Hydraulic energy drill bit

Details Hydraulic energy drill bit Hydraulic energy drill bit

1983-02-22

1985-01-08

Leppink, James A.

Boring or penetrating the earth

Bit or bit element

Magnetized or with magnet

175393, E21B 1060

Patent

active

044922779

ABSTRACT:
A drill bit for drilling a rock foundation is provided having a bit face matrix for supporting a plurality of cutters, the matrix having one or more fluid passages for discharging a fluid to flow over the bit face. To enhance the cleaning and cooling of the plurality of cutters, the bit face matrix includes a nozzle for restricting the surface fluid flow area between the foundation and the bit face to create a high velocity radial fluid flow across the entire surface area of the bit face matrix. This fluid flow prevents debris from accumulating on the plurality of cutters thus providing cooling thereof. In addition, improved fluid distribution is provided by a spiraling dams structure extending from the nozzle radially outward over substantially the entire bit face matrix. This structure enhances the flushing of the debris from the bit face by accelerating the debris and drilling fluid to the outer diameter of the bit.

REFERENCES:
patent: Re25319 (1963-01-01), Short
patent: 3357507 (1967-12-01), Stewart
patent: 4323130 (1982-04-01), Dennis
patent: 4350215 (1982-09-01), Radtke

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