Composite tool comprising a polycrystalline diamond active part

Details Composite tool comprising a polycrystalline diamond active part Composite tool comprising a polycrystalline diamond active part

1989-11-27

1991-01-15

Britts, Ramon S.

Boring or penetrating the earth

Bit or bit element

Magnetized or with magnet

175410, 407118, E21B 1046

Patent

active

049846426

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.

REFERENCES:
patent: 4604106 (1986-08-01), Hall et al.
patent: 4858707 (1989-08-01), Jones et al.
patent: 4872520 (1989-10-01), Nelson

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