What is Oil Shale?
” 1) U.S. western oil shale is carbonate rock,
generally marlstone that is very rich in organic
sedimentary material called “kerogen.” Eastern
shales are more often silica based.
2) Oil shales are “younger” in geologic age than
crude oil-bearing formations; natural forces of
pressure and temperature have not yet converted
the sediments to crude oil.
3) Kerogen can be converted to superior quality jet
fuel, #2 diesel, and other high value by-products.
4 )The kerogen content of “oil shale” ore can range from 10 to 60 or more gallons of oil per ton.
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Where is Oil Shale Found?
1) The richest, most concentrated deposits are found
in the Green River Formation in western
Colorado, southeastern Utah, and southern
Wyoming.
2) Other significant, less concentrated deposits exist
in the Devonian, Antrim, and Chattanooga shale
formations in several eastern and southern states
and parts of Alaska.
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How Much Oil Shale Does America Have?
1) America’s total oil shale resources could exceed
6 trillion barrels of oil equivalent. However, most
of the shale is in deposits of insufficient thickness
or richness to access and produce economically.
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How Much Oil Shale Could Be Recovered?
1) Potentially recoverable resources are generally
deemed to be at least 15 feet thick and have
potential yields of 15 gallons per ton or more.
2) Oil shale yields more than 25 U.S. gal/ton are
generally viewed as the most economically
attractive, and hence, the most favorable for
initial development.
3) About 1.8 trillion barrels of shale oil are thought
to reside in deposits greater than 15 gallons per
ton in the Colorado, Utah, and Wyoming.
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What is the Area of the Green River Formation?
1) Oil shale underlies 17,000 square miles or 11
million acres in the Piceance (CO), Uinta (UT),
Green River, Washakie (WY), and Sand Wash
(CO) Basins.
2) The Piceance Basin, which contains more than 80
percent of the recoverable resources of the Green
River Formation, underlies a 35 mile by 35 mile
(1,225 sq miles) area of western Colorado.
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How Much Oil Shale Does America Have?
1) America’s total oil shale resources could exceed
6 trillion barrels of oil equivalent. However, most
of the shale is in deposits of insufficient thickness
or richness to access and produce economically.
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How Much Oil Shale Could Be Recovered?
1) Potentially recoverable resources are generally
deemed to be at least 15 feet thick and have
potential yields of 15 gallons per ton or more.
2) Oil shale yields more than 25 U.S. gal/ton are
generally viewed as the most economically
attractive, and hence, the most favorable for
initial development.
3) About 1.8 trillion barrels of shale oil are thought
to reside in deposits greater than 15 gallons per
ton in the Colorado, Utah, and Wyoming.
4) Green River Formation Oil Shale Deposits The thickest and richest resources have the greatest technical recoverability and economic potential.
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Who Owns the Oil Shale Resources?
1) The U.S. Government owns and manages about
73 percent of the lands that contain significant oil
shale deposits in the west. Federal lands contain
about 80 percent of the known recoverable
resource in Colorado, Utah, and Wyoming.
2) As on 1978, private company ownership of oil
shale lands in Colorado, Wyoming, and Utah
totaled about:
— 21 percent of the Piceance Basin (CO)
— 9 percent of the Uinta Basin (UT)
— 24 percent of the Green River Basin (WY)
— 10 percent of the Washakie Basin (WY).
3) State governments and localities and Native
American Tribes also own oil shale lands.
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How Do We Know How Much Oil Shale Exists?
1) More than a quarter million assays have been
conducted on core and outcrop samples for the
Green River oil shale.
2) Results show that the richest zone, known as the
Mahogany zone, is located in the Parachute
Creek member of the Green River Formation.
This zone can be found throughout the formation.
Because of its relatively shallow nature and
consistent bedding, the resource richness is well
known, giving a high degree of certainty as to
resource quality.
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How Do U.S. Oil Shale Resources Compare with
other U.S. and Canadian Energy Resources?
1) U.S. western oil shales are more concentrated on
a resource per acre basis than Alaskan North
Slope oil or Alberta’s tar sands.”
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