Drilling Industry Glossary
abandon
abnormal pressure
acidizing
air drilling
alkalinity mud
ambient
angle of deflection
annular blowout preventer
annular pressure
annulus
API cake thickness
API filtrate
API well number
axial load
azimuth
azimuth angle
Annular Blowout Preventer
An annular blowout preventer is a large, specialized valve used to seal, control and monitor oil and gas wells. It is usually installed above the ram preventers that forms a seal in the annular space between the pipe and wellbore or, if no pipe is present, over the wellbore itself.
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