Estimation and modeling of coal pore accessibility using small angle neutron scattering
Abstract
Gas diffusion in coal is controlled by nano-structure of the pores. The interconnectivity of pores not only determines the dynamics of gas transport in the coal matrix but also influences the mechanical strength. In this study, small angle neutron scattering (SANS) was employed to quantify pore accessibility for two coal samples, one of sub-bituminous rank and the other of anthracite rank. Moreover, a theoretical pore accessibility model was proposed based on scattering intensities under both vacuum and zero average contrast (ZAC) conditions. Our results show that scattering intensity decreases with increasing gas pressure using deuterated methane (CD4) at low Q values for both coals. Pores smaller than 40 nm in radius are less accessible for anthracite than sub-bituminous coal. On the contrary, when the pore radius is larger than 40 nm, the pore accessibility of anthracite becomes larger than that of sub-bituminous coal. Only 20% of pores are accessible to CD4 for anthracite and 37% for sub-bituminous coal, where the pore radius is 16 nm. For these two coals, pore accessibility and pore radius follows a power-law relationship.
- Authors:
-
- Pennsylvania State Univ., University Park, PA (United States)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Publication Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). High Flux Isotope Reactor (HFIR)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1265817
- Alternate Identifier(s):
- OSTI ID: 1247723
- Grant/Contract Number:
- AC05-00OR22725
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Fuel
- Additional Journal Information:
- Journal Volume: 161; Journal Issue: C; Journal ID: ISSN 0016-2361
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; 01 COAL, LIGNITE, AND PEAT; pore accessibility; SANS; coal pore characterization; accessibility modeling
Citation Formats
Zhang, Rui, Liu, Shimin, Bahadur, Jitendra, Elsworth, Derek, Melnichenko, Yuri, He, Lilin, and Wang, Yi. Estimation and modeling of coal pore accessibility using small angle neutron scattering. United States: N. p., 2015.
Web. doi:10.1016/j.fuel.2015.08.067.
Zhang, Rui, Liu, Shimin, Bahadur, Jitendra, Elsworth, Derek, Melnichenko, Yuri, He, Lilin, & Wang, Yi. Estimation and modeling of coal pore accessibility using small angle neutron scattering. United States. https://doi.org/10.1016/j.fuel.2015.08.067
Zhang, Rui, Liu, Shimin, Bahadur, Jitendra, Elsworth, Derek, Melnichenko, Yuri, He, Lilin, and Wang, Yi. Fri .
"Estimation and modeling of coal pore accessibility using small angle neutron scattering". United States. https://doi.org/10.1016/j.fuel.2015.08.067. https://www.osti.gov/servlets/purl/1265817.
@article{osti_1265817,
title = {Estimation and modeling of coal pore accessibility using small angle neutron scattering},
author = {Zhang, Rui and Liu, Shimin and Bahadur, Jitendra and Elsworth, Derek and Melnichenko, Yuri and He, Lilin and Wang, Yi},
abstractNote = {Gas diffusion in coal is controlled by nano-structure of the pores. The interconnectivity of pores not only determines the dynamics of gas transport in the coal matrix but also influences the mechanical strength. In this study, small angle neutron scattering (SANS) was employed to quantify pore accessibility for two coal samples, one of sub-bituminous rank and the other of anthracite rank. Moreover, a theoretical pore accessibility model was proposed based on scattering intensities under both vacuum and zero average contrast (ZAC) conditions. Our results show that scattering intensity decreases with increasing gas pressure using deuterated methane (CD4) at low Q values for both coals. Pores smaller than 40 nm in radius are less accessible for anthracite than sub-bituminous coal. On the contrary, when the pore radius is larger than 40 nm, the pore accessibility of anthracite becomes larger than that of sub-bituminous coal. Only 20% of pores are accessible to CD4 for anthracite and 37% for sub-bituminous coal, where the pore radius is 16 nm. For these two coals, pore accessibility and pore radius follows a power-law relationship.},
doi = {10.1016/j.fuel.2015.08.067},
journal = {Fuel},
number = C,
volume = 161,
place = {United States},
year = {Fri Sep 04 00:00:00 EDT 2015},
month = {Fri Sep 04 00:00:00 EDT 2015}
}
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Works referenced in this record:
Laboratory measurement and modeling of coal permeability with continued methane production: Part 2 – Modeling results
journal, April 2012
- Liu, Shimin; Harpalani, Satya; Pillalamarry, Mallikarjun
- Fuel, Vol. 94
A new theoretical approach to model sorption-induced coal shrinkage or swelling
journal, July 2013
- Liu, Shimin; Harpalani, Satya
- AAPG Bulletin, Vol. 97, Issue 7
Pore Structure of the Argonne Premium Coals
journal, March 1995
- Larsen, John W.; Hall, Peter; Wernett, Patrick C.
