Products & Services Products & Services World class manufacturer of seamless tubes, tube based products & alloy steels
  • » Products & Services
    • » Tubes
      • » OCTG Products » High Collapse Casing
  High Collapse Casing Pipes for
  Deep Oil and Gas Wells
 
ISMT High Collapse Casings are seamless tubes designed to withstand high external pressures in deep oil and gas wells. These casings are specially manufactured such that they have improved collapse properties, well in excess of API requirements.

The external pressure on the casings is directly proportional to the depth of the well. Hence, casings in deep wells are required to sustain high internal pressures, tension loads, and collapse pressures.
 
The ISMT Advantage
 
With a unique combination of Assel mills and a PQF mill, ISMT is one of the largest, and most experienced specialized manufacturers of precision seamless tubes in the world. Moreover, we are an integrated mill in that we melt all our steel in-house. As a result, we have complete control over our production process right from the production of raw material till the processing and inspection of the finished casing.

Ensuring High Collapse Properties
 
The collapse properties of the casings are directly related to the dimensional parameters of the tube (in turn a function of the tube rolling process), and the material properties of the tube (a function of the quality of the steel and the heat-treat process of the tube).
In order to guarantee the collapse properties of the casings, and to ensure consistency of these properties across batches, we maintain strict control over the entire production process, right from the melting of steel, the rolling of the tubes, to the quench & temper of the tubes. All the steel that is used for making high collapse casings is ladle refined and vacuum degassed to ensure a clean, inclusion free steel. Tube rolling parameters are tightly controlled so that ovality, eccentricity, and wall thickness variation, factors that are detrimental to collapse, are minimized. Each tube is then carefully checked to ensure conformance with specifications.
 
Our marketing executives and application engineers will be happy to meet with you to understand your deep well requirements so that we can serve you better.


For more information on ISMT High Collapse Casings and other OCTG products, please contact:

Sanjeev Ahuja:
+91 20 4143 4131 | sanjeev.ahuja@ismt.co.in


ISMT Limited, Lunkad Towers, Viman Nagar, Pune 411014, India. Phone: +9120 41434100 / 4101 | Fax: +9120 26630779 www.ismt.com
   
Sizes, Mechanical Properties and Other Specifications.
   
DIMENSION(STANDARD DRIFT) ISMT 55 HC   ISMT 80 HC   ISMT 110 HC   Pipe Inspection Colour
Coding for
coupling
Outside Diameter Weight Wall Thickness Y.S.RANGE U.T.S Min Y.S.RANGE U.T.S Min Y.S.RANGE U.T.S Min
Ksi (Mpa) Ksi (Mpa) Ksi (Mpa) Ksi (Mpa) Ksi (Mpa) Ksi (Mpa)
55 (379)-80 (552) 95 (655) 80 (552)-110 (758) 110 (690) 110(758)-140 (965) 125 (862)
Collapse Pressure
INCH / MM PPE KG / MTR INCH MM PSI MPA PSI MPA PSI MPA
4-1/2 114.3 10.5 15.62 0.224 5.69 5414 37.33 6666 45.97 7501 51.73
11.6 17.26 0.250 6.35 6696 46.18 8573 59.12 10233 70.57
13.5 20.09 0.290 7.37 5409 37.31 11529 79.51 14432 99.53
15.1 22.47 0.337 8.56 10290 70.96 14967 103.22 19359 133.51
5
127
13 19.34 0.253 6.43 5589 38.54 6942 47.87 8768 60.47  
15 22.32 0.296 7.52 7506 51.77 9788 67.50 11948 82.40  
18 26.78 0.362 9.19 9974 68.78 14162 97.67 18185 125.41 ISMT 55 HC
21.4 31.84 0.437 11.10 11846 81.70 17226 118.80 23693 163.40
23.2 34.52 0.478 12.14 12840 88.55 18671 128.76 25677 177.08
24.1 35.86 0.500 12.70 13365 92.17 19440 134.07 26730 184.34
5-1/2
139.7
14 20.83 0.244 6.20 4212 29.05 4886 33.69 6029 41.58  
15.5 23.06 0.275 6.99 5454 37.61 6741 46.49 8486 58.52  
17 25.30 0.304 7.72 6629 45.71 8492 58.56 10098 69.64
20 29.76 0.361 9.17 8928 61.57 11921 82.21 14985 103.34  
23 34.22 0.415 10.54 11116 76.66 15066 103.90 1629 135.37  
6-5/8
168.3
20 29.76 0.288 7.32 4010 27.65 4571 31.52 5755 39.69
24 35.71 0.352 8.94 6156 42.46 7776 53.63 9086 62.66
28 41.66 0.417 10.59 8331 57.45 11030 76.07 13716 94.59
32 47.62 0.475 12.07 9882 68.15 13932 96.08 17847 123.08  
7
177.8
23 34.22 0.317 8.05 4415 30.44 5171 35.66 6310 43.52  
26 38.69 0.362 9.19 5846 40.31 7304 50.37 8411 58.00 ISMT 80 HC
29 43.15 0.408 10.36 7295 50.31 9491 65.45 11516 79.42
32 47.62 0.453 11.51 8729 60.20 11610 80.07 14553 100.37
35 52.08 0.498 12.65 9810 67.66 13743 94.78 17591 121.31
38 56.54 0.540 13.72 10575 72.93 15377 106.04 20426 140.87
7-5/8
193.68
29.7 44.19 0.375 9.53 5279 36.40 6467 44.60 7223 49.81
33.7 50.15 0.430 10.92 6881 47.45 8856 61.08 10625 73.27
39 58.03 0.500 12.70 8918 61.50 11907 82.12 14958 103.16  
42.8 63.69 0.562 14.27 10137 69.91 14594 100.64 18806 129.69  
45.3 67.41 0.595 15.11 10680 73.65 15539 107.16 20844 143.75
47.1 70.08 0.625 15.88 11174 77.06 16254 112.10 22343 154.09
8-5/8
219.1
24 35.71 0.264 6.71 1850 12.76 1933 13.33 1933 13.33
32 47.62 0.352 8.94 3416 23.56 4116 28.39 5692 39.25 ISMT 110 HC
36 53.57 0.400 10.16 4658 32.12 5535 38.17 7383 50.92
40 59.52 0.450 11.43 5940 40.97 7452 51.39 8627 59.49
44 65.47 0.500 12.70 7229 49.86 9383 64.71 11367 78.39
49 72.91 0.557 14.15 8693 59.95 11570 79.79 14486 99.90
9-5/8
244.48
36 53.57 0.352 8.94 2727 18.81 3205 22.10 3669 25.31
40 59.52 0.395 10.03 3470 23.93 4172 28.77 5021 34.63
43.5 64.73 0.435 11.05 4390 30.28 5144 35.47 5967 41.15
47 69.94 0.472 11.99 5246 36.18 6413 44.22 7155 49.34
53.5 79.61 0.545 13.84 6931 47.80 8937 61.63 10733 74.02
   
 
© 2011 ISMT Ltd. All Rights Reserved.