What’s the oil casing used for?
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Oil casing can be divided into different steel grades according…
Classification and use of oil casing
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Surface casing1、Used to seal the upper unstable loose, collapse-prone…
Can I buy a second-hand oil casing?
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In the overlapping area of coal and oil and gas resources, due…
Petroleum casing heat treatment to improve toughness
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Petroleum casing emerged not only for oil extraction but also…