Direct Measure of the Dense Methane Phase in Gas Shale Organic Porosity by Neutron Scattering

Eberle, Aaron P.  R.; King, Hubert E.; Ravikovitch, Peter I.; Walters, Clifford C.; Rother, Gernot; Wesolowski, David J.

doi:10.1021/acs.energyfuels.6b01548

Title: Direct Measure of the Dense Methane Phase in Gas Shale Organic Porosity by Neutron Scattering

Abstract

Here, we report the first direct measurements of methane density in shale gas using small-angle neutron scattering. At a constant pressure, the density of methane in the inorganic pores is similar to the gas bulk density of the system conditions. Conversely, the methane density is 2.1 ± 0.2 times greater in the organic mesopores. Furthermore, classical density functional theory calculations show that this excess density in the organic pores persists to elevated temperatures, typical of shale gas reservoir conditions, providing new insight into the hydrocarbon storage mechanisms within these reservoirs.

Authors:

Eberle, Aaron P. R. ^[1]; King, Hubert E. ^[1]; Ravikovitch, Peter I. ^[1]; Walters, Clifford C. ^[1]; Rother, Gernot ^[2]; Wesolowski, David J. ^[2]

ExxonMobil Research and Engineering Company, Annandale, NJ (United States)
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Publication Date:: Tue Aug 30 00:00:00 EDT 2016

Research Org.:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1337027

Grant/Contract Number:: AC05-00OR22725

Resource Type:: Accepted Manuscript

Journal Name:: Energy and Fuels

Additional Journal Information:: Journal Volume: 30; Journal Issue: 11; Journal ID: ISSN 0887-0624

Publisher:: American Chemical Society (ACS)

Country of Publication:: United States

Language:: English

Subject:: 04 OIL SHALES AND TAR SANDS; SANS; gas shale; pore size distribution; adsorption

Citation Formats


                    Eberle, Aaron P.  R., King, Hubert E., Ravikovitch, Peter I., Walters, Clifford C., Rother, Gernot, and Wesolowski, David J. Direct Measure of the Dense Methane Phase in Gas Shale Organic Porosity by Neutron Scattering.  United States: N. p., 2016. 
Web.  doi:10.1021/acs.energyfuels.6b01548.

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                    Eberle, Aaron P.  R., King, Hubert E., Ravikovitch, Peter I., Walters, Clifford C., Rother, Gernot, & Wesolowski, David J. Direct Measure of the Dense Methane Phase in Gas Shale Organic Porosity by Neutron Scattering.  United States.  https://doi.org/10.1021/acs.energyfuels.6b01548

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                    Eberle, Aaron P.  R., King, Hubert E., Ravikovitch, Peter I., Walters, Clifford C., Rother, Gernot, and Wesolowski, David J. Tue .  
"Direct Measure of the Dense Methane Phase in Gas Shale Organic Porosity by Neutron Scattering".  United States.  https://doi.org/10.1021/acs.energyfuels.6b01548.  https://www.osti.gov/servlets/purl/1337027.

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@article{osti_1337027,

  title        = {Direct Measure of the Dense Methane Phase in Gas Shale Organic Porosity by Neutron Scattering},

  author       = {Eberle, Aaron P.  R. and King, Hubert E. and Ravikovitch, Peter I. and Walters, Clifford C. and Rother, Gernot and Wesolowski, David J.},

  abstractNote = {Here, we report the first direct measurements of methane density in shale gas using small-angle neutron scattering. At a constant pressure, the density of methane in the inorganic pores is similar to the gas bulk density of the system conditions. Conversely, the methane density is 2.1 ± 0.2 times greater in the organic mesopores. Furthermore, classical density functional theory calculations show that this excess density in the organic pores persists to elevated temperatures, typical of shale gas reservoir conditions, providing new insight into the hydrocarbon storage mechanisms within these reservoirs.},

  doi          = {10.1021/acs.energyfuels.6b01548},

  journal      = {Energy and Fuels},

  number       = 11,

  volume       = 30,

  place        = {United States},

  year         = {Tue Aug 30 00:00:00 EDT 2016},

  month        = {Tue Aug 30 00:00:00 EDT 2016}

}

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https://doi.org/10.1021/acs.energyfuels.6b01548