- Energy & Fuels, Vol. 9, Issue 2
Manual of Symbols and Terminology for Physicochemical Quantities and Units, Appendix II: Definitions, Terminology and Symbols in Colloid and Surface Chemistry
journal, January 1972
- Everett, D. H.
- Pure and Applied Chemistry, Vol. 31, Issue 4
Nature of the porosity in American coals
journal, October 1972
- Gan, H.; Nandi, S. P.; Walker, P. L.
- Fuel, Vol. 51, Issue 4
The effect of pore structure and gas pressure upon the transport properties of coal: a laboratory and modeling study. 1. Isotherms and pore volume distributions
journal, September 1999
- Clarkson, C. R.; Bustin, R. M.
- Fuel, Vol. 78, Issue 11
Coal microstructure and micropermeability and their effects on natural gas recovery
journal, January 1993
- Gamson, Paul D.; Beamish, B. Basil; Johnson, David P.
- Fuel, Vol. 72, Issue 1
Accessibility of pores in coal to methane and carbon dioxide
journal, January 2012
- Melnichenko, Yuri B.; He, Lilin; Sakurovs, Richard
- Fuel, Vol. 91, Issue 1
Methods for Characterization of Inorganic and Mineral Matter in Coal: A Critical Overview
journal, March 2003
- Vassilev, Stanislav V.; Tascón, Juan M. D.
- Energy & Fuels, Vol. 17, Issue 2
Swelling-induced volumetric strains internal to a stressed coal associated with CO2 sorption
journal, November 2007
- Karacan, C. Özgen
- International Journal of Coal Geology, Vol. 72, Issue 3-4
Pore Accessibility by Methane and Carbon Dioxide in Coal as Determined by Neutron Scattering
journal, February 2012
- He, Lilin; Melnichenko, Yuri B.; Mastalerz, Maria
- Energy & Fuels, Vol. 26, Issue 3
Pore size distribution and accessible pore size distribution in bituminous coals
journal, October 2012
- Sakurovs, Richard; He, Lilin; Melnichenko, Yuri B.
- International Journal of Coal Geology, Vol. 100
Characterization of tight gas reservoir pore structure using USANS/SANS and gas adsorption analysis
journal, May 2012
- Clarkson, C. R.; Freeman, M.; He, L.
- Fuel, Vol. 95
Porosity of Coal and Shale: Insights from Gas Adsorption and SANS/USANS Techniques
journal, July 2012
- Mastalerz, Maria; He, Lilin; Melnichenko, Yuri B.
- Energy & Fuels, Vol. 26, Issue 8
Characterization of accessible and inaccessible pores in microporous carbons by a combination of adsorption and small angle neutron scattering
journal, July 2012
- Nguyen, Thanh X.; Bhatia, Suresh K.
- Carbon, Vol. 50, Issue 8
Pore structure characterization of North American shale gas reservoirs using USANS/SANS, gas adsorption, and mercury intrusion
journal, January 2013
- Clarkson, C. R.; Solano, N.; Bustin, R. M.
- Fuel, Vol. 103
A USANS/SANS Study of the Accessibility of Pores in the Barnett Shale to Methane and Water
journal, February 2013
- Ruppert, Leslie F.; Sakurovs, Richard; Blach, Tomasz P.
