 4 | 101.6 | 0.262 | 6.65 | PU | PU | PU | PU | PU | PU | |
| 13.2 | -- | 4 | 101.6 | 0.33. | 8.38 | -- | P | -- | P | P | -- | |
| 16.1 | -- | 4 | 101.6 | 0.415 | 10.54 | -- | P | -- | P | P | -- | |
| 18.9 | -- | 4 | 101.6 | 0.5 | 12.7 | -- | P | -- | P | P | -- | |
| 22.2 | -- | 4 | 101.6 | 0.61 | 15.49 | -- | P | -- | P | P | -- | |
| 4 1/2” | 12.6 | 12.75 | 4.5 | 114.3 | 0.271 | 6.88 | PNU | PNU | PNU | PNU | PNU | -- |
| 15.2 | -- | 4.5 | 114.3 | 0.337 | 8.56 | -- | P | -- | P | P | -- | |
| 17 | -- | 4.5 | 114.3 | 0.38 | 9.65 | -- | P | -- | P | P | -- | |
| 18.9 | -- | 4.5 | 114.3 | 0.43 | 10.92 | -- | P | -- | P | P | -- | |
| 21.5 | -- | 4.5 | 114.3 | 0.5 | 12.7 | -- | P | -- | P | P | -- | |
| 23.7 | -- | 4.5 | 114.3 | 0.56 | 14.22 | -- | P | -- | P | P | -- | |
| 26.1 | -- | 4.5 | 114.3 | 0.63 | 16 | -- | P | -- | P | P | -- | |
| Non-Upset T﹠C | ||||||||||||
| Ex-Upset T﹠C | ||||||||||||
| P—Plain end | ||||||||||||
| N—Non-upset threaded and coupled | ||||||||||||
| U—External upset threaded and coupled | ||||||||||||
Size of Casing:
| Size | Linear Mass | Type of end-finish | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Outside diameter | Wall thichness | Grade | ||||||||
| lb/ft | ln. | mm | ln. | mm | J-55 | L-80 | N-80 1、Q | C-90 | P-110 | |
| 4 1/2” | 9.5 | 4.5 | 114.3 | 0.205 | 5.21 | PS | -- | -- | -- | -- |
| 10.5 | 4.5 | 114.3 | 0.224 | 5.69 | PSB | -- | -- | -- | -- | |
| 11.6 | 4.5 | 114.3 | 0.25 | 6.35 | PSLB | PLB | PLB | PLB | PLB | |
| 13.5 | 4.5 | 114.3 | 0.29 | 7.37 | -- | PLB | PLB | PLB | PLB | |
| 15.1 | 4.5 | 114.3 | 0.337 | 8.56 | -- | -- | -- | -- | PLB | |
| 5” | 11.5 | 5 | 127 | 0.22 | 5.59 | PS | -- | -- | -- | -- |
| 13 | 5 | 127 | 0.253 | 6.43 | PSLB | -- | -- | -- | -- | |
| 15 | 5 | 127 | 0.296 | 7.52 | PSLB | PLB | PLB | PLB | PLB | |
| 18 | 5 | 127 | 0.362 | 9.19 | -- | PLB | PLB | PLB | PLB | |
| 21.4 | 5 | 127 | 0.437 | 11.1 | -- | PLB | PLB | PLB | PLB | |
| 23.2 | 5 | 127 | 0.478 | 12.14 | -- | PLB | PLB | PLB | PLB | |
| 24.1 | 5 | 127 | 0.5 | 12.7 | -- | PLB | PLB | PLB | PLB | |
| 5 1/2” | 14 | 5.5 | 139.7 | 0.244 | 6.2 | PS | -- | -- | -- | -- |
| 15.5 | 5.5 | 139.7 | 0.275 | 6.98 | PSLB | -- | -- | -- | -- | |
| 17 | 5.5 | 139.7 | 0.304 | 7.72 | PSLB | PLB | PLB | PLB | PLB | |
| 20 | 5.5 | 139.7 | 0.361 | 9.17 | -- | PLB | PLB | PLB | PLB | |
| 23 | 5.5 | 139.7 | 0.415 | 10.54 | -- | PLB | PLB | PLB | PLB | |
| 26.8 | 5.5 | 139.7 | 0.5 | 12.7 | -- | -- | -- | P | -- | |
| 29.7 | 5.5 | 139.7 | 0.562 | 14.27 | -- | -- | -- | P | -- | |
| 32.6 | 5.5 | 139.7 | 0.625 | 15.87 | -- | -- | -- | P | -- | |
| 35.3 | 5.5 | 139.7 | 0.687 | 17.45 | -- | -- | -- | P | -- | |
| 38 | 5.5 | 139.7 | 0.75 | 19.05 | -- | -- | -- | P | -- | |
| 40.5 | 5.5 | 139.7 | 0.812 | 20.62 | -- | -- | -- | P | -- | |
| 43.1 | 5.5 | 139.7 | 0.875 | 22.23 | -- | -- | -- | P | -- | |
| 6 5/8” | 20 | 6.625 | 168.28 | 0.288 | 7.32 | PSLB | -- | -- | -- | -- |
| 24 | 6.625 | 168.28 | 0.352 | 8.94 | PSLB | PLB | PLB | PLB | PLB | |
| 28 | 6.625 | 168.28 | 0.417 | 10.59 | -- | PLB | PLB | PLB | PLB | |
| 32 | 6.625 | 168.28 | 0.475 | 12.06 | -- | PLB | PLB | PLB | PLB | |
| 7” | 17 | 7 | 177.8 | 0.231 | 5.87 | -- | -- | -- | -- | -- |
| 20 | 7 | 177.8 | 0.272 | 6.91 | PS | -- | -- | -- | -- | |
