Drill bit with suction jet means

Details Drill bit with suction jet means Drill bit with suction jet means

1978-01-26

1980-12-23

Purser, Ernest R.

Boring or penetrating the earth

Bit or bit element

Rolling cutter bit or rolling cutter bit element

175213, E21B 908

Patent

active

042405130

ABSTRACT:
This drill bit comprises a plurality of rollers provided with cutting teeth or inserts.
At least one vertical fluid flushing jet is directed towards the hole bottom between two adjacent rollers and at least one upwardly directed education jet is created. The nozzle delivering the flushing jet opens at a distance from between 1/3 H and 4/5 H from the hole bottom, H being the height of the cutters measured in a direction parallel to the bit axis.

REFERENCES:
patent: 1816481 (1931-07-01), Hansen
patent: 2776115 (1957-01-01), Williams, Jr.
patent: 3111179 (1963-11-01), Albers et al.
patent: 3419091 (1968-12-01), Gardner
patent: 3605918 (1971-09-01), Bennett
patent: 3945446 (1976-03-01), Ostertag et al.
patent: 4022285 (1977-05-01), Frank
patent: 4071097 (1978-01-01), Fulop et al.
patent: 4077482 (1978-03-01), Ioannesian et al.

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