Information Circular--KGS

Abstract

The Kentucky Geological Survey drilled the No. 1 Hanson Aggregates well in northern Carter County, Ky., to assess the carbon dioxide storage capacity and confining intervals in the Middle Cambrian–Upper Ordovician section in the southern Appalachian Basin, north of the Rome Trough. The well was drilled to a total depth of 4,835 ft, penetrating the Mississippian–Middle Cambrian Paleozoic section and 120 ft of Neoproterozoic Grenville granite gneiss. Steel casing was cemented to the surface at 350 ft and 2,944 ft to isolate the deep wellbore from the near-surface aquifer and provide anchors for pressure-control equipment. Eight cores totaling 453 ft and 30 rotary sidewall cores were cut, and an extensive suite of geophysical logs, including imaging logs, was run in the borehole. Core plugs were analyzed in the laboratory to determine porosity and permeability, triaxial rock mechanical strength, and capillary entry pressures for shale core plugs; thin sections were taken of sandstone and carbonate reservoir rocks. From these data, three intervals were selected for formation-water sampling, step-rate pressure testing to determine in-situ rock strength, and determining reservoir porosity and permeability parameters: the Maryville sand–Basal sand section, middle Copper Ridge Dolomite, and Rose Run Sandstone. Although CO2 injection testing was cost-prohibitive, the project has otherwise successfully delivered the high-quality data required to assess CO2 storage capacity and subsurface confinement in the southern Appalachian Basin of northeastern Kentucky.

Publication Date

11-20-2018

Series

Series XIII

Issue Number

Information Circular 1

Digital Object Identifier (DOI)

https://doi.org/10.13023/kgs.ic1.13

Funding Information

This project was funded as part of an appropriation from the Commonwealth of Kentucky to KGS under the Incentives for Energy Independence Act of 2007.

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