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Title: Integrated CO 2 Storage and Brine Extraction

Carbon dioxide (CO 2) capture, utilization, and storage (CCUS) can reduce CO 2 emissions from fossil fuel power plants by injecting CO 2 into deep saline aquifers for storage. CCUS typically increases reservoir pressure which increases costs, because less CO 2 can be injected, and risks such as induced seismicity. Extracting brine with enhanced water recovery (EWR) from the CO 2 storage reservoir can manage and reduce pressure in the formation, decrease the risks linked to reservoir overpressure (e.g., induced seismicity), increase CO 2 storage capacity, and enable CO 2 plume management. We modeled scenarios of CO 2 injection with EWR into the Rock Springs Uplift (RSU) formation in southwest Wyoming. The Finite Element Heat and Mass Transfer Code (FEHM) was used to model CO 2 injection with brine extraction and the corresponding increase in pressure within the RSU. We analyzed the model for pressure management, CO 2 storage, CO 2 saturation, and brine extraction due to the quantity and location of brine extraction wells. The model limited CO 2 injection to a constant pressure increase of two MPa at the injection well with and without extracting brine at hydrostatic pressure. Finally, we found that brine extraction can be usedmore » as a technical and cost-effective pressure management strategy to limit reservoir pressure buildup and increase CO 2 storage associated with a single injection well.« less
Authors:
 [1] ;  [2] ;  [3] ;  [3] ;  [3] ;  [3] ;  [4]
  1. The Ohio State Univ., Columbus, OH (United States). Dept. of Civil Environmental and Geodetic Engineering
  2. The Ohio State Univ., Columbus, OH (United States). Dept. of Civil Environmental and Geodetic Engineering, John Glenn College of Public Affairs
  3. Los Alamos National Lab. (LANL), Los Alamos, NM (United States). Earth and Environmental Sciences
  4. Los Alamos National Lab. (LANL), Los Alamos, NM (United States). Earth and Environmental Sciences; Univ. of New Mexico, Albuquerque, NM (United States). Chemical and Biological Engineering
Publication Date:
Report Number(s):
LA-UR-17-27929
Journal ID: ISSN 1876-6102
Grant/Contract Number:
AC52-06NA25396
Type:
Accepted Manuscript
Journal Name:
Energy Procedia
Additional Journal Information:
Journal Volume: 114; Journal Issue: C; Journal ID: ISSN 1876-6102
Publisher:
Elsevier
Research Org:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; 58 GEOSCIENCES; Earth Sciences
OSTI Identifier:
1398932