Drill bit having cutting elements with heat removal cores

Details Drill bit having cutting elements with heat removal cores Drill bit having cutting elements with heat removal cores

1982-09-30

1984-10-23

Leppink, James A.

Boring or penetrating the earth

Bit or bit element

Magnetized or with magnet

175410, E21B 1046

Patent

active

044782977

ABSTRACT:
A drill bit for connection on a drill string has a hollow tubular body with an end cutting face and an exterior peripheral stabilizer surface with cylindrical sintered carbide inserts positioned therein having polycrystalline diamond cutting elements mounted on said inserts. Said inserts each having a longitudinal recess therein filled with a soft, heat conducting metal operable to facilitate the transfer of heat away from said cutting elements. The drill bit is also provided with removable and replacable nozzles.

REFERENCES:
patent: 1522593 (1925-01-01), Pickin
patent: 4073354 (1978-02-01), Rowley et al.
patent: 4098363 (1978-07-01), Rohde et al.
patent: 4156329 (1979-05-01), Daniels et al.
patent: 4323130 (1982-04-01), Dennis
Chapter entitled "Stratapax Bits", pp. 541-591, published in Advanced Drilling Techniques, by Wm. C. Maurer, The Petroleum Publishing Company, Oklahoma, published 1980.

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