MRCSP Phase I Geologic Characterization Report - Midwest ...
MRCSP Phase I Geologic Characterization Report - Midwest ...
MRCSP Phase I Geologic Characterization Report - Midwest ...
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124 CHARACTERIZATION OF GEOLOGIC SEQUESTRATION OPPORTUNITIES IN THE <strong>MRCSP</strong> REGION<br />
In the Appalachian basin, the primary gas producing area extends<br />
from eastern Kentucky, across central West Virginia, into eastern<br />
Ohio and through northwestern Pennsylvania (Figure A14-5). In<br />
the Michigan basin, Antrim Shale production is most prolific in an<br />
eight-county area across northern lower Michigan (Figure A14-5).<br />
The Devonian shale interval should also prove to be a most effective<br />
seal for sequestering CO 2 in stratigraphically lower reservoirs.<br />
Their great thickness and low permeability will inhibit movement<br />
upwards through the shale, especially in non-fractured areas. In addition,<br />
the ability of organic-rich shales to adsorb CO 2, as discussed<br />
above, may be a seal benefit by “soaking up” any CO 2 that may<br />
migrate from other reservoirs.<br />
Figure A14-4.—Type log from the Big Sandy gas field in eastern Kentucky<br />
illustrating the alternating black (high gamma-ray, greater than 280 API<br />
units) and gray (low gamma-ray) shales.