Modeling of CO 2 sequestration in coal seams: Role of CO 2 -induced coal softening on injectivity, storage efficiency and caprock deformation: Original Research Article: Modeling of CO 2 sequestration in coal seams
Abstract
Abstract An effective and safe operation for sequestration of CO 2 in coal seams requires a clear understanding of injection‐induced coupled hydromechanical processes such as the evolution of pore pressure, permeability, and induced caprock deformation. In this study, CO 2 injection into coal seams was studied using a coupled flow‐deformation model with a new stress‐dependent porosity and permeability model that considers CO 2 ‐induced coal softening. Based on triaxial compression tests of coal samples extracted from the site of the first series of enhanced coalbed methane field tests in China, a softening phenomenon that a substantial (one‐order‐of‐magnitude) decrease of Young's modulus and an increase of Poisson's ratio with adsorbed CO 2 content was observed. Such softening was considered in the numerical simulation through an exponential relation between elastic properties (Young's modulus and Poisson's ratio) and CO 2 pressure considering that CO 2 content is proportional to the CO 2 pressure. The results of the numerical simulation show that the softening of the coal strongly affects the CO 2 sequestration performance, first by impeding injectivity and stored volume (cumulative injection) during the first week of injection, and thereafter by softening mediated rebound in permeability that tends to increase injectivity and storagemore »
- Authors:
-
- China Univ. of Mining and Technology, Jiangsu (China); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Earth Sciences Division
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Earth Sciences Division
- China Univ. of Mining and Technology, Jiangsu (China)
- Southwest Univ. of Science and Technology, Mianyang (China)
- Publication Date:
- Research Org.:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Org.:
- USDOE Office of Fossil Energy (FE), Clean Coal and Carbon Management
- OSTI Identifier:
- 1379870
- Alternate Identifier(s):
- OSTI ID: 1401751
- Grant/Contract Number:
- AC02-05CH11231; DE‐AC02‐05CH11231
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Greenhouse Gases: Science and Technology
- Additional Journal Information:
- Journal Volume: 7; Journal Issue: 3; Journal ID: ISSN 2152-3878
- Publisher:
- Society of Chemical Industry, Wiley
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 54 ENVIRONMENTAL SCIENCES; CO2 sequestration; coal seams; coal softening; caprock deformations
Citation Formats
Ma, Tianran, Rutqvist, Jonny, Liu, Weiqun, Zhu, Li, and Kim, Kunhwi. Modeling of CO 2 sequestration in coal seams: Role of CO 2 -induced coal softening on injectivity, storage efficiency and caprock deformation: Original Research Article: Modeling of CO 2 sequestration in coal seams. United States: N. p., 2017.
Web. doi:10.1002/ghg.1664.
Ma, Tianran, Rutqvist, Jonny, Liu, Weiqun, Zhu, Li, & Kim, Kunhwi. Modeling of CO 2 sequestration in coal seams: Role of CO 2 -induced coal softening on injectivity, storage efficiency and caprock deformation: Original Research Article: Modeling of CO 2 sequestration in coal seams. United States. https://doi.org/10.1002/ghg.1664
Ma, Tianran, Rutqvist, Jonny, Liu, Weiqun, Zhu, Li, and Kim, Kunhwi. Mon .
"Modeling of CO 2 sequestration in coal seams: Role of CO 2 -induced coal softening on injectivity, storage efficiency and caprock deformation: Original Research Article: Modeling of CO 2 sequestration in coal seams". United States. https://doi.org/10.1002/ghg.1664. https://www.osti.gov/servlets/purl/1379870.