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Works referenced in this record:

Potentials of physical adsorption
journal, January 1991

Vidali, Gianfranco; Ihm, G.; Kim, Hye-Young
Surface Science Reports, Vol. 12, Issue 4
DOI: 10.1016/0167-5729(91)90012-M

Mercury Capillary Pressure Measurements on Barnett Core
journal, August 2013

Sigal, Richard F.
SPE Reservoir Evaluation & Engineering, Vol. 16, Issue 04
DOI: 10.2118/167607-PA

The importance of shale composition and pore structure upon gas storage potential of shale gas reservoirs
journal, June 2009

Ross, Daniel J. K.; Marc Bustin, R.
Marine and Petroleum Geology, Vol. 26, Issue 6
DOI: 10.1016/j.marpetgeo.2008.06.004

Vapor−Liquid Phase Coexistence, Critical Properties, and Surface Tension of Confined Alkanes
journal, April 2009

Singh, Sudhir K.; Sinha, Ankit; Deo, Goutam
The Journal of Physical Chemistry C, Vol. 113, Issue 17
DOI: 10.1021/jp8073915

Density functional theories and molecular simulations of adsorption and phase transitions in nanopores
journal, June 2001

Ravikovitch, Peter I.; Vishnyakov, Aleksey; Neimark, Alexander V.
Physical Review E, Vol. 64, Issue 1
DOI: 10.1103/PhysRevE.64.011602

Critical shift of a confined fluid in a nanopore
journal, June 2004

Zarragoicoechea, Guillermo J.; Kuz, Victor A.
Fluid Phase Equilibria, Vol. 220, Issue 1
DOI: 10.1016/j.fluid.2004.02.014

The neutron scattering length density of kerogen and coal as determined by CH3OH/CD3OH exchange
journal, January 2014

Thomas, Jeffrey J.; Valenza, John J.; Craddock, Paul R.
Fuel, Vol. 117
DOI: 10.1016/j.fuel.2013.09.075

Role of Repulsive Forces in Determining the Equilibrium Structure of Simple Liquids
journal, June 1971

Weeks, John D.; Chandler, David; Andersen, Hans C.
The Journal of Chemical Physics, Vol. 54, Issue 12
DOI: 10.1063/1.1674820

Nitrogen Adsorption in Slit Pores at Ambient Temperatures: Comparison of Simulation and Experiment
journal, December 1994

Kaneko, Katsumi; Cracknell, Roger F.; Nicholson, David
Langmuir, Vol. 10, Issue 12
DOI: 10.1021/la00024a036

Molecular simulation of methane adsorption in micro- and mesoporous carbons with applications to coal and gas shale systems
journal, April 2013

Mosher, Keith; He, Jiajun; Liu, Yangyang
International Journal of Coal Geology, Vol. 109-110
DOI: 10.1016/j.coal.2013.01.001

Density Functional Theory Model of Adsorption Deformation
journal, December 2006

Ravikovitch, Peter I.; Neimark, Alexander V.
Langmuir, Vol. 22, Issue 26
DOI: 10.1021/la061092u

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
DOI: 10.1021/ef201704t

Interactions between Methane and Polycyclic Aromatic Hydrocarbons: A High Accuracy Benchmark Study
journal, November 2012

Smith, Daniel G. A.; Patkowski, Konrad
Journal of Chemical Theory and Computation, Vol. 9, Issue 1
DOI: 10.1021/ct3008809

Fundamental-measure free-energy density functional for hard spheres: Dimensional crossover and freezing
journal, April 1997

Rosenfeld, Y.; Schmidt, M.; Löwen, H.
Physical Review E, Vol. 55, Issue 4
DOI: 10.1103/PhysRevE.55.4245

