back off balanced cement plug barite BBL or bbl bent sub bill of lading bit size blowout blowout preventer stack BML bottomhole bottomhole assembly bottomhole plug bottomhole pressure (BHP) buckling
Bit is the tool used to crush or cut rock. If a wellbore is essentially the same diameter as the bit that was used to drill it, it is called gauge hole. Therefore, bit size is the same as gauge hole size.
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