Investigation of Accessible Pore Structure Evolution under Pressurization and Adsorption for Coal and Shale Using Small-Angle Neutron Scattering
Abstract
Pore structure is an important parameter to quantify the reservoir rock adsorption capability and diffusivity, both of which are fundamental reservoir properties to evaluate the gas production and carbon sequestration potential for coalbed methane (CBM) and shale gas reservoirs. In this study, we applied small-angle neutron scattering (SANS) to characterize the total and accessible pore structures for two coal and two shale samples. We carried out in situ SANS measurements to probe the accessible pore structure differences under argon, deuterated methane (CD4), and CO2 penetrations. The results show that the total porosity ranges between 0.25 and 5.8% for the four samples. Less than 50% of the total pores are accessible to CD4 for the two coals, while more than 75% of the pores were found to be accessible for the two shales. This result suggests that organic matter pores tend to be disconnected compared to mineral matter pores. Argon pressurization can induce pore contraction because of the mechanical compression of the solid skeleton in both the coal and shale samples. Hydrostatic compression has a higher effect on the nanopores of coal and shale with a higher accessible porosity. Both methane and CO2 injection can reduce the accessible nanopore volume duemore »
- Authors:
-
- The Pennsylvania State Univ., University Park, PA (United States)
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Publication Date:
- Research Org.:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1492868
- Report Number(s):
- SAND-2019-0638J
Journal ID: ISSN 0887-0624; 671702
- Grant/Contract Number:
- AC04-94AL85000
- Resource Type:
- Journal Article: Accepted Manuscript
- Journal Name:
- Energy and Fuels
- Additional Journal Information:
- Journal Volume: 33; Journal Issue: 2; Journal ID: ISSN 0887-0624
- Publisher:
- American Chemical Society (ACS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 01 COAL, LIGNITE, AND PEAT
Citation Formats
Liu, Shimin, Zhang, Rui, Karpyn, Zuleima, Yoon, Hongkyu, and Dewers, Thomas. Investigation of Accessible Pore Structure Evolution under Pressurization and Adsorption for Coal and Shale Using Small-Angle Neutron Scattering. United States: N. p., 2019.
Web. doi:10.1021/acs.energyfuels.8b03672.
Liu, Shimin, Zhang, Rui, Karpyn, Zuleima, Yoon, Hongkyu, & Dewers, Thomas. Investigation of Accessible Pore Structure Evolution under Pressurization and Adsorption for Coal and Shale Using Small-Angle Neutron Scattering. United States. https://doi.org/10.1021/acs.energyfuels.8b03672
Liu, Shimin, Zhang, Rui, Karpyn, Zuleima, Yoon, Hongkyu, and Dewers, Thomas. 2019.
"Investigation of Accessible Pore Structure Evolution under Pressurization and Adsorption for Coal and Shale Using Small-Angle Neutron Scattering". United States. https://doi.org/10.1021/acs.energyfuels.8b03672. https://www.osti.gov/servlets/purl/1492868.
