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Title: Numerical investigation of Lower Tuscaloosa Sandstone and Selma Chalk caprock under geological CO 2 sequestration conditions: mineral precipitation and permeability evolution

Abstract

Abstract A numerical model was developed using CrunchFlow to simulate reactive transport and porosity and permeability changes of sandstone and carbonate rock samples taken from the Lower Tuscaloosa Formation and the Selma Chalk Formation, Jackson County, MS, USA. The model predicted a permeability decrease from 2190 mD to 2038 mD for the Lower Tuscaloosa Sandstone sample in a static batch reactor after 180 days of exposure to CO 2 ‐saturated brine, which is consistent with measured permeability results. The model predicted a negligible permeability change from 2.00 mD to 2.08 mD for the Selma Chalk carbonate sample after 180 days of exposure to CO 2 ‐saturated brine. Based on model prediction, key mineral dissolution and precipitation reactions in the Lower Tuscaloosa Sandstone sample include dissolution of quartz, chlorite, and feldspar, as well as precipitation of amorphous silica and kaolinite. For the Selma Chalk carbonate sample, key predicted reactions include dissolution of calcite, quartz and chlorite, and precipitation of kaolinite and amorphous silica. Initial porosity, initial feldspar content and the exponent n value (related to pore structure and tortuosity) used in permeability calculations were three important factors affecting permeability evolution of sandstone samples under CO 2 sequestration conditions. The small permeabilitymore » change predicted for both the Lower Tuscaloosa Sandstone and the Selma Chalk caprock after exposure to CO 2 ‐saturated brine suggests that poro‐permeability changes during CO 2 injection into the Lower Tuscaloosa Formation are not likely to significantly affect reservoir and seal quality. © 2017 Society of Chemical Industry and John Wiley & Sons, Ltd.« less

Authors:
ORCiD logo [1];  [2];  [2]
  1. State Key Laboratory of Geomechanics and Geotechnical Engineering Institute of Rock and Soil Mechanics (IRSM) Chinese Academy of Sciences Wuhan, China, ORISE, NETL Pittsburgh PA USA
  2. US Department of Energy NETL Pittsburgh PA USA
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1401813
Resource Type:
Publisher's Accepted Manuscript
Journal Name:
Greenhouse Gases: Science and Technology
Additional Journal Information:
Journal Name: Greenhouse Gases: Science and Technology Journal Volume: 7 Journal Issue: 6; Journal ID: ISSN 2152-3878
Publisher:
Wiley Blackwell (John Wiley & Sons)
Country of Publication:
United Kingdom
Language:
English

Citation Formats

Zhang, Liwei, Soong, Yee, and Dilmore, Robert M. Numerical investigation of Lower Tuscaloosa Sandstone and Selma Chalk caprock under geological CO 2 sequestration conditions: mineral precipitation and permeability evolution. United Kingdom: N. p., 2017. Web. doi:10.1002/ghg.1703.
Zhang, Liwei, Soong, Yee, & Dilmore, Robert M. Numerical investigation of Lower Tuscaloosa Sandstone and Selma Chalk caprock under geological CO 2 sequestration conditions: mineral precipitation and permeability evolution. United Kingdom. https://doi.org/10.1002/ghg.1703
Zhang, Liwei, Soong, Yee, and Dilmore, Robert M. Mon . "Numerical investigation of Lower Tuscaloosa Sandstone and Selma Chalk caprock under geological CO 2 sequestration conditions: mineral precipitation and permeability evolution". United Kingdom. https://doi.org/10.1002/ghg.1703.
@article{osti_1401813,
title = {Numerical investigation of Lower Tuscaloosa Sandstone and Selma Chalk caprock under geological CO 2 sequestration conditions: mineral precipitation and permeability evolution},
author = {Zhang, Liwei and Soong, Yee and Dilmore, Robert M.},
abstractNote = {Abstract A numerical model was developed using CrunchFlow to simulate reactive transport and porosity and permeability changes of sandstone and carbonate rock samples taken from the Lower Tuscaloosa Formation and the Selma Chalk Formation, Jackson County, MS, USA. The model predicted a permeability decrease from 2190 mD to 2038 mD for the Lower Tuscaloosa Sandstone sample in a static batch reactor after 180 days of exposure to CO 2 ‐saturated brine, which is consistent with measured permeability results. The model predicted a negligible permeability change from 2.00 mD to 2.08 mD for the Selma Chalk carbonate sample after 180 days of exposure to CO 2 ‐saturated brine. Based on model prediction, key mineral dissolution and precipitation reactions in the Lower Tuscaloosa Sandstone sample include dissolution of quartz, chlorite, and feldspar, as well as precipitation of amorphous silica and kaolinite. For the Selma Chalk carbonate sample, key predicted reactions include dissolution of calcite, quartz and chlorite, and precipitation of kaolinite and amorphous silica. Initial porosity, initial feldspar content and the exponent n value (related to pore structure and tortuosity) used in permeability calculations were three important factors affecting permeability evolution of sandstone samples under CO 2 sequestration conditions. The small permeability change predicted for both the Lower Tuscaloosa Sandstone and the Selma Chalk caprock after exposure to CO 2 ‐saturated brine suggests that poro‐permeability changes during CO 2 injection into the Lower Tuscaloosa Formation are not likely to significantly affect reservoir and seal quality. © 2017 Society of Chemical Industry and John Wiley & Sons, Ltd.},
doi = {10.1002/ghg.1703},
journal = {Greenhouse Gases: Science and Technology},
number = 6,
volume = 7,
place = {United Kingdom},
year = {Mon Jul 24 00:00:00 EDT 2017},
month = {Mon Jul 24 00:00:00 EDT 2017}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1002/ghg.1703

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Cited by: 8 works
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