Porosity and permeability determination of organic-rich Posidonia shales based on 3-D analyses by FIB-SEM microscopy

Grathoff, Georg H.; Peltz, Markus; Enzmann, Frieder; Kaufhold, Stephan

doi:https://doi.org/10.5194/se-7-1145-2016

Articles | Volume 7, issue 4

https://doi.org/10.5194/se-7-1145-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Special issue:

Pore-scale tomography & imaging - applications, techniques...

https://doi.org/10.5194/se-7-1145-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 7, issue 4

Research article

|

22 Jul 2016

Research article |

| 22 Jul 2016

Porosity and permeability determination of organic-rich Posidonia shales based on 3-D analyses by FIB-SEM microscopy

Georg H. Grathoff, Markus Peltz, Frieder Enzmann, and Stephan Kaufhold

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Final revised paper (published on 22 Jul 2016)
Preprint (discussion started on 16 Mar 2016)

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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RC1: 'Review notes', Anonymous Referee #1, 18 Apr 2016
- AC1: 'Response to Anonymous Referee #1', Georg Grathoff, 14 Jun 2016
RC2: 'Review of the manuscript', lionel esteban, 10 May 2016
- AC2: 'Response to Reviewer #2', Georg Grathoff, 14 Jun 2016

Short summary

This study improves our understanding of the evolution of pores in shales for modelling transport properties. 3-D microscopy on early and postmature Posidonia Shales showed similar porosities and pore size distributions. Large isolated pore clusters are within carbonates and clay minerals. Pores form during maturation in the postmature-matrix-filling organic matter. Modelled permeabilities are lowest perpendicular to bedding. They decrease with increasing maturity and are comparable to experimental data.