Boring or penetrating the earth – Below-ground impact members – Fluid-operated
Patent
1988-12-13
1990-07-10
Kisliuk, Bruce M.
Boring or penetrating the earth
Below-ground impact members
Fluid-operated
175415, 175417, 173 73, 173 78, E21B 1038, E21B 1046
Patent
active
049400975
ABSTRACT:
A novel fluid powered rotary percussion drill is disclosed having a small, efficient, fluid energy to impulsive mechanical energy conversion motor and a unique bit arrangement wherein individual independently acting formation disintegration inserts are periodically actuated by the motor at a comparatively high cycle frequency to drill earthen boreholes. Bit drilling structure is renewable by replacing individual inserts and better borehole diameter and bit cutting ability is maintained by rotational gage row inserts. Bottom borehole sensing structure determines drill operational mode.
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Kisliuk Bruce M.
O'Neil Michael A.
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