Porosity and Permeability of Eastern Devonian Gas Shale
journal, March 1988

Soeder, D. J.
SPE Formation Evaluation, Vol. 3, Issue 01
DOI: 10.2118/15213-PA

Density Functional Theory of Adsorption in Spherical Cavities and Pore Size Characterization of Templated Nanoporous Silicas with Cubic and Three-Dimensional Hexagonal Structures
journal, March 2002

Ravikovitch, Peter I.; Neimark, Alexander V.
Langmuir, Vol. 18, Issue 5
DOI: 10.1021/la0107594

Development of organic porosity in the Woodford Shale with increasing thermal maturity
journal, December 2012

Curtis, Mark E.; Cardott, Brian J.; Sondergeld, Carl H.
International Journal of Coal Geology, Vol. 103
DOI: 10.1016/j.coal.2012.08.004

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
DOI: 10.1107/S0021889806035059

DFT/CC investigation of physical adsorption on a graphite (0001) surface
journal, January 2010

Rubeš, Miroslav; Kysilka, Jiří; Nachtigall, Petr
Physical Chemistry Chemical Physics, Vol. 12, Issue 24
DOI: 10.1039/c001155j

Shale Gas-in-Place Calculations Part I: New Pore-Scale Considerations
journal, March 2012

Ambrose, Raymond J.; Hartman, Robert C.; Diaz-Campos, Mery
SPE Journal, Vol. 17, Issue 01
DOI: 10.2118/131772-PA

Calibration of Pore Volume in Adsorption Experiments and Theoretical Models
journal, September 1997

Neimark, Alexander V.; Ravikovitch, Peter I.
Langmuir, Vol. 13, Issue 19
DOI: 10.1021/la970266s

Organic matter-hosted pore system, Marcellus Formation (Devonian), Pennsylvania
journal, February 2013

Milliken, Kitty L.; Rudnicki, Mark; Awwiller, David N.
AAPG Bulletin, Vol. 97, Issue 2
DOI: 10.1306/07231212048

Fractal Geometry of Rocks
journal, April 1999

Radliński, A. P.; Radlińska, E. Z.; Agamalian, M.
Physical Review Letters, Vol. 82, Issue 15
DOI: 10.1103/PhysRevLett.82.3078

Pore-throat sizes in sandstones, tight sandstones, and shales
journal, March 2009

Nelson, Philip H.
AAPG Bulletin, Vol. 93, Issue 3
DOI: 10.1306/10240808059

Appropriate volumes for adsorption isotherm studies: The absolute void volume, accessible pore volume and enclosing particle volume
journal, December 2007

Do, D. D.; Do, H. D.
Journal of Colloid and Interface Science, Vol. 316, Issue 2
DOI: 10.1016/j.jcis.2007.08.020

Spectrum of pore types and networks in mudrocks and a descriptive classification for matrix-related mudrock pores
journal, June 2012

Loucks, Robert G.; Reed, Robert M.; Ruppel, Stephen C.
AAPG Bulletin, Vol. 96, Issue 6
DOI: 10.1306/08171111061

Pore Architecture and Connectivity in Gas Shale
journal, February 2015

King, Hubert E.; Eberle, Aaron P. R.; Walters, Clifford C.
Energy & Fuels, Vol. 29, Issue 3
DOI: 10.1021/ef502402e

Mean and Equilibrium Molecular Structures of Methane and Deuteromethane as Determined by Electron Diffraction
journal, October 1961

Bartell, L. S.; Kuchitsu, Kozo; deNeui, R. J.
The Journal of Chemical Physics, Vol. 35, Issue 4
DOI: 10.1063/1.1732025

Effect of Capillary Pressure on Phase Behavior in Tight Rocks and Shales
journal, July 2013

Nojabaei, B. .; Johns, R. T. . T.; Chu, L. .
SPE Reservoir Evaluation & Engineering, Vol. 16, Issue 03
DOI: 10.2118/159258-PA

Effect of capillary condensation on geomechanical and acoustic properties of shale formations
journal, September 2015

