Methods for rock mining with non-coring rotary tools

Details Methods for rock mining with non-coring rotary tools Methods for rock mining with non-coring rotary tools

1993-09-07

1995-01-24

Dang, Hoang C.

Boring or penetrating the earth

Processes

E21B 700

Patent

active

053835263

ABSTRACT:
A method of drilling rock bores utilizing a non-coring HDC rotary mining tool operated at moderate rotational speeds, reduced axial thrust and with delivery of flushing fluids to the PCD cutter inserts of the tool at substantially high fluid pressures.

REFERENCES:
patent: 4352400 (1982-10-01), Grappendorf et al.
patent: 4463220 (1984-07-01), Gonzalez
patent: 4511006 (1985-04-01), Granger
patent: 4535853 (1985-08-01), Ippolito et al.
patent: 4696352 (1987-09-01), Buljan et al.
patent: 4751972 (1988-06-01), Jones et al.
patent: 4787464 (1988-11-01), Ojanen

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