A study of intergranular and fissure permeability in Chalk and Permian aquifers, using double packer injection testing.
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Double-packer injection tests have been carried out in a borehole in the Chalk of Hampshire and a borehole in the Permian Penrith Sandstone of Cumbria, England. The tests have been supplemented by borehole logging and television inspections and by laboratory measurements on cores. A new mathematical treatment has enabled results to be calculated for injection test intervals containing fissures. In both formations, transmissivity immediately around the borehole is dominated by a few major fissures. In the Penrith Sandstone there is good agreement between intergranular hydraulic conductivity measurements and packer-test results in the portions of the borehole which do not contain major fissures. In the Chalk, the packer-test values are always higher than the intergranular measurements, suggesting that some degree of fissuring is present throughout.
Journal of Hydrology, Vol. 54, no. 4 (1982-01).
Price, Michael; Morris, Brian; and Robertson, Anne, "A study of intergranular and fissure permeability in Chalk and Permian aquifers, using double packer injection testing." (1982). KIP Articles. 5176.