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Title: Heterogeneity-assisted carbon dioxide storage in marine sediments

Journal Article · · Applied Energy
ORCiD logo [1];  [2];  [3];  [4];  [5];  [6];  [7];  [8];  [9];  [10];  [11];  [12];  [12]; ORCiD logo [4];  [13];  [11]
  1. Jilin Univ., Changchun (China). College of Construction Engineering; Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. Univ. of Wyoming, Laramie, WY (United States). Dept. of Geology and Geophysics
  3. The Ohio State Univ., Columbus, OH (United States). Dept. of Civil, Environmental, and Geodetic Engineering. John Glenn College of Public Affairs
  4. The Ohio State Univ., Columbus, OH (United States). School of Earth Sciences
  5. Univ. of Wyoming, Laramie, WY (United States). Dept. of Geology and Geophysics; Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Energy & Transportation Science Division
  6. Edwards Aquifer Authority, San Antonio, TX (United States)
  7. Univ. of Texas, Austin, TX (United States). Bureau of Economic Geology; Nanchang Univ. (China). School of Resources, Environmental and Chemical Engineering
  8. New Mexico Inst. of Mining and Technology (New Mexico Tech), Socorro, NM (United States). Petroleum Recovery Research Center
  9. Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Univ. of Utah, Salt Lake City, UT (United States). Energy and Geoscience Inst.
  10. Univ. of Utah, Salt Lake City, UT (United States). Energy and Geoscience Inst.
  11. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  12. Jilin Univ., Changchun (China). College of Construction Engineering
  13. Univ. of Cincinnati, OH (United States). Dept. of Geology

Global climate change is a pressing problem caused by the accumulation of anthropogenic greenhouse gas emissions in the atmosphere. Carbon dioxide (CO2) capture and storage is a promising component of a portfolio of options to stabilize atmospheric CO2 concentrations. Meaningful capture and storage requires the permanent isolation of enormous amounts of CO2 away from the atmosphere. In this paper, we investigate the effectiveness of heterogeneity-induced trapping mechanism, in potential synergy with a self-sealing gravitational trapping mechanism, for secure CO2 storage in marine sediments. We conduct the first comprehensive study on heterogeneous marine sediments with various thicknesses at various ocean depths. Prior studies of gravitational trapping have assumed homogeneous (deep-sea) sediments, but numerous studies suggest reservoir heterogeneity may enhance CO2 trapping. Heterogeneity can deter the upward migration of CO2 and prevent leakage through the seafloor into the seawater. Using geostatistically-based Monte Carlo simulations of CO2 transport in heterogeneous sediment, we show that strong spatial variability in permeability is a dominant physical mechanism for secure CO2 storage in marine sediments below 1.2 km water depth (less than half of the depth needed for the gravitational trapping). We identify thresholds for sediment thickness, mean permeability and porosity, and their relationships to meaningful injection rates. Our results for the U.S. Gulf of Mexico suggest that heterogeneity-assisted trapping has a greater areal extent with more than three times the CO2 storage capacity for secure offshore CO2 storage than with gravitational trapping. Finally, these characteristics offer CO2 storage opportunities that are closer to coasts, more accessible, and likely to be less costly.

Research Organization:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States); The Ohio State Univ., Columbus, OH (United States); Univ. of Cincinnati, OH (United States); Jilin Univ., Changchun (China)
Sponsoring Organization:
USDOE; National Science Foundation (NSF); US-China Advanced Coal Technology Consortium; National Natural Science Foundation of China (NSFC)
Grant/Contract Number:
AC52-06NA25396; 41772253; 1230691
OSTI ID:
1459831
Report Number(s):
LA-UR-16-27783
Journal Information:
Applied Energy, Vol. 225; ISSN 0306-2619
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 68 works
Citation information provided by
Web of Science

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Cited By (4)

Convective Dissolution of Carbon Dioxide in Deep Saline Aquifers: Insights from Engineering a High-Pressure Porous Visual Cell journal September 2019
Assessment of CO2 Injectivity During Sequestration in Depleted Gas Reservoirs journal May 2019
Predicting CO 2 Plume Migration in Heterogeneous Formations Using Conditional Deep Convolutional Generative Adversarial Network journal July 2019
Convective dissolution of carbon dioxide in deep saline aquifers: Insights from engineering a high-pressure porous Hele-Shaw cell text January 2018

Figures / Tables (7)