| API |
American Petroleum Institute crude grade |
API = (141.5 / Specific gravity ) – 131.5
Spec gravity = 141.5 / (API + 131.5) kg/l |
| Bl |
Barrel (of oil) |
1 Bl = 42 Gallons
1 Bl = 159 liters
1 Bl equiv. to 5487 scf = 147 scm gas |
| Bpd |
Barrel per day |
1 Bpd ≈ 50 tons/tons per year |
| BTU |
British thermal unit |
1 BTU = 0.293 Wh = 1,055 kJ |
| Cal |
Calorie |
1 Cal = 4,187 J (Joules) |
| MMscf |
Million standard cubic feet |
1 MMscf = 23.8 TOE ≈ 174 barrels |
| psi |
Pounds per square inch |
1 psi = 6.9 kPa = 0.069 atm |
| Scf |
Standard cubic feet (of gas) defined by energy, not a normalized volume |
1 scf = 1000 BTU = 252 kcal = 293 Wh = 1,055 MJ ≈ 0.0268 scm |
| Scm |
Standard cubic meter (of gas, also Ncm) Defined by energy content |
1 Scm = 39 MJ = 10.8 kWh
1 Scm ≈ 37.33 Scf (not a volume conv.)
1 Scm ≈ 1.122 kg |
| TOE |
Tons oil equivalent
Range 6.6 - 8 barrels at API range 8 - 52 |
1 TOE = 1000 kg = 1 Ton (metric) oil
1 TOE = 1 Tone oil (US)
1 TOE ≈ 7.33 Barrels (at 33 API)
1 TOE ≈ 42.9 GJ = 11,9 MWh
1 TOE ≈ 40.6 MMBTU
1 TOE ≈ 1.51 ton of coal
1 TOE ≈
0.79 ton LNG
1 TOE ≈ 1,125 Scm = 42,000 Scf
|
| kWh |
Kilowatt hour = 1000 joules * 3600 S |
1 kWh = 3.6 MJ = 860 kcal = 3,413 BTU |