| 23 | 7 | 177.8 | 0.317 | 8.05 | PSLB | PLB | PLB | PLB | -- | |
| 26 | 7 | 177.8 | 0.362 | 9.19 | PSLB | PLB | PLB | PLB | PLB | |
| 29 | 7 | 177.8 | 0.408 | 10.36 | -- | PLB | PLB | PLB | PLB | |
| 32 | 7 | 177.8 | 0.453 | 11.51 | -- | PLB | PLB | PLB | PLB | |
| 35 | 7 | 177.8 | 0.498 | 12.65 | -- | PLB | PLB | PLB | PLB | |
| 38 | 7 | 177.8 | 0.54 | 13.72 | -- | PLB | PLB | PLB | PLB | |
| 42.7 | 7 | 177.8 | 0.625 | 15.87 | -- | -- | -- | P | -- | |
| 46.4 | 7 | 177.8 | 0.687 | 17.45 | -- | -- | -- | P | -- | |
| 50.1 | 7 | 177.8 | 0.75 | 19.05 | -- | -- | -- | P | -- | |
| 53.6 | 7 | 177.8 | 0.812 | 20.62 | -- | -- | -- | P | -- | |
| 57.1 | 7 | 177.8 | 0.875 | 22.23 | -- | -- | -- | P | -- | |
| 7 5/8’’ | 24 | 7.625 | 193.68 | 0.3 | 7.62 | - | - | - | - | - |
| 26.4 | 7.625 | 193.68 | 0.328 | 8.33 | PSLB | PLB | PLB | PLB | PLB | |
| 29.7 | 7.625 | 193.68 | 0.375 | 9.53 | - | PLB | PLB | PLB | PLB | |
| 33.7 | 7.625 | 193.68 | 0.43 | 10.92 | - | PLB | PLB | PLB | PLB | |
| 39 | 7.625 | 193.68 | 0.5 | 12.7 | - | PLB | PLB | PLB | PLB | |
| 42.8 | 7.625 | 193.68 | 0.562 | 14.27 | - | PLB | PLB | PLB | PLB | |
| 45.3 | 7.625 | 193.68 | 0.595 | 15.11 | - | PLB | PLB | PLB | PLB | |
| 47.1 | 7.625 | 193.68 | 0.625 | 15.88 | - | PLB | PLB | PLB | PLB | |
| 51.2 | 7.625 | 193.68 | 0.687 | 17.45 | - | - | - | P | - | |
| 55.3 | 7.75 | 193.68 | 0.75 | 19.05 | -- | - | P | - | ||
| 7 3/4” | 46.1 | 8.625 | 219.08 | 0.595 | 15.11 | - | P | P | P | P |
| 8 5/8” | 24 | 8.625 | 219.08 | 0.264 | 6.71 | PS | - | - | - | - |
| 28 | 8.625 | 219.08 | 0.304 | 7.72 | - | - | - | - | - | |
| 32 | 8.625 | 219.08 | 0.352 | 8.94 | PSLB | - | - | - | - | |
| 36 | 8.625 | 219.08 | 0.4 | 10.16 | PSLB | PLB | PLB | PLB | PSLB | |
| 8.625 | 219.08 | 0.45 | 11.43 | - | PLB | PLB | PLB | PLB | - | |
| 44 | 8.625 | 219.08 | 0.5 | 12.7 | - | PLB | PLB | PLB | PLB | |
| 49 | 9.625 | 244.28 | 0.557 | 14.15 | - | PLB | PLB | PLB | - | |
| 9 5/8” | 32.3 | 9.625 | 244.48 | 0.312 | 7.92 | - | - | - | - | - |
| 36 | 9.625 | 244.48 | 0.352 | 8.94 | PSLB | - | - | - | - | |
| 40 | 9.625 | 244.48 | 0.395 | 10.03 | PSLB | PLB | PLB | PLB | PLB | |
| 43.5 | 9.625 | 244.48 | 0.435 | 11.05 | - | PLB | PLB | PLB | PLB | |
| 47 | 9.625 | 244.48 | 0.472 | 11.99 | - | PLB | PLB | PLB | PLB | |
| 53.5 | 9.625 | 244.48 | 0.545 | 13.84 | - | PLB | PLB | PLB | PLB | |
| 58.4 | 9.625 | 244.48 | 0.595 | 15.11 | - | PLB | PLB | PLB | - | |
| 59.4 | 9.625 | 244.48 | 0.609 | 15.57 | - | - | - | P | - | |
| 64.9 | 9.625 | 244.48 | 0.672 | 17.07 | - | - | - | P | - | |
| 70.3 | 9.625 | 244.48 | 0.734 | 18.64 | - | - | - | P | - | |
| 75.6 | 9.625 | 244.48 | 0.797 | 20.24 | - | - | - | P | - | |
| 10 3/4” | 32.75 | 10.75 | 273.05 | 0.279 | 7.09 | - | - | - | - | - |
| 40.5 | 10.75 | 273.05 | 0.35 | 8.89 | PSB | - | - | - | - | |
| 45.5 | 1075 | 273.05 | 0.4 | 10.16 | PSB | - | - | - | - | |
| 51 | 10.75 | 273.05 | 0.45 | 11.43 | PSB | PSB | PSB | PSB | PSB | |
| 55.5 | 10.75 | 273.05 | 0.468 | 12.57 | - | PSB | PSB | PSB | PSB | |
| 60.7 | 10.75 | 273.05 | 0.545 | 13.84 | - | - | - | PSB | PSB | |
| 65.7 | 10.75 | 273.05 | 0.595 | 15.11 | - | - | - | PSB | PSB | |
| 73.2 | 10.75 | 273.05 | 0.672 | 17.07 | - | - | - | P | - | |
| 79.2 | 10.75 | 27305 | 0.734 | 18.64 | - | - | - | P | - | |