Bui, Binh T.; Tutuncu, Azra N.
Journal of Natural Gas Science and Engineering, Vol. 26
DOI: 10.1016/j.jngse.2015.08.027

Historical aspects of capillarity and capillary condensation
journal, May 2012

Sing, Kenneth S. W.; Williams, Ruth T.
Microporous and Mesoporous Materials, Vol. 154
DOI: 10.1016/j.micromeso.2011.09.022

Geochemical constraints on the origin and volume of gas in the New Albany Shale (Devonian–Mississippian), eastern Illinois Basin
journal, November 2010

Strąpoć, Dariusz; Mastalerz, Maria; Schimmelmann, Arndt
AAPG Bulletin, Vol. 94, Issue 11
DOI: 10.1306/06301009197

Molecular simulation and modelisation of methane/ethane mixtures adsorption onto a microporous molecular model of kerogen under typical reservoir conditions
journal, October 2014

Collell, Julien; Galliero, Guillaume; Gouth, François
Microporous and Mesoporous Materials, Vol. 197
DOI: 10.1016/j.micromeso.2014.06.016

Gas Occurrence In The Devonian Shale
conference, May 1979

Smith, E. C.; Cremean, S. P.; Kozair, G.
All Days
DOI: 10.2118/7921-MS

Transient Flow In Naturally Fractured Reservoirs And Its Application To Devonian Gas Shales
conference, September 1980

Kucuk, Fikri; Sawyer, Walter K.
All Days
DOI: 10.2118/9397-MS

From Oil-Prone Source Rock to Gas-Producing Shale Reservoir - Geologic and Petrophysical Characterization of Unconventional Shale Gas Reservoirs
conference, April 2013

Passey, Quinn R.; Bohacs, Kevin; Esch, William Lee
International Oil and Gas Conference and Exhibition in China
DOI: 10.2118/131350-MS

Micro-Structural Studies of Gas Shales
conference, April 2013

Sondergeld, Carl H.; Ambrose, Raymond Joseph; Rai, Chandra Shekhar
SPE Unconventional Gas Conference
DOI: 10.2118/131771-MS

Capillary Pressure Measurement using Reservoir Fluids in a Middle Bakken Core
conference, April 2015

Karimi, S. .; Kazemi, H. .
SPE Western Regional Meeting, All Days
DOI: 10.2118/174065-MS

Pore-Size Dependence of Fluid Phase Behavior and the Impact on Shale Gas Reserves
conference, August 2013

Rahmani Didar, B.; Akkutlu, I. Y.
Unconventional Resources Technology Conference, Denver, Colorado, 12-14 August 2013
DOI: 10.1190/urtec2013-183

Works referencing / citing this record:

A non-invasive method to directly quantify surface heterogeneity of porous materials
journal, February 2018

Chiang, Wei-Shan; Georgi, Daniel; Yildirim, Taner
Nature Communications, Vol. 9, Issue 1
DOI: 10.1038/s41467-018-03151-w

Molecular simulation of CH 4 adsorption behavior in slit nanopores: Verification of simulation methods and models
journal, July 2019

Cao, Jinrong; Liang, Yunfeng; Masuda, Yoshihiro
AIChE Journal, Vol. 65, Issue 11
DOI: 10.1002/aic.16733

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Title: Direct Measure of the Dense Methane Phase in Gas Shale Organic Porosity by Neutron Scattering

Abstract

Citation Formats

Potentials of physical adsorption journal, January 1991

Mercury Capillary Pressure Measurements on Barnett Core journal, August 2013

The importance of shale composition and pore structure upon gas storage potential of shale gas reservoirs journal, June 2009

Vapor−Liquid Phase Coexistence, Critical Properties, and Surface Tension of Confined Alkanes journal, April 2009

Density functional theories and molecular simulations of adsorption and phase transitions in nanopores journal, June 2001

Critical shift of a confined fluid in a nanopore journal, June 2004

The neutron scattering length density of kerogen and coal as determined by CH3OH/CD3OH exchange journal, January 2014

