Hierarchical Pore Morphology of Cretaceous Shale: A Small-Angle Neutron Scattering and Ultrasmall-Angle Neutron Scattering Study
Abstract
Shale reservoirs are becoming an increasingly important source of oil and natural gas supply and a potential candidate for CO2 sequestration. Understanding the pore morphology in shale may provide clues to making gas extraction more efficient and cost-effective. The porosity of Cretaceous shale samples from Alberta, Canada, collected from different depths with varying mineralogical compositions, has been investigated by small- and ultrasmall-angle neutron scattering. Moreover these samples come from the Second White Specks and Belle Fourche formations, and their organic matter content ranges between 2 and 3%. The scattering length density of the shale specimens has been estimated using the chemical composition of the different mineral components. Scattering experiments reveal the presence of fractal and non-fractal pores. It has been shown that the porosity and specific surface area are dominated by the contribution from meso- and micropores. The fraction of closed porosity has been calculated by comparing the porosities estimated by He pycnometry and scattering techniques. There is no correlation between total porosity and mineral components, a strong correlation has been observed between closed porosity and major mineral components in the studied specimens.
- Authors:
-
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Indiana Univ., Bloomington, IN (United States)
- Univ. of Calgary, AB (Canada)
- 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:
- 1185621
- Grant/Contract Number:
- AC05-00OR22725; DMR-0454672
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Energy and Fuels
- Additional Journal Information:
- Journal Volume: 28; Journal Issue: 10; Journal ID: ISSN 0887-0624
- Publisher:
- American Chemical Society (ACS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 58 GEOSCIENCES
Citation Formats
Bahadur, J., Melnichenko, Y. B., Mastalerz, Maria, Furmann, Agnieszka, and Clarkson, Chris R. Hierarchical Pore Morphology of Cretaceous Shale: A Small-Angle Neutron Scattering and Ultrasmall-Angle Neutron Scattering Study. United States: N. p., 2014.
Web. doi:10.1021/ef501832k.
Bahadur, J., Melnichenko, Y. B., Mastalerz, Maria, Furmann, Agnieszka, & Clarkson, Chris R. Hierarchical Pore Morphology of Cretaceous Shale: A Small-Angle Neutron Scattering and Ultrasmall-Angle Neutron Scattering Study. United States. https://doi.org/10.1021/ef501832k
Bahadur, J., Melnichenko, Y. B., Mastalerz, Maria, Furmann, Agnieszka, and Clarkson, Chris R. Thu .
"Hierarchical Pore Morphology of Cretaceous Shale: A Small-Angle Neutron Scattering and Ultrasmall-Angle Neutron Scattering Study". United States. https://doi.org/10.1021/ef501832k. https://www.osti.gov/servlets/purl/1185621.
@article{osti_1185621,
title = {Hierarchical Pore Morphology of Cretaceous Shale: A Small-Angle Neutron Scattering and Ultrasmall-Angle Neutron Scattering Study},
author = {Bahadur, J. and Melnichenko, Y. B. and Mastalerz, Maria and Furmann, Agnieszka and Clarkson, Chris R.},
abstractNote = {Shale reservoirs are becoming an increasingly important source of oil and natural gas supply and a potential candidate for CO2 sequestration. Understanding the pore morphology in shale may provide clues to making gas extraction more efficient and cost-effective. The porosity of Cretaceous shale samples from Alberta, Canada, collected from different depths with varying mineralogical compositions, has been investigated by small- and ultrasmall-angle neutron scattering. Moreover these samples come from the Second White Specks and Belle Fourche formations, and their organic matter content ranges between 2 and 3%. The scattering length density of the shale specimens has been estimated using the chemical composition of the different mineral components. Scattering experiments reveal the presence of fractal and non-fractal pores. It has been shown that the porosity and specific surface area are dominated by the contribution from meso- and micropores. The fraction of closed porosity has been calculated by comparing the porosities estimated by He pycnometry and scattering techniques. There is no correlation between total porosity and mineral components, a strong correlation has been observed between closed porosity and major mineral components in the studied specimens.},
doi = {10.1021/ef501832k},
journal = {Energy and Fuels},
number = 10,
volume = 28,
place = {United States},
year = {Thu Sep 25 00:00:00 EDT 2014},
month = {Thu Sep 25 00:00:00 EDT 2014}
}
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Works referencing / citing this record:
Integrating SANS and fluid-invasion methods to characterize pore structure of typical American shale oil reservoirs
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Integrating SANS and fluid-invasion methods to characterize pore structure of typical American shale oil reservoirs
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