ACTIVATED EARTH DRILL

The invention relates to a method of earth drilling by means of a drill bit which is attached to a drill rod and includes the steps of rotating the bit on the drill rod axis and rotating an eccentric weight by means in the bit to impart a hammer action to the bit. The drill bit includes a drive arra...

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Bibliographic Details
Main Authors BE, PHILIP C, BE, ULRICH W, BE, KLAUS
Format Patent
LanguageEnglish
French
Published 10.08.1993
Edition5
Subjects
EARTH DRILLING
EARTH DRILLING, e.g. DEEP DRILLING
FIXED CONSTRUCTIONS
MINING
OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
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Summary:The invention relates to a method of earth drilling by means of a drill bit which is attached to a drill rod and includes the steps of rotating the bit on the drill rod axis and rotating an eccentric weight by means in the bit to impart a hammer action to the bit. The drill bit includes a drive arrangement having two opposed drive shafts which are transverse to the drill rod axis, means for driving the shafts and a rock comminuting cutter which is eccentrically mounted on each of the shafts.
Bibliography:Application Number: CA19870534636