Pore structure characterization in rock salt

doi:10.1016/S0013-7952(96)00116-0

Engineering Geology

Volume 47, Issues 1–2, 14 August 1997, Pages 17-30

https://doi.org/10.1016/S0013-7952(96)00116-0 Get rights and content

Abstract

The pore space of rock salt from the Lower Salt Unit of the Cardona Saline Fm. (Spain) was characterized using three independent methods (mercury injection porosimetry, saturation in a low viscosity isoparaflin and gas adsorption). The total porosity in the studied samples ranged from 0.97 to 3.09%. Pores may be present as macropores (> 7.5 μm), micropores (between 7.5 μm and 100 nm) and infrapores (< 100 nm). The porosity is mainly associated with a well developed microporous system, which, in turn, is related to the presence of clay minerals in the rock salt. Macropores are randomly distributed throughout the rock body. They are sheet-like rather than cylindrical. The degree of connectivity of the porous network is variable. Infraporosity consists of a bundle of non-intersecting pores, whereas microporosity can be considered as a network of pores and throats. Macro and micropores exhibit a fractal pore-surface structure, whereas infrapores have a non-fractal (Euclidean) structure.

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Citation Excerpt :
The fractal dimensions (determined by Neimark model) of all loess specimens are summarized in Table 5. It can be seen that most fractal dimensions of the macro-fractal zone, DNmacro, are larger than 3, which disagrees with the definition of fractal dimension and could be attributed to two reasons: (1) those pores may not have a fractal behavior [49,51,62,63]; (2) those pores have high compressibility [38,48]. All fractal dimensions of the micro-fractal zone, DNmicro, are between 2 and 3.
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Research paperPore structure characterization in rock salt

Abstract

J. Catal.

Appl. Geochem.

Adv. Phys.

On laboratory measurements on porosity and permeability of salt rocks (Bressan Basin - France)

Evaporite deposition and diagenesis in the Saline (Potash) Catalan Basin, Upper Eocene

Characterization of pore structure: porosimetry and sorption

Langmuir

Thermo-hydro-chemico-mechanical processes in salt. Application to the measurement of permeability of gas and brine

Potential gas generation in rock salt repositories

Porous Media. Fluid Transport and Pore Structure

Drainage capillary-pressure functions and the influence of connate water

Soc. Petrol. Eng. J.