@article{osti_1379870,
title = {Modeling of CO 2 sequestration in coal seams: Role of CO 2 -induced coal softening on injectivity, storage efficiency and caprock deformation: Original Research Article: Modeling of CO 2 sequestration in coal seams},
author = {Ma, Tianran and Rutqvist, Jonny and Liu, Weiqun and Zhu, Li and Kim, Kunhwi},
abstractNote = {Abstract An effective and safe operation for sequestration of CO 2 in coal seams requires a clear understanding of injection‐induced coupled hydromechanical processes such as the evolution of pore pressure, permeability, and induced caprock deformation. In this study, CO 2 injection into coal seams was studied using a coupled flow‐deformation model with a new stress‐dependent porosity and permeability model that considers CO 2 ‐induced coal softening. Based on triaxial compression tests of coal samples extracted from the site of the first series of enhanced coalbed methane field tests in China, a softening phenomenon that a substantial (one‐order‐of‐magnitude) decrease of Young's modulus and an increase of Poisson's ratio with adsorbed CO 2 content was observed. Such softening was considered in the numerical simulation through an exponential relation between elastic properties (Young's modulus and Poisson's ratio) and CO 2 pressure considering that CO 2 content is proportional to the CO 2 pressure. The results of the numerical simulation show that the softening of the coal strongly affects the CO 2 sequestration performance, first by impeding injectivity and stored volume (cumulative injection) during the first week of injection, and thereafter by softening mediated rebound in permeability that tends to increase injectivity and storage over the longer term. A sensitivity study shows that stronger CO 2 ‐induced coal softening and higher CO 2 injection pressure contribute synergistically to increase a significant increase of CO 2 injectivity and adsorption, but also result in larger caprock deformations and uplift. Overall, the study demonstrates the importance of considering the CO 2 ‐induced softening when analyzing the performance and environmental impact of CO 2 ‐sequestration operations in unminable coal seams. © 2017 Society of Chemical Industry and John Wiley & Sons, Ltd.},
doi = {10.1002/ghg.1664},
journal = {Greenhouse Gases: Science and Technology},
number = 3,
volume = 7,
place = {United States},
year = {Mon Jan 30 00:00:00 EST 2017},
month = {Mon Jan 30 00:00:00 EST 2017}
}
Web of Science
Works referenced in this record:
How sorption-induced matrix deformation affects gas flow in coal seams: A new FE model
journal, December 2008
- Zhang, Hongbin; Liu, Jishan; Elsworth, D.
- International Journal of Rock Mechanics and Mining Sciences, Vol. 45, Issue 8
Multiphysics of carbon dioxide sequestration in coalbeds: A review with a focus on geomechanical characteristics of coal
journal, February 2016
- Masoudian, Mohsen S.
- Journal of Rock Mechanics and Geotechnical Engineering, Vol. 8, Issue 1
Current status and technical challenges of CO2 storage in coal seams and enhanced coalbed methane recovery: an overview
journal, March 2014
- Li, Xiaochun; Fang, Zhi-ming
- International Journal of Coal Science & Technology, Vol. 1, Issue 1
A study of caprock hydromechanical changes associated with CO2-injection into a brine formation
journal, March 2002
- Rutqvist, Jonny; Tsang, Chin-Fu
- Environmental Geology, Vol. 42, Issue 2-3
The Behavior of Naturally Fractured Reservoirs
journal, September 1963
- Warren, J. E.; Root, P. J.
- Society of Petroleum Engineers Journal, Vol. 3, Issue 03
Drawdown Induced Changes in Permeability of Coalbeds: A New Interpretation of the Reservoir Response to Primary Recovery
journal, July 2004
- Shi, J. Q.; Durucan, S.
- Transport in Porous Media, Vol. 56, Issue 1
A New Coal-Permeability Model: Internal Swelling Stress and Fracture–Matrix Interaction
journal, July 2009
- Liu, Hui-Hai; Rutqvist, Jonny
- Transport in Porous Media, Vol. 82, Issue 1
Carbon Capture and Storage: How Green Can Black Be?
journal, September 2009
- Haszeldine, R. S.
- Science, Vol. 325, Issue 5948
Thermohydromechanics of partially saturated geological media: governing equations and formulation of four finite element models
journal, January 2001
- Rutqvist, J.; Börgesson, L.; Chijimatsu, M.
- International Journal of Rock Mechanics and Mining Sciences, Vol. 38, Issue 1
A chemo-poro-mechanical model for sequestration of carbon dioxide in coalbeds
journal, March 2013
- Masoudian, M. S.; Airey, D. W.; El-Zein, A.
- Géotechnique, Vol. 63, Issue 3
Permitting issues for CO2 capture, transport and geological storage: A review of Europe, USA, Canada and Australia
journal, April 2007
- Zakkour, Paul; Haines, Mike
- International Journal of Greenhouse Gas Control, Vol. 1, Issue 1
Experimental investigations on the effect of CO2 on mechanics of coal
journal, August 2014
- Masoudian, Mohsen S.; Airey, David W.; El-Zein, Abbas
- International Journal of Coal Geology, Vol. 128-129
The effect of gas sorption on the strength of coal
journal, March 1988
- Ates, Y.; Barron, K.
- Mining Science and Technology, Vol. 6, Issue 3
Worldwide selection of early opportunities for CO2-enhanced oil recovery and CO2-enhanced coal bed methane production
journal, July 2004
- van Bergen, F.; Gale, J.; Damen, K. J.
