| 0.052 | constant factor |
| bbl | barrels (us) |
| bbl/ft | barrels (us) per foot |
| bbl/min | barrels (us) per minute |
| bbl/stroke | barrels (us) per stroke |
| BHP | bottomhole pressure |
| BOP | blowout preventer |
| ft | feet |
| ft/hr | feet per hour |
| ft/min | feet per minute |
| lb/bbl | pounds per barrel |
| LOT | leak-off test |
| MAASP | maximum allowable annular surface pressure |
| ppg | pounds per gallon |
| psi | pounds per square inch (pressure) |
| psi/ft | pounds per square inch per foot |
| psi/hr | pounds per square inch per hour |
| SICP | shut-in casing pressure |
| SIDPP | shut-in drillpipe pressure |
| SPM | strokes per minute |
| TVD | true vertical depth |