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| AV || Annular velocity || ft/min ...wellbore due to changes in pipe, collar, and hole sizes. Annular velocity (AV) can be calculated as

...interfaces with weak geomechanical contrasts), and a thick vertical stack (av. 30–40 m) of lithofacies with the aforementioned characteristics ([[:file

...l content of carbonate cement of the delta-front and pro-delta sandstones (av. 4.0% and 4.2%, respectively) accounts partly for the considerably lower re