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A chilled liquid would be circulated through a closed system of pipes causing the water in the surrounding rock to freeze and eventually form a wall of ice. This freeze wall will serve as a barrier to keep groundwater out of the contained reservoir.
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Surface facilities for the freeze wall include access points to the closed-loop pipe system, monitoring wells and groundwater wells, which will pump out the groundwater from the inside the contained reservoir once the freeze wall is built.
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Up to 2,000 feet beneath the surface, the shale layer is a rock formation containing an organic matter (kerogen). It is this organic matter trapped in the rock that results in oil and gas when gradually
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for more information. If an SVG form of this image is available, please upload it and afterwards replace this template with
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http://www.blm.gov/pgdata/etc/medialib/blm/co/field_offices/white_river_field/oil_shale/shell_frontier_oil.Par.48996.File.dat/figure5_FreezeWall.pdf
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From the US Bureau of Land
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Shell will drill a maximum of 150 holes spaced about 8 feet apart in order to create the closed-loop pipe system.
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If the file has been modified from its original state, some details may not fully reflect the modified file.
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It is recommended to name the SVG file “Shell Freeze Wall Oil Shale.svg”—then the template
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US Bureau of Land
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Add a one-line explanation of what this file represents
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Commons is a freely licensed media file repository.
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