An evaluation of Carbon Dioxide Sequestration Potential of Paleozoic Sandstone Units, Northeastern Arizona

Rauzi, S.L.; Spencer, J.E.

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Citation

Rauzi, S.L. and Spencer, J.E., An Evaluation of CO2 Sequestration Potential of Paleozoic Sandstone Units, Northeastern Arizona. Arizona Geological Survey Open File Report, OFR-12-10, 12 p.

Publisher

Arizona Geological Survey (Tucson, AZ)

Description

Northeastern Arizona is underlain by the southwestern part of the Colorado Plateau, an area of gently dipping to slightly folded Paleozoic and Mesozoic strata that include porous and permeable sandstone units. Three Paleozoic sandstone units, the Cambrian Tapeats Sandstone, Devonian McCracken Sandstone, and Permian De Chelly Sandstone, were identified for study as potential targets for CO2 sequestration in order to reduce anthropogenic emissions to the atmosphere. Well logs for 755 drill holes were used to evaluate the extent, depth, and thickness of these sandstone units. Esri® ArcMap™ software was then used to calculate the volume of each sandstone unit where the top of each unit is below 800 m depth, which is the minimum necessary for CO2 sequestration so that the CO2 remains in a dense, near-liquid state. Well logs were used to evaluate porosity, which was then used to calculate effective porosity that is theoretically available for CO2 storage. We calculate that there are 9.7 km3 of effective pore space in the De Chelly Sandstone in Black Mesa basin, with 0.43 km3 and 0.72 km3 effective pore space in the Tapeats and McCracken sandstone units, respectively, in the same area. The total mass of CO2 that, potentially, could be stored in Colorado Plateau sandstone units is calculated at 8.28 billion metric tons. Qualitative information available from well logs suggests that the Tapeats and McCracken sandstones contain saline formation waters, but the character of formation waters in the De Chelly Sandstone remains poorly known.

URI

http://hdl.handle.net/10150/630673

Additional Links

https://library.azgs.arizona.edu/

Language

Series/Report no.

OFR-12-10

Rights

Collection Information

Documents in the AZGS Document Repository collection are made available by the Arizona Geological Survey (AZGS) and the University Libraries at the University of Arizona. For more information about items in this collection, please contact azgs-info@email.arizona.edu.

North Bounding Coordinate

37.001

South Bounding Coordinate

34.4416

West Bounding Coordinate

-111.918

East Bounding Coordinate

-109.05

Collections

AZGS Document Repository