Role of Repulsive Forces in Determining the Equilibrium Structure of Simple Liquids journal, June 1971

Nitrogen Adsorption in Slit Pores at Ambient Temperatures: Comparison of Simulation and Experiment journal, December 1994

Molecular simulation of methane adsorption in micro- and mesoporous carbons with applications to coal and gas shale systems journal, April 2013

Density Functional Theory Model of Adsorption Deformation journal, December 2006

Pore Accessibility by Methane and Carbon Dioxide in Coal as Determined by Neutron Scattering journal, February 2012

Interactions between Methane and Polycyclic Aromatic Hydrocarbons: A High Accuracy Benchmark Study journal, November 2012

Fundamental-measure free-energy density functional for hard spheres: Dimensional crossover and freezing journal, April 1997

Porosity and Permeability of Eastern Devonian Gas Shale journal, March 1988

Density Functional Theory of Adsorption in Spherical Cavities and Pore Size Characterization of Templated Nanoporous Silicas with Cubic and Three-Dimensional Hexagonal Structures journal, March 2002

Development of organic porosity in the Woodford Shale with increasing thermal maturity journal, December 2012

Reduction and analysis of SANS and USANS data using IGOR Pro journal, November 2006

DFT/CC investigation of physical adsorption on a graphite (0001) surface journal, January 2010

Shale Gas-in-Place Calculations Part I: New Pore-Scale Considerations journal, March 2012

Calibration of Pore Volume in Adsorption Experiments and Theoretical Models journal, September 1997

Organic matter-hosted pore system, Marcellus Formation (Devonian), Pennsylvania journal, February 2013

Fractal Geometry of Rocks journal, April 1999

Pore-throat sizes in sandstones, tight sandstones, and shales journal, March 2009

Appropriate volumes for adsorption isotherm studies: The absolute void volume, accessible pore volume and enclosing particle volume journal, December 2007

Spectrum of pore types and networks in mudrocks and a descriptive classification for matrix-related mudrock pores journal, June 2012

Pore Architecture and Connectivity in Gas Shale journal, February 2015

Mean and Equilibrium Molecular Structures of Methane and Deuteromethane as Determined by Electron Diffraction journal, October 1961

Effect of Capillary Pressure on Phase Behavior in Tight Rocks and Shales journal, July 2013

Effect of capillary condensation on geomechanical and acoustic properties of shale formations journal, September 2015

Historical aspects of capillarity and capillary condensation journal, May 2012

Geochemical constraints on the origin and volume of gas in the New Albany Shale (Devonian–Mississippian), eastern Illinois Basin journal, November 2010

Molecular simulation and modelisation of methane/ethane mixtures adsorption onto a microporous molecular model of kerogen under typical reservoir conditions journal, October 2014

Gas Occurrence In The Devonian Shale conference, May 1979

Transient Flow In Naturally Fractured Reservoirs And Its Application To Devonian Gas Shales conference, September 1980

From Oil-Prone Source Rock to Gas-Producing Shale Reservoir - Geologic and Petrophysical Characterization of Unconventional Shale Gas Reservoirs conference, April 2013

Micro-Structural Studies of Gas Shales conference, April 2013

Capillary Pressure Measurement using Reservoir Fluids in a Middle Bakken Core conference, April 2015

Pore-Size Dependence of Fluid Phase Behavior and the Impact on Shale Gas Reserves conference, August 2013

A non-invasive method to directly quantify surface heterogeneity of porous materials journal, February 2018

Molecular simulation of CH 4 adsorption behavior in slit nanopores: Verification of simulation methods and models journal, July 2019

Potentials of physical adsorption
journal, January 1991

Mercury Capillary Pressure Measurements on Barnett Core
journal, August 2013

The importance of shale composition and pore structure upon gas storage potential of shale gas reservoirs
journal, June 2009

Vapor−Liquid Phase Coexistence, Critical Properties, and Surface Tension of Confined Alkanes
journal, April 2009

