The micropore properties in different coals and their influences on outbursts of coal and gas

Vein microperthite and perthite have been formed via fluid mediated coarsening, formation of micropores and sub grains within braid microperthite.

Petrography studies show that devitrification in volcanic rocks can produce a considerable number of micropores.

Based on application of three pore water electric conduction models and the needs of reservoir fine evaluation, a numerical solution for the three pore components (free fluid pore, micro pore, and clay water) has been given in this paper.

A kind of water saturation explanatory model of argillaceous sandstone is presented, including the formation water alteration during the lithification, and the argillaceous sandstone conductive volume as micro pore conductive volume occupied by the bound water and conductive volume in the effective pore.

The results indicate that relatively high additional conductivity of clay and vegetal micro pore are the two main characteristics of low resistivity reservoir and low porosity & permeability reservoir.

The concrete materials have the characteristics of imperceptible,microcosmic and more micro-pores,even though confecting the good and high-performance concrete,but also have the micro-pores and micro-cracks.

The weathering of soft rock was systimatically analyzed through measuring its microsturcture, microporosity, macrofissure, and the physico chemical properties.

Study of micropore in coal by low- temperature nitrogen adsorption method and its significance;