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. |
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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.
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| 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). |
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| 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. |
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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
Lunkad Towers, Viman Nagar, Pune 411014, India.
Phone: +9120 41434100 / 4101 | Fax: +9120 26630779
www.ismt.com |
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