Composite tool comprising a polycrystalline diamond active part
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United States of America Patent
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-
Jan 15, 1991
Grant Date -
N/A
app pub date -
Nov 27, 1989
filing date -
May 17, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The composite tool (1) comprises a sintered metal carbide support (2) and a polycrystalline diamond active part (3) having an inner surface (4) of metallurgical connection to the support (2) and an outwardly facing working surface (5). The working surface (5) comprises corrugations (7) which are substantially parallel to one another and form successive projecting zones (7) and hollow zone (8) on at leasst a part of the working surface (5). The composite tool is in particular intended for drilling to a great depth, such as drilling oil wells.
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