Drilling Industry Glossary
back off
balanced cement plug
barite
BBL or bbl
bent sub
bill of lading (B/L)
bit
bit hydraulic horsepower
bit size
blowout
blowout preventer (BOP)
blowout preventer stack
BML
bottomhole
bottomhole assembly
bottomhole plug
bottomhole pressure (BHP)
breakout
bring in a well
buckling
Bottomhole Pressure (BHP)
The pressure at the bottomhole. For non-flowing conditions, it is caused by the hydrostatic pressure of the wellbore fluid and by any backpressure held at the surface, if any. When wellbore fluid is being circulated, bottomhole pressure is the hydrostatic pressure plus the friction pressure drop in the annulus.
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