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File:Shell Freeze Wall Oil Shale.png

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    Summary

    Description
    English: Caption: (1) 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. (2) 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. (3) Shell will drill a maximum of 150 holes spaced about 8 feet apart in order to create the closed-loop pipe system. (4) 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 heated.
    Source 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
    Author US Bureau of Land Management, Shell EIA of their Oil Shale Project

    Licensing

    Public domain This image is a work of a Bureau of Land Management* employee, taken or made as part of that person's official duties. As a work of the U.S. federal government, the image is in the public domain in the United States.
    *or predecessor organization

    Original upload log

    The original description page was here. All following user names refer to en.wikipedia.
    Date/Time Dimensions User Comment
    2009-10-31 01:23:07 677× 743× Splette remove text from image and put it in caption
    2009-10-30 14:44:21 1284× 743× Splette better quality + crop
    2007-07-06 19:17:09 860× 580× Dexcel From the US Bureau of Land Management, Shell EIA of their Oil Shale Project http://www.co.blm.gov/wrra/documents/figure5_FreezeWall.pdf

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    Date/TimeThumbnailDimensionsUserComment
    current20:00, 5 November 2016Thumbnail for version as of 20:00, 5 November 2016677 × 743 (185 KB)FastilyCloneTransferred from en.wikipedia (MTC!)

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