Method and apparatus for producing a drill hole

Details Method and apparatus for producing a drill hole Method and apparatus for producing a drill hole

1981-03-10

1983-08-02

Purser, Ernest R.

Boring or penetrating the earth

Processes

175 94, 299 31, E21B 302

Patent

active

043960723

ABSTRACT:
Producing a vertical or inclined drill hole by full profile drilling taking place upwardly from a starting location and utilizing a rotatable and displaceable drilling tool and a train of drilling rods which lead to the drilling tool, wherein the drilling tool is, together with the train of drilling rods, subjected, in the vicinity of the upper end of the train of drilling rods, to a force applied in the feed direction, at least part of the reaction of this force being transmitted to a counterabutment which can be releasably secured in the drill hole, and the driving torque for the drilling tool being produced at the starting location and mechanically led from there to the drilling tool.

REFERENCES:
patent: 3180437 (1965-04-01), Kellner et al.
patent: 3225843 (1965-12-01), Ortloff et al.
patent: 3604754 (1971-09-01), Kampf-Emden
patent: 3830318 (1974-08-01), Busby et al.
patent: 4095655 (1978-06-01), Still
patent: 4179001 (1979-12-01), Still et al.
patent: 4274675 (1981-06-01), Pavrat et al.

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