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Title: Subsurface injection of combustion power plant effluent as a solid-phase carbon dioxide storage strategy

Journal Article · · Geophysical Research Letters
DOI:https://doi.org/10.1002/2017GL073663· OSTI ID:1473893
ORCiD logo [1];  [1]; ORCiD logo [2]
  1. Univ. of Texas, Austin, TX (United States). Dept. of Geological Sciences, Inst. for Geophysics and Jackson School of Geosciences
  2. Univ. of Texas, Austin, TX (United States). Dept. of Petroleum and Geosystems Engineering

Long-term geological storage of CO2 may be essential for greenhouse gas mitigation, so a number of storage strategies have been developed that utilize a variety of physical processes. Recent work shows that injection of combustion power plant effluent, a mixture of CO2 and N2, into CH4 hydrate-bearing reservoirs blends CO2 storage with simultaneous CH4 production where the CO2 is stored in hydrate, an immobile, solid compound. This strategy creates economic value from the CH4 production, reduces the preinjection complexity since costly CO2 distillation is circumvented, and limits leakage since hydrate is immobile. In this work, we explore the phase behavior of these types of injections and describe the individual roles of H2O, CO2, CH4, and N2 as these components partition into aqueous, vapor, hydrate, and liquid CO2 phases. Our results show that CO2 storage in subpermafrost or submarine hydrate-forming reservoirs requires coinjection of N2 to maintain two-phase flow and limit plugging.

Research Organization:
Univ. of Texas, Austin, TX (United States)
Sponsoring Organization:
USDOE Office of Fossil Energy (FE)
Grant/Contract Number:
FE0010406
OSTI ID:
1473893
Alternate ID(s):
OSTI ID: 1375277
Journal Information:
Geophysical Research Letters, Vol. 44, Issue 11; ISSN 0094-8276
Publisher:
American Geophysical UnionCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 7 works
Citation information provided by
Web of Science

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Cited By (1)

Nitrogen‐Driven Chromatographic Separation During Gas Injection Into Hydrate‐Bearing Sediments journal August 2019