Steerable horizontal subterranean drill bit having an offset drilling fluid seal

   
   

Various steerable horizontal subterranean drill bit apparatuses, which may have a drill bit, a housing and a one-bolt attachment system, or other features.

Vários instrumentos subterranean horizontais steerable do bocado de broca, que podem ter um bocado de broca, uma carcaça e um sistema do acessório do um-parafuso, ou outras características.

 
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