Threaded tubular joint comprising sealing surfaces
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United States of America Patent
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Sep 15, 2009
Grant Date -
Sep 29, 2005
app pub date -
Dec 24, 2002
filing date -
Jan 3, 2002
priority date (Note) -
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Abstract
A tubular joint for hydrocarbon wells including a male tubular element and a female tubular element including respective sealing faces configured to come into mutual sealing-tight contact after sliding over one another during assembly and/or during radial expansion of the joint. At least one of the sealing faces is equipped with an adhesive coating of a more ductile material than the material of the substrate and of a thickness greater than 17 μm, capable of increasing the effective contact area of the sealing faces.
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