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Drilling Industry Glossary

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B

Bottomhole assembly

back off
balanced cement plug
barite
BBL or bbl
bent sub
bit size
BML
bottomhole
bottomhole assembly
bottomhole plug
bottomhole pressure (BHP)

The bottomhole assembly is the portion of the drilling assembly below the drill pipe. It can be as simple as bit and drill collars or it can be very complex and made up of multiple components.