OCTG(Oil Country Tubular Goods)

Bywebadmin

The Benefits of octg for oil and gas exploration Oil and gas exploration is a complex and expensive process that requires the use of specialized equipment. One of the most important pieces of equipment used in this process is OCTG, or oil country tubular goods. OCTG is a type of steel Pipe used in the…

The Benefits of octg for oil and gas exploration

Oil and gas exploration is a complex and expensive process that requires the use of specialized equipment. One of the most important pieces of equipment used in this process is OCTG, or oil country tubular goods. OCTG is a type of steel Pipe used in the drilling and production of oil and gas. It is designed to withstand the extreme pressures and temperatures encountered during the exploration process.

The use of OCTG offers a number of benefits to oil and gas exploration. First, it is highly durable and can withstand the extreme pressures and temperatures encountered during the exploration process. This ensures that the pipe will not fail during the exploration process, which can be costly and time-consuming.

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Second, OCTG is corrosion–resistant, which means it can be used in a variety of environments without fear of corrosion. This is especially important in offshore exploration, where corrosion can be a major issue.

Third, OCTG is relatively lightweight, which makes it easier to transport and install. This can help reduce the cost of exploration, as well as the time it takes to complete the process.

 API 5ct l80 Casing tubing range lengths
  Range 1 Range 2 Range 3
CASING (PE/T and C/SF)      
Total range length, inclusive Permissible variation, max a 4.88 to 7.62 1.83 7.62 to 10.36 10.36 to 14.63 1.83
    1.52  
TUBING AND CASING USED AS TUBING      
(PE/T and C/SF)      
Total range length, inclusive Permissible variation, max a 6.10 to 7.32 b 8.53 to 9.75 c 11.58 to 12.80 d
  0.61 0.61 0.61
INTEGRAL TUBING connectionS (including IJ/PE      
and IJ/SF)      
Total range length, inclusive Permissible variation, max a 6.10 to 7.92 e 8.53 to 10.36 11.58 to 13.72 0.61
  0.61 0.61  
PUP JOINTS Lengths: 0.61; 0.91; 1.22; 1.83; 2.44; 3.05 and 3.66 e
  Tolerance: ±0.076
a Length variation applies to rail car shipment to the point of use and does not apply to order items of less than 18,144 kg of pipe.
b By agreement between purchaser and manufacturer, the maximum length may be increased to 8.57 m.
c By agreement between purchaser and manufacturer, the maximum length may be increased to 10.76 m.
d By agreement between purchaser and manufacturer, the maximum length may be increased to 17.72 m.0.61 m pup joints may be furnished up to 0.91 m long by agreement between purchaser and manufacturer, and lengths other than those listed may be furnished by agreement between purchaser and manufacturer.

Finally, OCTG is relatively inexpensive compared to other types of steel pipe. This makes it an attractive option for oil and gas exploration, as it can help reduce the overall cost of the process.

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understanding OCTG grades and specifications for Oil and Gas Production

Labels a           Calculated mass c
    Nominal Linear Mass T& C b,c Wall Thick- ness       em, Mass Gain or Loss Due to End Finishing d
  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
13 3/8 48 339.72 71.43 8.38 322.96 318.99 68.48 15.04 — — 17.91 —
13 3/8 54.5 339.72 81.1 9.65 320.42 316.45 78.55 13.88 — 16.44 —
13 3/8 61 339.72 90.78 10.92 317.88 313.91 88.55 12.74 — 14.97 —
13 3/8 68 339.72 101.19 12.19 315.34 311.37 98.46 11.61 — 14.97 —
13 3/8 68 339.72 101.19 12.19 315.34 311.37 98.46 11.67 f — 14.33 —
13 3/8 72 339.72 107.15 13.06 313.6 311.15 e 105.21 10.98 — 13.98 —
13 3/8 72 339.72 107.15 13.06 313.6 311.15 e 309.63 309.63 105.21 10.91 f — 14.33 —
13 3/8 72 339.72 107.15 13.06 313.6   105.21 10.98 — 13.98 —
13 3/8 72 339.72 107.15 13.06 313.6   105.21 10.91 e —   —
16 65 406.4 96.73 9.53 387.4 382.57 96.73 18.59 — — 20.13 —
16 75 406.4 111.61 11.13 384.1 379.37 108.49 16.66 — 18.11 —
16 84 406.4 125.01 12.57 381.3 376.48 122.09 14.92 — — —
16 109 406.4 162.21 16.66 373.1 368.3 160.13 — —   —
18 5/8 87.5 473.08 130.21 11.05 450.98 446.22 125.91 33.6 — 39.25 —
20 94 508 139.89 11.13 485.7 480.97 136.38 20.5 27.11 24.78 —
20 94 508 139.89 11.13 485.7 480.97 136.38 20.61 27.26 g 24.27 17.84 24.78 —
20 106.5 508 158.49 12.7 482.6 477.82 155.13 18.22   22 —
20 133 508 197.93 16.13 475.7 470.97 195.66 13.03   16.02 —
NOTE See also Figures D.1, D.2, and D.3.
a Labels are for information and assistance in ordering.
b Nominal linear masses, threaded and coupled (Column 4) are shown for information only.
c The densities of martensitic chromium steels (L80 Types 9Cr and 13Cr) are less than those of carbon steels; The masses shown are therefore not accurate for martensitic chromium steels; A mass correction factor of 0.989 shall be used.
d Mass gain or loss due to end finishing; See 8.5.
e Drift diameter for most common bit size; This drift diameter shall be specified in the purchase agreement and marked on the pipe; See 8.10 for drift requirements.
f Based on 758 mPa minimum yield strength or greater.
g Based on 379 mPa minimum yield strength.

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