Jet nozzle drilling assembly

Details Jet nozzle drilling assembly Jet nozzle drilling assembly

1976-10-08

1977-06-28

Purser, Ernest R.

Boring or penetrating the earth

With below-ground tool drive prime mover

Fluid rotary type

1510412, 175 67, 175422, 239259, E21B 106

Patent

active

040319717

ABSTRACT:
A drilling assembly including a jet nozzle bit rotatable on a fluid supply shaft. The assembly includes a bearing housing protected by seals and vent ports to prevent fluid which has leaked between the fluid supply shaft and the jet nozzle bit from contaminating the bearings.

REFERENCES:
patent: 142992 (1873-09-01), Cross
patent: 1060929 (1913-05-01), Monberg
patent: 2218130 (1940-10-01), Court
patent: 3844362 (1974-10-01), Elbert et al.

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