Boring or penetrating the earth – Processes
Patent
1983-10-25
1985-10-01
Novosad, Stephen J.
Boring or penetrating the earth
Processes
175104, 175171, 175203, E21B 720
Patent
active
045440417
ABSTRACT:
A well bore casing inserting and drilling method and apparatus comprising the simultaneous drilling and casing setting of an oil and/or gas well bore by supporting a drill bit and actuating motor therefor from the lower end of the well casing whereby the well casing is lowered into the well bore simultaneously with the penetration of the earth by the drill bit assembly, the motor and drill bit being releasably secured within a housing whereby the motor and drill bit may be retrieved through the internal bore of the casing for repair or replacement of the drill bit or other operational components of the apparatus.
REFERENCES:
patent: 2588068 (1952-03-01), Williams et al.
patent: 2784942 (1957-03-01), Peck et al.
patent: 3117636 (1964-01-01), Wilcox et al.
patent: 3169592 (1965-02-01), Kammerer
patent: 3369618 (1968-02-01), Moore
patent: 3389758 (1968-06-01), Buhler
Neuder William P.
Novosad Stephen J.
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