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Title: CO 2 Storage by Sorption on Organic Matter and Clay in Gas Shale

Simulations of methane production and supercritical carbon dioxide injection were developed that consider competitive adsorption of CH 4 and CO 2 on both organic matter and montmorillonite. The results were used to assess the potential for storage of CO 2 in a hydraulically fractured shale gas reservoir and for enhanced recovery of CH 4. Assuming equal volume fractions of organic matter and montmorillonite, amounts of CO 2 adsorbed on both materials were comparable, while methane desorption was from clays was two times greater than desorption from organic material. The most successful strategy considered CO 2 injection from a separate well and enhanced methane recovery by 73%, while storing 240 kmt of CO 2.
Authors:
 [1] ;  [1] ;  [1] ;  [1] ;  [1]
  1. Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Publication Date:
OSTI Identifier:
1243231
Report Number(s):
PNNL-SA--107851
Journal ID: ISSN 2213-3976; AA7020000
DOE Contract Number:
AC05-76RL01830
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Unconventional Oil and Gas Resources; Journal Volume: 12
Publisher:
Elsevier
Research Org:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
04 OIL SHALES AND TAR SANDS