- Energy & Fuels, Vol. 27, Issue 2
Hierarchical Pore Morphology of Cretaceous Shale: A Small-Angle Neutron Scattering and Ultrasmall-Angle Neutron Scattering Study
journal, September 2014
- Bahadur, J.; Melnichenko, Y. B.; Mastalerz, Maria
- Energy & Fuels, Vol. 28, Issue 10
Small-Angle Neutron Scattering and the Microstructure of Rocks
journal, January 2006
- Radlinski, A. P.
- Reviews in Mineralogy and Geochemistry, Vol. 63, Issue 1
Application of SAXS and SANS in evaluation of porosity, pore size distribution and surface area of coal
journal, August 2004
- Radlinski, A. P.; Mastalerz, M.; Hinde, A. L.
- International Journal of Coal Geology, Vol. 59, Issue 3-4
Application of small-angle neutron scattering (SANS) to the study of coal porosity
journal, September 1983
- Tricker, M. J.; Grint, Alan; Audley, G. J.
- Fuel, Vol. 62, Issue 9
Development of the meso- and macroporous structure of coals with rank as analysed with small angle neutron scattering and adsorption experiments
journal, March 2004
- Prinz, D.; Pyckhout-Hintzen, W.; Littke, R.
- Fuel, Vol. 83, Issue 4-5
Wettability Evaluation of a CO 2 /Water/Bentheimer Sandstone System: Contact Angle, Dissolution, and Bubble Size
journal, May 2014
- Kaveh, N. Shojai; Rudolph, E. S. J.; van Hemert, P.
- Energy & Fuels, Vol. 28, Issue 6
Capillary Pressure and Wettability Behavior of CO2 Sequestration in Coal at Elevated Pressures
journal, December 2008
- Plug, Willem-Jan; Mazumder, Saikat; Bruining, Johannes
- SPE Journal, Vol. 13, Issue 04
Reduction and analysis of SANS and USANS data using IGOR Pro
journal, November 2006
- Kline, Steven R.
- Journal of Applied Crystallography, Vol. 39, Issue 6, p. 895-900
Scattering by an Inhomogeneous Solid
journal, June 1949
- Debye, P.; Bueche, A. M.
- Journal of Applied Physics, Vol. 20, Issue 6
The determination of the void structure of microporous coals by small‐angle neutron scattering: Void geometry and structure in Illinois No. 6 bituminous coal
journal, February 1986
- Gethner, Jon S.
- Journal of Applied Physics, Vol. 59, Issue 4
Small-Angle X-Ray-Scattering Investigation of Submicroscopic Porosity with Fractal Properties
journal, August 1984
- Bale, Harold D.; Schmidt, Paul W.
- Physical Review Letters, Vol. 53, Issue 6
Small angle neutron scattering signature of oil generation in artificially and naturally matured hydrocarbon source rocks
journal, January 2000
- Radliński, A. P.; Boreham, C. J.; Lindner, P.
- Organic Geochemistry, Vol. 31, Issue 1
The 40 m general purpose small-angle neutron scattering instrument at Oak Ridge National Laboratory
journal, August 2012
- Wignall, George D.; Littrell, Kenneth C.; Heller, William T.
- Journal of Applied Crystallography, Vol. 45, Issue 5
Absolute calibration of small-angle neutron scattering data
journal, February 1987
- Wignall, G. D.; Bates, F. S.
- Journal of Applied Crystallography, Vol. 20, Issue 1
The pore structure of the Argonne coals as interpreted from contrast matching small angle neutron scattering
journal, September 2000
- Hall, P. J.; Brown, S. D.; Calo, J. M.
- Fuel, Vol. 79, Issue 11
Study of structural change in Wyodak coal in high-pressure CO2 by small angle neutron scattering
journal, June 2010
- Mirzaeian, Mojtaba; Hall, Peter J.; Jirandehi, Hasan Fathinejad
- Journal of Materials Science, Vol. 45, Issue 19
Adsorption of methane, nitrogen, carbon dioxide and their mixtures on wet Tiffany coal
journal, December 2005
- Fitzgerald, J. E.; Pan, Z.; Sudibandriyo, M.
