Boring or penetrating the earth – With tool shaft detail – Shaft carried guide or protector
Patent
1982-12-30
1985-12-10
Novosad, Stephen J.
Boring or penetrating the earth
With tool shaft detail
Shaft carried guide or protector
175406, 308 4A, 403381, E21B 1710
Patent
active
045573395
ABSTRACT:
A borehole conditioning tool suitable for use in a drill string, the tool including a tubular body portion having a plurality of elongated, circumferentially spaced retainer slots for housing wall contacting members, each retainer slot being defined by a pair of opposed elongated slot side walls and a plurality of wall contacting members in the form of elongated stabilizer blades which are mounted in the retainer slots, each stabilizer blade having a pair of opposed blade side walls. In the borehole conditioning tool the slot side walls and blade side walls are shaped so that for each stabilizer blade one blade side wall is in engagement with one slot side wall, while the opposed blade side wall is in engagement with the opposed slot side wall along only a portion of the length of the blade side wall in at least one interference zone, the degree of interference being sufficient to locate the blade in position in the slot.
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Falknor Charles L.
Lyon Dalton K.
Vetter Vincent H.
Wolfer Dale R.
Hughes Tool Company
Kelly H. Dennis
Neuder William P.
Novosad Stephen J.
Schuurman W. G.
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