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
Annulus
The annulus is the area between two concentric objects, such as, between the wellbore and casing or between casing and tubing, where fluid can flow.
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