What is the shape of pores in natural rocks?

Chen, Quan; Song, Y.-Q.
May 2002
Journal of Chemical Physics;5/15/2002, Vol. 116 Issue 19, p8247
Academic Journal
The geometry of the internal space of porous media determines transport properties at all scales. We demonstrate an experimental scheme to quantify the body-to-throat ratio and the shape of the pores through direct measurements of geometrical quantities. We used a constant-rate mercury injection measurement to obtain the throat size and the pore-body volume, and an NMR method (DDIF) to obtain the pore size distribution in a Berea sandstone. This approach uniquely identifies the pore throats and bodies and enables a quantification of their sizes. Our results show that the pore bodies in Berea sandstone is likely to be described by a very much elongated cavity.


Related Articles

  • Modeling the conductivity of highly consolidated, bi-connected porous rocks. Chinh, Pham Duc // Journal of Applied Physics;7/15/1998, Vol. 84 Issue 2, p796 

    Presents a study which focused on the pore space for many highly porous rocks. Reference to the formation of sedimentary rocks; Functions of medium approximations in evaluating effective properties of random heterogeneous systems; Reduction of pore space into open pockets.

  • Elastic wave attenuation in rocks containing fluids. Berryman, James G. // Applied Physics Letters;9/8/1986, Vol. 49 Issue 10, p552 

    The low-frequency limit of Biot’s theory of fluid-saturated porous media predicts that the coefficients for viscous attenuation of shear waves and of the fast compressional wave are proportional to the fluid permeability. Although the observed attenuation is generally in qualitative...

  • Image-based models of porous media: Application to Vycor glass and carbonate rocks. Crossley, P. Anthony; Schwartz, Lawrence M.; Banavar, Jayanth R. // Applied Physics Letters;12/30/1991, Vol. 59 Issue 27, p3553 

    Examines the application of image-based models of porous media to Vycor glass and carbonate rocks. Interpenetrating percolating phases of porous media; Difference between pore and matrix voxels; Comparison between the pore shapes generated by G convolution and LG smoothing.

  • HMX and HNS shock sensitivity correlation with specific heat and reactive temperature magnitudes. Billingsley, James P. // AIP Conference Proceedings;2000, Vol. 505 Issue 1, p899 

    Two of the needed elastic parameters for predicting velocities in porous, fluid-filled rocks, the bulk modulus of the rock and the shear modulus of the rock, are very difficult to obtain in situ. A novel modeling apporach is developed by inverting the Biot-Geertsma-Gassmann (BGG) and shear-wave...

  • On the Theory of Local Acoustic Probing of Borehole Zones in Rocks. Shagapov, V. Sh.; Bulatova, Z. A. // Journal of Applied Mechanics & Technical Physics;Nov/Dec2002, Vol. 43 Issue 6, p902 

    A theory of local probing of borehole zones in porous and permeable rocks by means of acoustic waves is developed. Acoustic signals are assumed to propagate in an annular gap between the probe body and porous permeable wall of the borehole. Quantitative characteristics and special features of...

  • Wet Transfer Effect on the Oxygen Content in the Underground Tunnel. XIE Haimin; LI Maode // Applied Mechanics & Materials;2014, Issue 563, p229 

    No abstract available.

  • Semi-empirical equations for the systematic decrease in permeability with depth in porous and fractured media. Xiao-Wei Jiang; Xu-Sheng Wang; Li Wan // Hydrogeology Journal;Jun2010, Vol. 18 Issue 4, p839 

    Permeability loss with depth is a general trend in geological media and plays an essential role in subsurface fluid flow and solute transport. In the near surface zone where groundwater movement is active, the decrease in permeability with depth is dominated by the mechanical compaction of...

  • Permeability-porosity Relationships in Rocks Subjected to Various Evolution Processes. Bernabé, Y.; Mok, U.; Evans, B. // Pure & Applied Geophysics;May2003, Vol. 160 Issue 5/6, p937 

    — It is well known that there is no “universal” permeability-porosity relationship valid in all porous media. However, the evolution of permeability and porosity in rocks can be constrained provided that the processes changing the pore space are known. In this paper, we review...

  • Experimental and theoretical memory diffusion of water in sand. Iaffaldano, G.; Caputo, M.; Martino, S. // Hydrology & Earth System Sciences Discussions;2005, Vol. 2 Issue 4, p1329 

    The basic equations used to study the fluid diffusion in porous media have been set by Fick and Darcy in the mid of the XIXth century but some data on the flow of fluids in rocks exhibit properties which may not be interpreted with the classical theory of propagation of pressure and fluids in...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics