B

B Class Bulkhead or Deck

B-Annulus

BA

Back Allowable

Back Pressure

Back Reflection

Back Up

Back-Pressure Valve (BPV)

Back-up Line

Back-up Post

Back-Wall Reflection

Backdriving 〈General〉

Backdriving 〈Linear Actuator〉

Backdriving 〈Manual/ROV Operated Choke〉

Backdriving 〈Rotary Actuator〉

Backdriving 〈Stepping-Actuated Choke〉

Backfill

Backflow

Background

Background Load

Backing Plate

Backup

Backup Gradient

BACT

Baffle

Bail

Bailer

Balance

Balanced and Comprehensive Picture

Balanced Cement Plug