Document Actions
Unit & Conversion Tables
Unit Table
bbl |
barrel 1 bbl = 42 US gallons or 158.987 litres * |
bcf |
billion cubic feet (billion = one thousand million or 109) ** 6 bcf gas = 1 mmboe |
bcpd |
barrels of condensate per day |
boe |
barrels of oil equivalent |
bopd |
barrels of oil per day |
btu |
British Thermal Unit (unit of heat) -; the amount of heat needed to raise the temperature of one pound of water 1oF 1 btu = 0.252 kcal |
CNG |
compressed natural gas is natural gas compressed to up to 3000 psi and stored in high pressure cylinders |
FPSO |
floating production storage offloading facility |
GJ |
gigajoule = one billion or 109 joules |
ha |
hectare 1 ha = 0.01 km2 or 2.47 acres |
joule |
unit of energy 1 joule = 1/3600 of a kilowatt-hour or 0.738 foot-pounds |
km |
kilometre 1 km = 0.621 miles |
km2 |
square kilometres |
kw |
kilowatt (unit of power) 1 kw = 860 kcal/hour or 1.341 horsepower |
LNG |
Liquefied Natural Gas. Natural gas is a gaseous form of petroleum, usually mainly methane, which becomes a liquid when it is cooled to 160oC at atmospheric pressure |
LPG |
Liquid Petroleum Gas, mainly propane or butane or a mixture of both. These gases can be extracted from natural gas and liquefied by compression to up to 200 psi |
m |
metre 1 m = 3.281 feet |
Ma |
million years before present |
mD |
millidarcy |
methanol |
methyl alcohol (CH3OH) |
mg HC/g Corg |
milligrams of hydrocarbons per gram of organic carbon |
mmbbl |
million barrels |
mmbo |
million barrels of oil |
mmboe |
million barrels of oil equivalent |
mmcfd |
million cubic feet of gas per day |
mmcfg |
million cubic feet of gas |
m.y. |
million years |
PJ |
petajoule = 1015 joules |
scf |
standard cubic feet |
tcf |
trillion cubic feet (trillion = one million million or 1012) |
td |
total depth |
TJ |
terajoule = 1012 joules |
toc |
total organic carbon |
* All numbers are rounded to three decimal places
** In British usage, a billion is a million millions. In American usage, a billion is a thousand millions. The oil industry follows American usage.
Conversion Table
Imperial to Metric *
1 foot |
0.3048 metres |
1 cubic inch |
0.0164 litres |
1 cubic foot |
0.0283 cubic metres |
1 ton |
1.0160 metric tonnes |
1 pound |
0.4536 kilograms |
1 ounce |
0.0283 kilograms |
1 troy ounce |
0.0311 kilograms |
1 acre |
0.004 square kilometres |
1 mile |
1.6093 kilometres, 0.8684 nautical miles |
1 imperial gallon |
4.5461 litres |
1 US gallon |
3.7854 litres |
oF |
9/5 (oC + 32) |
* All numbers are rounded to four decimal places
Metric to Imperial **
1 metre |
39.370 inches, 3.281 feet |
1 cubic metre |
35.315 cubic feet |
1 metric tonne |
0.984 tons |
1 litre |
0.264 US gallon, 0.220 Imperial gallon |
1 square kilometre |
247 acres |
1 kilometre |
0.621 miles, 0.540 nautical miles |
1 kilogram |
2.205 pounds or 35.274 ounces (32.151 troy ounces) |
oC |
5/9(oF - 32) |
