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Core Sealing

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This research investigates the sealing of cores of granular material (sands and granite) and fine aperture fractures in rock using the microbial precipitation of carbonates. This project will use the procedure which has been successful in sealing artificial fracture networks in the laboratory and will apply it to the sealing of porous media and fractured rock cores. A key part of these projects involves testing the strength of the cores which have been sealed using microbial precipitation. Of particular interest is the relative strength or weakness of the sealed rock fractures with respect to the intact rock, which would dictate subsequent failure patterns.

SEM image of sand core after microbial precipitation: quartz grains in red and microbially precipitated calcite is shown in yellow, remaining pore space is black.

Last Updated on Wednesday, 22 June 2011 09:24