Drilling stabilizer
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United States of America Patent
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Mar 20, 2001
Grant Date -
N/A
app pub date -
May 27, 1999
filing date -
May 28, 1998
priority date (Note) -
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Abstract
A high-performance drilling stabilizer is provided that is high in both wear resistance and strength. Blades are bonded to a stabilizer body. The blade is split into at least two segments. The blade segments are bonded to the stabilizer body to form the blade. A laminate made of cemented carbide and having a laminate structure made up of at least two layers is bonded to the top of each of the blade segments. The laminate has a thickness of between 1 mm and 5 mm. The cobalt contents of the respective layers decrease stepwise from the innermost layer toward the outermost layer.
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