| 85.3 | 10.75 | 273.05 | 0.797 | 20.24 | - | - | - | P | - | |
| 11 3/4” | 42 | 11.75 | 298.45 | 0.333 | 8.46 | - | - | - | - | - |
| 47 | 11.75 | 298.45 | 0.375 | 9.53 | PSB | - | - | - | - | |
| 54 | 11.75 | 298.45 | 0.435 | 11.05 | PSB | - | - | - | - | |
| 65 | 11.75 | 298.45 | 0.534 | 13.56 | - | P | P | P | P | |
| 71 | 11.75 | 298.45 | 0.582 | 14.78 | - | P | P | P | P | |
| 13 3/8” | 48 | 13.375 | 339.73 | 0.33 | 8.38 | - | - | - | - | - |
| 54.5 | 13.375 | 339.73 | 0.38 | 9.65 | PSB | - | - | - | - | |
| 61 | 13.375 | 339.73 | 0.43 | 10.92 | PSB | - | - | - | - | |
| 68 | 13.375 | 339.73 | 0.48 | 12.19 | PSB | PSB | PSB | PSB | PSB | |
| 72 | 13.375 | 339.73 | 0.514 | 13.06 | - | PSB | PSB | PSB | PSB | |
| 16” | 65 | 16 | 406.4 | 0.375 | 9.53 | - | - | - | - | - |
| 75 | 16 | 406.4 | 0.438 | 11.13 | PSB | - | - | - | - | |
| 84 | 16 | 406.4 | 0.495 | 12.75 | PSB | - | - | - | - | |
| 109 | 16 | 406.4 | 0.656 | 16.66 | P | P | P | - | P | |
| 18 5/8” | 87.5 | 18.625 | 473.08 | 0.435 | 11.05 | PSB | - | - | - | - |
| 20” | 94 | 20 | 508 | 0.438 | 11.13 | PSLB | - | - | - | - |
| 106.5 | 20 | 508 | 0.5 | 12.7 | PSLB | - | - | - | - | |
| 133 | 20 | 508 | 0.635 | 16.13 | PSLB | - | - | - | - | |
| P – Plain end; | ||||||||||
| S – Short round thread | ||||||||||
| L – Long round thread | ||||||||||
| B – Buttress thread | ||||||||||
OCTG Grade and Methods
AGICO supplies a wide range of high quality casing and tubing as well as related services for deep fabrication. Casing and tubing is available in carbon and alloy grades produced by seamless and ERW methods according to API Spec 5CT.
We utilize the latest technologies throughout our steel and pipe production and finishing processes. All OCTG casing and tubing undergoes ultrasonic and electromagnetic NDT inspection per API Spec 5CT. Pipe ends and couplings are tested using luminescent magnetic fluid. Tensile, flattening and hydrostatic tests are carried out according to specifications and/or upon customer request. Outside pipe surfaces are covered with black lacquer. Threads are covered with compound and protectors.
Oil country tubular goods (OCTG) is a family of seamless rolled products consisting of drill pipe, casing and tubing subjected to loading conditions according to their specific application.
- Drill pipe is heavy seamless tube that rotates the drill bit and circulates drilling fluid. Pipe segments 30 ft (9m) long are coupled with tool joints. Drill pipe is simultaneously subjected to high torque by drilling, axial tension by its dead weight, and internal pressure by purging of drilling fluid. Additionally, alternating bending loads due to non-vertical or deflected drilling may be superimposed on these basic loading patterns.
- Casing pipe lines the borehole. It is subject to axial tension by its dead weight, internal pressure by fluid purging, and external pressure by surrounding rock formations. Casing is particularly exposed to axial tension and internal pressure by the pumped oil or gas emulsion.
-
Tubing is pipe through which the oil or gas is transported from the wellbore. Tubing segments are generally around 30 ft long with a threaded connection on each end.
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