- Fuel, Vol. 84, Issue 18
Methane/CO 2 Sorption Modeling for Coalbed Methane Production and CO 2 Sequestration
journal, July 2006
- Harpalani, Satya; Prusty, Basanta K.; Dutta, Pratik
- Energy & Fuels, Vol. 20, Issue 4
Gas diffusion behavior of coal and its impact on production from coalbed methane reservoirs
journal, June 2011
- Pillalamarry, Mallikarjun; Harpalani, Satya; Liu, Shimin
- International Journal of Coal Geology, Vol. 86, Issue 4
Water vapour adsorption in highly porous carbons as seen by small and wide angle X-ray scattering
journal, April 2010
- László, Krisztina; Czakkel, Orsolya; Dobos, Gábor
- Carbon, Vol. 48, Issue 4
Small-Angle and Ultrasmall-Angle Neutron Scattering (SANS/USANS) Study of New Albany Shale: A Treatise on Microporosity
journal, January 2015
- Bahadur, Jitendra; Radlinski, Andrzej P.; Melnichenko, Yuri B.
- Energy & Fuels, Vol. 29, Issue 2
Compressibility of sorptive porous media: Part 1. Background and theory
journal, September 2014
- Liu, Shimin; Harpalani, Satya
- AAPG Bulletin, Vol. 98, Issue 9
Compressibility of sorptive porous media: Part 2. Experimental study on coal
journal, September 2014
- Liu, Shimin; Harpalani, Satya
- AAPG Bulletin, Vol. 98, Issue 9
Determination of the Effective Stress Law for Deformation in Coalbed Methane Reservoirs
journal, October 2013
- Liu, Shimin; Harpalani, Satya
- Rock Mechanics and Rock Engineering, Vol. 47, Issue 5
Evaluation of in situ stress changes with gas depletion of coalbed methane reservoirs
journal, August 2014
- Liu, Shimin; Harpalani, Satya
- Journal of Geophysical Research: Solid Earth, Vol. 119, Issue 8
Pore Structure Characterization of Coal by Synchrotron Small-Angle X-ray Scattering and Transmission Electron Microscopy
journal, May 2014
- Zhao, Yixin; Liu, Shimin; Elsworth, Derek
- Energy & Fuels, Vol. 28, Issue 6
Failure mechanisms in coal: Dependence on strain rate and microstructure: FAILURE MECHANISMS IN COAL
journal, September 2014
- Zhao, Yixin; Liu, Shimin; Zhao, Gao-Feng
- Journal of Geophysical Research: Solid Earth, Vol. 119, Issue 9
Works referencing / citing this record:
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journal, November 2017
- Zhao, Jianhua; Jin, Zhijun; Hu, Qinhong
- Scientific Reports, Vol. 7, Issue 1
Quantitative Characterization of Pore Connectivity and Movable Fluid Distribution of Tight Sandstones: A Case Study of the Upper Triassic Chang 7 Member, Yanchang Formation in Ordos Basin, China
journal, January 2020
- Wang, Boli; Zhao, Xisen; Zhou, Wen
- Geofluids, Vol. 2020
Changes in pore structure of coal caused by coal-to-gas bioconversion
journal, June 2017
- Zhang, Rui; Liu, Shimin; Bahadur, Jitendra
- Scientific Reports, Vol. 7, Issue 1
Changes in pore structure of coal caused by coal-to-gas bioconversion
journal, June 2017
- Zhang, Rui; Liu, Shimin; Bahadur, Jitendra
- Scientific Reports, Vol. 7, Issue 1
Fractal evolution under in situ pressure and sorption conditions for coal and shale
journal, August 2017
- Zhang, Rui; Liu, Shimin; Wang, Yang
- Scientific Reports, Vol. 7, Issue 1
Integrating SANS and fluid-invasion methods to characterize pore structure of typical American shale oil reservoirs
journal, November 2017
- Zhao, Jianhua; Jin, Zhijun; Hu, Qinhong
- Scientific Reports, Vol. 7, Issue 1