Boring or penetrating the earth – Means carried by housing insertable in inaccessible hole to...
Patent
1981-11-16
1983-08-02
Purser, Ernest R.
Boring or penetrating the earth
Means carried by housing insertable in inaccessible hole to...
175 58, 175 61, E21B 2502, E21B 4906
Patent
active
043960740
ABSTRACT:
This invention relates to an apparatus for cutting cores from the sidewall of a borehole after the borehole has been drilled. The apparatus includes an elongated housing which supports guide means which provides a path along which a core bit and motor can be moved to extend and retract the core bit. The guide means has a rotational control section and a transverse control section. The rotation control section guides the motor and its core bit from an upright position in the housing to a selected angle and the vertical transverse control section guides the coring bit means in the direction of the formation.
REFERENCES:
patent: 2354399 (1944-07-01), Noble
patent: 2456331 (1948-12-01), Sewell
patent: 2599405 (1952-06-01), Mennecier
patent: 3107740 (1963-10-01), Cante
Jageler Alfred H.
Kilmer Lauren G.
Mount II Houston B.
Terral George W.
Falk Joseph
Gassett John D.
Purser Ernest R.
Standard Oil Company (Indiana)
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