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@INPROCEEDINGS{Rezaeyan:868317,
      author       = {Rezaeyan, Amirsaman and Seemann, Timo and Bertier, Pieter
                      and Pipich, Vitaliy and Leu, Leon and Kampman, Niko and
                      Feoktystov, Artem and Barnsley, Lester and Busch, Andreas},
      title        = {{U}nderstanding {P}ore {S}tructure of {M}udrocks and
                      {P}ore-{S}ize {D}ependent {S}orption {M}echanism {U}sing
                      {S}mall {A}ngle {N}eutron {S}cattering},
      reportid     = {FZJ-2019-06867},
      pages        = {1-13},
      year         = {2019},
      comment      = {Proceedings of the SPE/AAPG/SEG Asia Pacific Unconventional
                      Resources Technology Conference - Unconventional Resources
                      Technology Conference Tulsa, OK, USA, 2019. - ISBN
                      978-1-61399-673-7 - doi:10.15530/AP-URTEC-2019-198285},
      booktitle     = {Proceedings of the SPE/AAPG/SEG Asia
                       Pacific Unconventional Resources
                       Technology Conference - Unconventional
                       Resources Technology Conference Tulsa,
                       OK, USA, 2019. - ISBN 978-1-61399-673-7
                       - doi:10.15530/AP-URTEC-2019-198285},
      abstract     = {To quantitatively analyse the pore structure at a broad
                      pore scale range (~ 2 nm to ~ 2 μm), low pressure sorption
                      (LPS) and small angle neutron scattering (SANS) were
                      conducted on several mudrocks originating from radioactive
                      waste storage sites, hydrocarbon seals and shale gas
                      reservoirs across the globe. These include Opalinus Clay,
                      Switzerland, Posidonia Shale, Germany, and Carmel Claystone,
                      Bossier Shale, and Eagle Ford Shale, USA. Furthermore, upon
                      injection of supercritical fluids (deuterated methane, CD 4)
                      into the pore space of mudrocks, the phase behaviour
                      depending on pore size was investigated with subsequent
                      neutron scattering. The results have revealed a vast
                      heterogeneity, which can be related to the high clay
                      contents. Due to the high clay contents, pores smaller than
                      10 nm constitute a large fraction of total porosity (25-30
                      $\%)$ and up to 80 $\%$ of specific surface area (SSA).
                      Moreover, total porosity and SSA are not significantly
                      affected by thermal maturation. However, thermal maturity
                      contributes to different pore size distribution (PSD)
                      related to meso-and macro-pores. Thermal maturation is
                      likely to develop porosity at macroscale range, which can
                      enhance the permeability for continuum flow in organic rich
                      mudrocks. Results obtained from supercritical fluid sorption
                      within SANS experiments demonstrated the formation of an
                      adsorbed phase characterised by a higher density than
                      predicted for the bulk fluid by the equation of state. The
                      effect of sorbed phase is pore size dependent. It implies
                      that the density as well as the volume fraction of the
                      adsorbed phase are influenced by the pore structure; sorbed
                      phase tends to fill small pores, followed by progressively
                      filling larger pores. Mineralogy and maturity interplays
                      contribute to a pore network of few-to-several nano-Darcy
                      permeability in which pore size dependent transport
                      mechanisms can vary from diffusional transport in small
                      pores to slip flow in progressively larger pores. In order
                      to improve pore 2 URTEC-198285-MS network models, the
                      incorporation of SANS PSD as well as pore size dependent
                      sorption are important to more realistically understand
                      storage capacity and/or transport phenomena in mudrocks.},
      month         = {Nov},
      date          = {2019-11-18},
      organization  = {SPE/AAPG/SEG Asia Pacific
                       Unconventional Resources Technology
                       Conference, Brisbane (Australia), 18
                       Nov 2019 - 19 Nov 2019},
      cin          = {JCNS-1 / JCNS-FRM-II / MLZ},
      cid          = {I:(DE-Juel1)JCNS-1-20110106 /
                      I:(DE-Juel1)JCNS-FRM-II-20110218 / I:(DE-588b)4597118-3},
      pnm          = {6G4 - Jülich Centre for Neutron Research (JCNS) (POF3-623)
                      / 6G15 - FRM II / MLZ (POF3-6G15)},
      pid          = {G:(DE-HGF)POF3-6G4 / G:(DE-HGF)POF3-6G15},
      experiment   = {EXP:(DE-MLZ)KWS1-20140101 / EXP:(DE-MLZ)KWS3-20140101},
      typ          = {PUB:(DE-HGF)8 / PUB:(DE-HGF)7},
      doi          = {10.15530/AP-URTEC-2019-198285},
      url          = {https://juser.fz-juelich.de/record/868317},
}