Vortex drill bit

Details Vortex drill bit Vortex drill bit

1996-02-26

1997-05-27

Tsay, Frank

Boring or penetrating the earth

Bit or bit element

With fluid conduit lining or element

175424, E21B 1060

Patent

active

056323492

ABSTRACT:
A drill bit for removing a surface subject to a subsurface pressure and an environmental surface pressure at least equal to the subsurface pressure, which comprises jetting fluid through a nozzle facing and located a predetermined distance from said surface, said nozzle being shaped to eject the fluid in a steam having a higher core pressure than said environmental pressure, said higher pressure stream having adjacent thereto at least one zone of pressure negative relative to said subsurface pressure, said distance being predetermined to expose said surface to said zone of negative pressure, whereby said surface is caused to explode into said zone of negative pressure from the force of said subsurface pressure.

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patent: 3528704 (1970-09-01), Johnson, Jr.
patent: 3713699 (1973-01-01), Johnson, Jr.
patent: 4262757 (1981-04-01), Johnson, Jr. et al.
patent: 4372399 (1983-02-01), Cork
patent: 4378853 (1983-04-01), Chia et al.
patent: 4391339 (1983-07-01), Johnson, Jr. et al.
patent: 4494618 (1985-01-01), Radtke
patent: 4533005 (1985-08-01), Morris
patent: 4886131 (1989-12-01), Cholet et al.

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