United States and World Hydrocarbon Resources and Endowment

Gary S. Swindell, Petroleum Engineering, Dallas, Texas

Having never seen the world hydrocarbon resources tablulated in one place, I attempted to assemble the information.  It is a continuing effort and certainty incomplete.  There is much better data available for the U.S. than the rest of the world.  Note the consumption to date and how it compares with the total.  Much of the endowment cannot be remotely considered as recoverable at present and may never be viable.

The data are from a variety of sources including Energy Information Administration, The Oil and Gas Journal 4/14/2008, 11/05/2007, 11/12/2007, 12/17/2007, 2/4/2008; SPE Paper 103514; 20th Century Petroleum Statistics (DeGolyer and MacNaughton); and others -

http://geology.usgs.gov/connections/mms/joint_projects/methane.htm

http://energy.usgs.gov/factsheets/Coalbed/coalmeth.html

http://geology.usgs.gov/connections/mms/joint_projects/methane.htm

http://www.naturalgas.org/overview/resources.asp

US Hydrocarbon Resources - Billions of barrels Equivalent

 - leaving out coal resources which overwhelms the other numbers and methane hydrates

Coal reserves 69

Coal consumed 249

Coal remaining recoverable 975

Heavy Oil 100

Tar Sands 54

Oil Shale 2,118

Oil consumed 197

Oil reserves 23 - (this number has been almost constant for 15 years as additions replaced production)

Oil remaining in place 307

Oil resources 216 (undiscovered and other resources)

Coalbed methane resources 124

Shale gas resources 215

Natural gas reserves 38

Natural gas resources 205

Natural gas consumed 172


US Hydrocarbon Resource Endowment - Billions of barrels Equivalent

Coal reserves 69

Coal consumed 249

Coal remaining recoverable 975

Coal remaining resources 13,032

Heavy Oil 100

Tar Sands 54

Oil Shale 2118

Oil consumed 197

Oil reserves 23 - (this number has been almost constant for 15 years as additions replaced production)

Oil remaining in place 307

Oil resources 216 (undiscovered and other resources)

Natural gas reserves 38

Natural gas consumed 184

Natural gas resources 205

Shale gas resources 215

Coalbed methane resources 124

Gas hydrate low estimate 1,648 (estimates are all over the map - this is a lower number)


World Hydrocarbon Resource Endowment - Billions of barrels Equivalent

 - no good estimate found for Coal resources

Coal reserves 3,550

Coal consumed 1,884

Coal remaining recoverable 3,000 - (approximated from U.S. figures)

Coal resources - USA only 13,032  (have not found any data on the rest of the world)

Tar Sands, oil shale 3,000 - (probably very low - the U.S. alone has 2,118 BBBLe in oil shales and Canada's tar sands are estimated to be 1,700-2,500 BBBLe)

Heavy oil 3,000

Oil consumed 1,011

Oil reserves 1,121 - (does not include undiscovered oil)

Oil remaining in place 7,668 - (in known fields)

Natural gas reserves 1,112

Natural gas consumed 547 - (historical data was not well recorded outside the U.S.)

Natural gas resources 2,172

Coabed methane resources 1,600 - (probably very low - extensively developed only in the U.S.)

Shale methane resources 2,844

Gas hydrate resources - ocean - low est. 5,333 - (estimates are all over the map - this is a lower number)

Gas hydrate resources - land - low est. 889 - (estimates are all over the map - this is a lower number)


Notes:

Conversions

1 BCF = 166,666 BBL

1 short ton = 20,754,000 btu

1 ft3 gas = 1031 btu

1 bbl = 5,800,000 btu

1 ft3 oil = 1,033,131 btu

1 short ton = 3.54724 bbl BTU equivalent

1 mcf = .17776 bbl BTU equivalent

1 bbl = 5.62 mcf BTU equivalent

Gary S. Swindell, Petroleum Engineering, Dallas, Texas