Arrangement for guiding a bore-crown or bit along a given path

Details Arrangement for guiding a bore-crown or bit along a given path Arrangement for guiding a bore-crown or bit along a given path

E - Fixed Constructions

21

B

255/6

E21B 7/06 (2006.01) E21B 7/08 (2006.01) E21B 17/20 (2006.01)

Patent

CA 1086295

ABSTRACT OF THE DISCLOSURE An arrangement for guiding a drill crown or bit in a given drilling path comprises an outer guide tube in which a shaft is rotatably arranged. The shaft is driven by a drive mean connected to one end of the shaft, whilst the bit is mount- ed for rotation on and guided by the other end of said shaft. The axis of rotation of the bit forms an angle ( .alpha. ) with the central axis of the guide tube, said tube being non-rotatably, but axially displaceably connected to an axially feeding device through intermediate means.

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