Apparatus for drilling into the sidewall of a drill hole

Details Apparatus for drilling into the sidewall of a drill hole Apparatus for drilling into the sidewall of a drill hole

E - Fixed Constructions

21

B

166/6

E21B 49/06 (2006.01) E21B 4/02 (2006.01) E21B 4/18 (2006.01) E21B 7/06 (2006.01)

Patent

CA 1127073

ABSTRACT OF THE DISCLOSURE An apparatus operable on a seven conductor wire- line logging cable for drilling a hole in the sidewall of a drill hole which comprises an elongated housing with a hydraulically operated backup shoe mounted within the housing for wedging the housing at a selected location in the drill hole and a hydraulic motor with a drilling bit connected thereto for rotation by the hydraulic motor. Hydraulic means are mounted within the housing and are connected to the hydraulic motor for moving the bit into drilling engagement with the sidewall of the drill hole. In one embodiment, a core cutting bit is connected to the motor for obtaining a sample of a subterranean formation at the selected location. 79079ART0115

354673

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