- Energy, Vol. 29, Issue 9-10
Sequestration of Carbon Dioxide in Coal with Enhanced Coalbed Methane RecoveryA Review †
journal, May 2005
- White, Curt M.; Smith, Duane H.; Jones, Kenneth L.
- Energy & Fuels, Vol. 19, Issue 3
CO2 storage in geological media: Role, means, status and barriers to deployment
journal, April 2008
- Bachu, S.
- Progress in Energy and Combustion Science, Vol. 34, Issue 2
Numerical simulation of carbon dioxide injection for enhanced gas recovery (CO2-EGR) in Altmark natural gas field
journal, June 2013
- Gou, Yang; Hou, Zhengmeng; Liu, Hejuan
- Acta Geotechnica, Vol. 9, Issue 1
Geomechanical issues of anthropogenic CO2 sequestration in exploited gas fields
journal, October 2010
- Ferronato, Massimiliano; Gambolati, Giuseppe; Janna, Carlo
- Energy Conversion and Management, Vol. 51, Issue 10
Modelling permeability for coal reservoirs: A review of analytical models and testing data
journal, March 2012
- Pan, Zhejun; Connell, Luke D.
- International Journal of Coal Geology, Vol. 92
Geological storage of CO2: What do we know, where are the gaps and what more needs to be done?
journal, July 2004
- Gale, John
- Energy, Vol. 29, Issue 9-10
Conceptual economics of full scale enhanced coalbed methane production and CO2 storage in anthracitic coals at South Qinshui basin, Shanxi, China
journal, June 2010
- Wong, S.; Macdonald, D.; Andrei, S.
- International Journal of Coal Geology, Vol. 82, Issue 3-4
Reservoir Engineering in Coal Seams: Part 1-The Physical Process of Gas Storage and Movement in Coal Seams
journal, February 1987
- Gray, Ian
- SPE Reservoir Engineering, Vol. 2, Issue 01
Influence of carbon dioxide on coal permeability determined by pressure transient methods
journal, January 2009
- Siriwardane, Hema; Haljasmaa, Igor; McLendon, Robert
- International Journal of Coal Geology, Vol. 77, Issue 1-2
How Permeability Depends on Stress and Pore Pressure in Coalbeds: A New Model
journal, December 1998
- Palmer, Ian; Mansoori, John
- SPE Reservoir Evaluation & Engineering, Vol. 1, Issue 06
Enhanced coalbed methane and CO2 storage in anthracitic coals—Micro-pilot test at South Qinshui, Shanxi, China
journal, April 2007
- Wong, Sam; Law, David; Deng, Xiaohui
- International Journal of Greenhouse Gas Control, Vol. 1, Issue 2
Investigation of Swelling and Elastic Property Changes Resulting from CO 2 Injection into Cuboid Coal Specimens
journal, May 2012
- Mishra, Brijes; Dlamini, Bongani
- Energy & Fuels, Vol. 26, Issue 6
Model study of the influence of matrix shrinkage on absolute permeability of coal bed reservoirs
journal, January 1996
- Levine, Jeffrey R.
- Geological Society, London, Special Publications, Vol. 109, Issue 1
Applied stress reduces the CO2 sorption capacity of coal
journal, January 2011
- Hol, Sander; Peach, Colin J.; Spiers, Christopher J.
- International Journal of Coal Geology, Vol. 85, Issue 1
Effect of CO 2 injection on heterogeneously permeable coalbed reservoirs
journal, November 2014
- Kumar, Hemant; Elsworth, Derek; Mathews, Jonathan P.
- Fuel, Vol. 135
A review of studies on CO2 sequestration and caprock integrity
journal, October 2010
- Shukla, Richa; Ranjith, Pathegama; Haque, Asadul
- Fuel, Vol. 89, Issue 10
Volumetric strain associated with methane desorption and its impact on coalbed gas production from deep coal seams
journal, September 2005
- Cui, Xiaojun; Bustin, R. Marc
- AAPG Bulletin, Vol. 89, Issue 9
Argonne Coal Structure Rearrangement Caused by Sorption of CO 2
journal, November 2006
- Goodman, A. L.; Favors, R. N.; Larsen, John W.
- Energy & Fuels, Vol. 20, Issue 6
Improving the CO2 well injectivity and enhanced coalbed methane production performance in coal seams
journal, January 2009
- Durucan, Sevket; Shi, Ji-Quan
- International Journal of Coal Geology, Vol. 77, Issue 1-2