Page 107 - Oil and Gas Production Handbook An Introduction to Oil and Gas Production

8 Units

Some common units used in the oil and gas industry. I have listed a
representative selection of US and metric units since both are used in
different parts of the oil industry. The non-standard factors differ slightly
between different sources.

API American Petroleum API = (141.5 / Specific gravity ) + 131,5
Institute crude grade 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/tonnes 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 1 MMscf = 23.8 TOE ≈ 174 barrels
Feet
psi Pounds Per Square 1 psi = 6.9 kPa = 0.069 atm
Inch
Scf Standard Cubic Feet 1 scf = 1000 BTU = 252 kcal
(of gas) Defined by = 293 Wh = 1,055 MJ
energy not a normalized ≈ 0.0268 scm
volume
Scm Standard Cubic metre 1 Scm = 39 MJ = 10.8 kWh
(of gas, also Ncm) 1 Scm ≈ 37.33 Scf (not a volume conv.)
Defined by energy 1 Scm ≈ 1.122 kg
content
TOE Tons oil equivalent 1 TOE = 1000 kg = 1 Ton (metric) oil
1 TOE = 1 Tonne oil (US)
Range 6.6 - 8 barrels at 1 TOE ≈ 7.33 Barrels (at 33 API)
API range 8 - 52 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 kiloWatthour 1 kWh = 3.6 MJ = 860 kcal = 3,413 BTU
= 1000 Joules * 3600 S

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