Drilling control apparatus of rock drill

Details Drilling control apparatus of rock drill Drilling control apparatus of rock drill

1997-08-20

1998-12-01

Noori, Max H.

Measuring and testing

Borehole or drilling

Downhole test

7315246, 175 24, E21B 4400

Patent

active

058441336

ABSTRACT:
A drilling control apparatus for automatically controlling the drilling operation of a rock drill includes a control unit for storing known criteria drilling patterns for various rock properties. A specific drilling pattern is selected based upon a collaring procedure for operation of the rock drill. A detector continually monitors variables such as rotational pressure, feed pressure and flushing pressure during the drilling process to determine a change in condition of the rock for determination of automatic selection of another more appropriate drilling pattern.

REFERENCES:
patent: 3670826 (1972-06-01), Hanson et al.
patent: 4157231 (1979-06-01), Phillips
patent: 4246973 (1981-01-01), Mayer
patent: 4354233 (1982-10-01), Zhukpovsky et al.
patent: 4510801 (1985-04-01), Quigley et al.
patent: 4941951 (1990-07-01), Sheppard et al.
patent: 5318136 (1994-06-01), Rosewsell et al.
Shigen-To-Soza; vol. 112 (1996) No. 8 issued by Journal of the Mining and Materials Processing Institute of Japan, pp. 573-574 with English translation (1996).

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