Modification of TOUGH2 for Enhanced Coal Bed Methane Simulations

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Description

The GEO-SEQ Project is investigating methods for geological sequestration of CO{sub 2}. This project, which is directed by LBNL and includes a number of other industrial, university, and National Laboratory partners, is evaluating computer simulation models including TOUGH2. One of the problems to be considered is Enhanced Coal Bed Methane (ECBM) recovery. In this scenario, CO2 is pumped into methane-rich coal beds. Due to adsorption processes, the CO2 is sorbed onto the coal, which displaces the previously sorbed methane (CH4). The released methane can then be recovered, at least partially offsetting the cost of CO2 sequestration. Modifications have been made ... continued below

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22 pages

Creation Information

WEBB, STEPHEN W. January 1, 2003.

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This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 11 times . More information about this report can be viewed below.

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  • Sandia National Laboratories
    Publisher Info: Sandia National Labs., Albuquerque, NM, and Livermore, CA (United States)
    Place of Publication: Albuquerque, New Mexico

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Description

The GEO-SEQ Project is investigating methods for geological sequestration of CO{sub 2}. This project, which is directed by LBNL and includes a number of other industrial, university, and National Laboratory partners, is evaluating computer simulation models including TOUGH2. One of the problems to be considered is Enhanced Coal Bed Methane (ECBM) recovery. In this scenario, CO2 is pumped into methane-rich coal beds. Due to adsorption processes, the CO2 is sorbed onto the coal, which displaces the previously sorbed methane (CH4). The released methane can then be recovered, at least partially offsetting the cost of CO2 sequestration. Modifications have been made to the EOS7R equation of state in TOUGH2 to include the extended Langmuir isotherm for sorbing gases, including the change in porosity associated with the sorbed gas mass. Comparison to hand calculations for pure gas and binary mixtures shows very good agreement. Application to a CO{sub 2} well injection problem given by Law et al. (2002) shows good agreement considering the differences in the equations of state.

Physical Description

22 pages

Source

  • Other Information: PBD: 1 Jan 2003

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  • Report No.: SAND2003-0154
  • Grant Number: AC04-94AL85000
  • DOI: 10.2172/808622 | External Link
  • Office of Scientific & Technical Information Report Number: 808622
  • Archival Resource Key: ark:/67531/metadc739721

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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Creation Date

  • January 1, 2003

Added to The UNT Digital Library

  • Oct. 18, 2015, 6:40 p.m.

Description Last Updated

  • April 12, 2016, 2:34 p.m.

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WEBB, STEPHEN W. Modification of TOUGH2 for Enhanced Coal Bed Methane Simulations, report, January 1, 2003; Albuquerque, New Mexico. (digital.library.unt.edu/ark:/67531/metadc739721/: accessed December 15, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.