Bottom Hole Assembly
A bottom hole assembly (BHA) is the lower part of the drill string, extending up from the bit to the drill pipe. The assembly can consist of drill collars, stabilizers, reamers, shocks, hole openers, and the bit sub and bit.
A bottom hole assembly (BHA) is the lower part of the drill string, extending up from the bit to the drill pipe. The assembly can consist of drill collars, stabilizers, reamers, shocks, hole openers, and the bit sub and bit.
