Page 22 - Air and Gas Drilling Manual
P. 22
List of Abbreviations xxiv
ppg
= pounds per square inch
psi
= pounds per square inch
psia
= pounds per gallon
atmosphere
psig = pounds per square inch
gauge
p-v = pressure-volume
rpm = rotations per minute
scfm = standard cubic feet per
minute
SI = Systeme Internationale
d’Units
3
slugs/ft = slugs per cubic foot
TD = total depth
Ten. = tension
US = United States
WOB = weight on bit
Yd. = yield