@article{osti_1492868,
title = {Investigation of Accessible Pore Structure Evolution under Pressurization and Adsorption for Coal and Shale Using Small-Angle Neutron Scattering},
author = {Liu, Shimin and Zhang, Rui and Karpyn, Zuleima and Yoon, Hongkyu and Dewers, Thomas},
abstractNote = {Pore structure is an important parameter to quantify the reservoir rock adsorption capability and diffusivity, both of which are fundamental reservoir properties to evaluate the gas production and carbon sequestration potential for coalbed methane (CBM) and shale gas reservoirs. In this study, we applied small-angle neutron scattering (SANS) to characterize the total and accessible pore structures for two coal and two shale samples. We carried out in situ SANS measurements to probe the accessible pore structure differences under argon, deuterated methane (CD4), and CO2 penetrations. The results show that the total porosity ranges between 0.25 and 5.8% for the four samples. Less than 50% of the total pores are accessible to CD4 for the two coals, while more than 75% of the pores were found to be accessible for the two shales. This result suggests that organic matter pores tend to be disconnected compared to mineral matter pores. Argon pressurization can induce pore contraction because of the mechanical compression of the solid skeleton in both the coal and shale samples. Hydrostatic compression has a higher effect on the nanopores of coal and shale with a higher accessible porosity. Both methane and CO2 injection can reduce the accessible nanopore volume due to a combination of mechanical compression, sorption-induced matrix swelling, and adsorbed molecule occupation. CO2 has higher effects on sorption-induced matrix swelling and pore filling compared to methane for both the coal and shale samples. Gas densification and pore filling could occur at higher pressures and smaller pore sizes. In conclusion, the compression and adsorption could create nanopores in the San Juan coal and Marcellus shale drilled core but could have an opposite effect in the other samples, namely, the processes could damage the nanopores in the Hazleton coal and Marcellus shale outcrop.},
doi = {10.1021/acs.energyfuels.8b03672},
url = {https://www.osti.gov/biblio/1492868},
journal = {Energy and Fuels},
issn = {0887-0624},
number = 2,
volume = 33,
place = {United States},
year = {Mon Jan 07 00:00:00 EST 2019},
month = {Mon Jan 07 00:00:00 EST 2019}
}
Web of Science
Figures / Tables:
Works referenced in this record:
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
3D mapping of carbon dioxide-induced strain in coal using digital volumetric speckle photography technique and X-ray computer tomography
journal, August 2015
- Mao, Lingtao; Hao, Nai; An, Liqian
- International Journal of Coal Geology, Vol. 147-148
Heterogeneous Sorption and Swelling in a Confined and Stressed Coal during CO 2 Injection
journal, October 2003
- Karacan, C. Özgen
- Energy & Fuels, Vol. 17, Issue 6
Quantitative Evaluation for Relationship between Development of Pore Structure and Swelling of Coal in Carbonization of Single Coal Particle
journal, January 2013
- Toishi, Ayuko; Yamazaki, Yoshiaki; Uchida, Ataru
- ISIJ International, Vol. 53, Issue 10
Study on microstructural changes of coal after methane adsorption
journal, March 2016
- Feng, Zengchao; Zhou, Dong; Zhao, Yangsheng
- Journal of Natural Gas Science and Engineering, Vol. 30
Adsorption-Induced Deformation of Microporous Materials: Coal Swelling Induced by CO 2 –CH 4 Competitive Adsorption
journal, January 2012
- Brochard, Laurent; Vandamme, Matthieu; Pellenq, Roland J. -M.
- Langmuir, Vol. 28, Issue 5
Evaluation of gas sorption-induced internal swelling in coal
journal, March 2015
- Zang, Jie; Wang, Kai; Zhao, Yixin
- Fuel, Vol. 143
Swelling of moist coal in carbon dioxide and methane
journal, May 2011
- Day, Stuart; Fry, Robyn; Sakurovs, Richard
- International Journal of Coal Geology, Vol. 86, Issue 2-3
Kinetics of coal swelling in gases: Influence of gas pressure, gas type and coal type
journal, October 2014
- Staib, G.; Sakurovs, R.; Gray, E. MacA
- International Journal of Coal Geology, Vol. 132
Moisture-Induced Swelling of Coal
journal, December 2009
- Fry, Robyn; Day, Stuart; Sakurovs, Richard
- International Journal of Coal Preparation and Utilization, Vol. 29, Issue 6
Anisotropy characteristics of coal shrinkage/swelling and its impact on coal permeability evolution with CO 2 injection: Modeling and Analysis: Anisotropy characteristics of coal shrinkage/swelling
journal, October 2016
- Liu, Shimin; Wang, Yi; Harpalani, Satya
- Greenhouse Gases: Science and Technology, Vol. 6, Issue 5
Swelling and sorption experiments on methane, nitrogen and carbon dioxide on dry Selar Cornish coal
journal, October 2010
- Battistutta, Elisa; van Hemert, Patrick; Lutynski, Marcin
- International Journal of Coal Geology, Vol. 84, Issue 1
Effects of CO 2 adsorption on coal deformation during geological sequestration
journal, January 2011
- Yang, Kan; Lu, Xiancai; Lin, Yangzheng
- Journal of Geophysical Research, Vol. 116, Issue B8
Deformation of Coal Induced by Methane Adsorption at Geological Conditions
journal, November 2010
- Yang, Kan; Lu, Xiancai; Lin, Yangzheng
- Energy & Fuels, Vol. 24, Issue 11
Interplay of Montmorillonite–H 2 O–scCO 2 System between Mechanical Behavior and Adsorption: Molecular Dynamics
journal, September 2015
- Zhang, Weina; Hu, Haixiang; Li, Xiaochun
- The Journal of Physical Chemistry C, Vol. 119, Issue 38
Swelling of shale in supercritical carbon dioxide
journal, March 2016
- Lu, Yiyu; Ao, Xiang; Tang, Jiren
- Journal of Natural Gas Science and Engineering, Vol. 30
Experimental study of swelling of organic rich shale in methane
journal, October 2015
- Chen, Tianyu; Feng, Xia-Ting; Pan, Zhejun
- International Journal of Coal Geology, Vol. 150-151
Effect of CO2 sorption-induced anisotropic swelling on caprock sealing efficiency
journal, September 2015
- Wang, J. G.; Ju, Yang; Gao, Feng
- Journal of Cleaner Production, Vol. 103
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
Estimation and modeling of coal pore accessibility using small angle neutron scattering
journal, December 2015
- Zhang, Rui; Liu, Shimin; Bahadur, Jitendra
- Fuel, Vol. 161
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
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
Compressibility of sorptive porous media: Part 2. Experimental study on coal
journal, September 2014
- Liu, Shimin; Harpalani, Satya
- AAPG Bulletin, Vol. 98, Issue 9
Small-Angle Neutron Scattering and the Microstructure of Rocks
journal, January 2006
- Radlinski, A. P.
- Reviews in Mineralogy and Geochemistry, Vol. 63, Issue 1
Quantification of Organic Porosity and Water Accessibility in Marcellus Shale Using Neutron Scattering
journal, May 2016
- Gu, Xin; Mildner, David F. R.; Cole, David R.
- Energy & Fuels, Vol. 30, Issue 6
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
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
Stability of the Bituminous Coal Microstructure upon Exposure to High Pressures of Helium
journal, October 2009
- Sakurovs, Richard; Radliński, Andrzej P.; Melnichenko, Yuri B.
- Energy & Fuels, Vol. 23, Issue 10
Experimental and theoretical characterization of methane and CO2 sorption hysteresis in coals based on Langmuir desorption
journal, February 2017
- Zhang, Rui; Liu, Shimin
- International Journal of Coal Geology, Vol. 171
Experimental study of meso-structural deformation of coal during methane adsorption-desorption cycles
journal, June 2017
- Zhou, Dong; Feng, Zeng-chao; Zhao, Dong
- Journal of Natural Gas Science and Engineering, Vol. 42
Swelling of coal induced by cyclic sorption/desorption of gas: Experimental observations indicating changes in coal structure due to sorption of CO2 and CH4
journal, September 2010
- Majewska, Zofia; Majewski, Stanisław; Ziętek, Jerzy
- International Journal of Coal Geology, Vol. 83, Issue 4
Works referencing / citing this record:
Influence of reservoir properties on the methane adsorption capacity and fractal features of coal and shale in the upper Permian coal measures of the South Sichuan coalfield, China
journal, September 2019
- Bao, Yuan; Ju, Yiwen; Yin, Zhongshan
- Energy Exploration & Exploitation, Vol. 38, Issue 1
Water Vapor Sorption Properties of Illinois Shales Under Dynamic Water Vapor Conditions: Experimentation and Modeling
journal, August 2019
- Sang, Guijie; Liu, Shimin; Elsworth, Derek
- Water Resources Research, Vol. 55, Issue 8