Oil Break down

i was wondering if any of you know how many gallons of Fuel they can get out of one barrel of oil, i know it comes it 55 gallon drums but can they get all 55 gallons turned into fuel for our cars,

and does anyone know about how much oil there is off the coast of alaska and about how long that would last

1 Gallon of Gas = 125,000 BTUs
Source: US Department of Energy

3,400 BTUs = 1 KWH
Source: US Department of Energy, Bonneville Power Mgt.

1 Gallon of Gas = 37 KWH
(125,000 BTUs in a gallon of gas divided by 3,400 BTUs in 1 KWH)

1 Gallon of Gas = 500 hours of human work output
(37 KWH in 1 gallon of gas divided by human work output in agriculture of .074 KW = 500)

1 Barrel of Oil = 5,800,000 BTUs
Source: Louisiana Oil and Gas Association

1 Gallon of Gas = 125,000 BTUs
Source: US Department of Energy

1 Barrel of Oil thus contains the energy contained in 46.4 gallons of gas
(5,800,000 divided by 125,000 = 46.4 )

1 Gallon of Gas = 500 hours of human work output
Source: Calculations Done Above.

1 Barrel of Oil = 23,200 Hours of Human Work Output
(Energy equivalent of 46.4 gallons of gas per barrel of oil x 500 hours of human work ouput per gallon of gas = 23,2000 hours)