Density functional theories and molecular simulations of adsorption and phase transitions in nanopores
journal, June 2001

Critical shift of a confined fluid in a nanopore
journal, June 2004

The neutron scattering length density of kerogen and coal as determined by CH3OH/CD3OH exchange
journal, January 2014

Role of Repulsive Forces in Determining the Equilibrium Structure of Simple Liquids
journal, June 1971

Nitrogen Adsorption in Slit Pores at Ambient Temperatures: Comparison of Simulation and Experiment
journal, December 1994

Molecular simulation of methane adsorption in micro- and mesoporous carbons with applications to coal and gas shale systems
journal, April 2013

Density Functional Theory Model of Adsorption Deformation
journal, December 2006

Pore Accessibility by Methane and Carbon Dioxide in Coal as Determined by Neutron Scattering
journal, February 2012

Interactions between Methane and Polycyclic Aromatic Hydrocarbons: A High Accuracy Benchmark Study
journal, November 2012

Fundamental-measure free-energy density functional for hard spheres: Dimensional crossover and freezing
journal, April 1997

Porosity and Permeability of Eastern Devonian Gas Shale
journal, March 1988

Density Functional Theory of Adsorption in Spherical Cavities and Pore Size Characterization of Templated Nanoporous Silicas with Cubic and Three-Dimensional Hexagonal Structures
journal, March 2002

Development of organic porosity in the Woodford Shale with increasing thermal maturity
journal, December 2012

Reduction and analysis of SANS and USANS data using IGOR Pro
journal, November 2006

DFT/CC investigation of physical adsorption on a graphite (0001) surface
journal, January 2010

Shale Gas-in-Place Calculations Part I: New Pore-Scale Considerations
journal, March 2012

Calibration of Pore Volume in Adsorption Experiments and Theoretical Models
journal, September 1997

Organic matter-hosted pore system, Marcellus Formation (Devonian), Pennsylvania
journal, February 2013

Fractal Geometry of Rocks
journal, April 1999

Pore-throat sizes in sandstones, tight sandstones, and shales
journal, March 2009

Appropriate volumes for adsorption isotherm studies: The absolute void volume, accessible pore volume and enclosing particle volume
journal, December 2007

Spectrum of pore types and networks in mudrocks and a descriptive classification for matrix-related mudrock pores
journal, June 2012

Pore Architecture and Connectivity in Gas Shale
journal, February 2015

Mean and Equilibrium Molecular Structures of Methane and Deuteromethane as Determined by Electron Diffraction
journal, October 1961

Effect of Capillary Pressure on Phase Behavior in Tight Rocks and Shales
journal, July 2013

Effect of capillary condensation on geomechanical and acoustic properties of shale formations
journal, September 2015

Historical aspects of capillarity and capillary condensation
journal, May 2012

Geochemical constraints on the origin and volume of gas in the New Albany Shale (Devonian–Mississippian), eastern Illinois Basin
journal, November 2010

Molecular simulation and modelisation of methane/ethane mixtures adsorption onto a microporous molecular model of kerogen under typical reservoir conditions
journal, October 2014

Gas Occurrence In The Devonian Shale
conference, May 1979

Transient Flow In Naturally Fractured Reservoirs And Its Application To Devonian Gas Shales
conference, September 1980

From Oil-Prone Source Rock to Gas-Producing Shale Reservoir - Geologic and Petrophysical Characterization of Unconventional Shale Gas Reservoirs
conference, April 2013

Micro-Structural Studies of Gas Shales
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Capillary Pressure Measurement using Reservoir Fluids in a Middle Bakken Core
conference, April 2015

Pore-Size Dependence of Fluid Phase Behavior and the Impact on Shale Gas Reserves
conference, August 2013

A non-invasive method to directly quantify surface heterogeneity of porous materials
journal, February 2018

Molecular simulation of CH 4 adsorption behavior in slit nanopores: Verification of simulation methods and models
journal, July 2019