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Keywords: porosity
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Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-076
... are obtained by leaching tests on monolithic and crushed samples. The paper presents this environmental aspect of solidification of sludge namely the porosity of the geomaterials and also describes the influence of the used additives and analysis of resulting leaching waters in relation with the...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-071
... (Dykast, 1993) A MOTORWAY OVER CLAYEY FILLS OF OPEN PIT COAL MINES Jan Bohá 1, Ji í kopek2 ABSTRACT In Northern Bohemia, a new motorway crosses non-engineered landfills of clayey spoil from open cast coal mines. Recent fills are soft, unconsolidated, double porosity medium, originally consisting of...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-087
... column system, where constant head conditions are applied at both ends and constant concentrations for both the chemical reagent and the contaminant at the bottom, as shown in the following Figure. As the process of the contaminant removal advances, the porosity at the middle of the column changes from...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-089
... of collapsible behaviour: in the initial phase, clay fragments disintegrate (the effect of load and, may be, of rainfall) and, consequently, the effective porosity of the whole mass decreases. Strain hardening follows in the second phase. Fragmentary clay is a typical double-porosity geomaterial...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-172
... measured data, the relation between resistivity of the rock specimens, saturation, porosity and aperture of discontinuity are discussed. Furthermore, these results obtained by between tests are applied to rock mass assessment in a tunnel. INTRODUCTION The resistivity value of rocks cover a very wide...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-177
... resistivity. The resistivity of rocks has a tendency to decrease with increasing porosity. But, the resistivity does not always correspond to porosity even in the same kind of rock, because of different mineral compositions and pore geometry. The resistivity of rock increases with increasing the pore fluid...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-335
... dams causes energy loss and erosion of the damcore. production control reservoir simulation Discharge Reservoir Characterization Artificial Intelligence cement particle inlet porosity filter coefficient Reservoir Surveillance mass conservation law particle cement grout cement grout...
Proceedings Papers

Paper presented at the ISRM International Symposium, August 30–September 2, 1989
Paper Number: ISRM-IS-1989-149
... existence or formation of storativity (porosity and open fractures), and the movement of these fluids requires the existence of permeabili ty. 4.1 Hydrostatic conditions Rock porosity may be formed under hydrostatic conditions by two principal processes: 1220 1. The burial, compaction, and diagenesis of...
Proceedings Papers

Paper presented at the ISRM International Symposium, August 30–September 2, 1989
Paper Number: ISRM-IS-1989-073
... effect of structural defects and cracks consists in two main phenomena: in decreasing of a cohesion and in increasing of a crack porosity. These two phenomenon a develop simultaneously but gradually while the nonreversible shear strains increases. It follows from numerous experiments of Karman (1911...
Proceedings Papers

Paper presented at the ISRM International Symposium, August 30–September 2, 1989
Paper Number: ISRM-IS-1989-136
... better understand recovery, especially the compleity of reservoirs, leading to large uncertainties in estimated total recovery, recovery rates, and recovery method. Reservoir complexity is due to the spatial heterogeneity in porosity, permeability, clay content, fracture density, etc. These spatial...
Proceedings Papers

Paper presented at the ISRM International Symposium, August 30–September 2, 1989
Paper Number: ISRM-IS-1989-163
... Porosity Correction porosity rock resistivity resistivity ABSTRACT: One of the present day challenges in the oil industry is the proper characterization of in situ reservoir rock properties prior to full scale development. In this respect, experimental data acquisition requires the simulation of...
Proceedings Papers

Paper presented at the ISRM International Symposium, August 30–September 2, 1989
Paper Number: ISRM-IS-1989-024
... ranging from 0.0009 md to 200 md and taken from a maximum depth of 4400 m. Correlations among permeability variation, initial permeability, porosity and other properties of the samples are shown. 1 INTRODUCTION Increasing demand for natural gas along With depletion of gas reserves has raised considerable...
Proceedings Papers

Paper presented at the ISRM International Symposium, August 30–September 2, 1989
Paper Number: ISRM-IS-1989-026
...- pending on the geological environment of the rock. In the next section, we describe our testing device. Then, we report both permeability and electrical conductivity data on three Fontainebleau Sandstone sam- ples and finally we relate the experimen- tal results to porosity structures previ- ously...
Proceedings Papers

Paper presented at the ISRM International Symposium, August 30–September 2, 1989
Paper Number: ISRM-IS-1989-051
... presented. This method is based on the use of the geometric mean model for estimating the thermal conductivity of the different lithofacies of a given well; the various well logs are interpreted in terms of lithologic content and porosity; a mineralogic composition varying with the stratigraphy is assumed...
Proceedings Papers

Paper presented at the ISRM International Symposium, August 30–September 2, 1989
Paper Number: ISRM-IS-1989-001
... expressed in a function of porosity. The characteristic pressures are responsible for the OCCurrence of the characteristic points on the curves representing the dependence betmeen the confining pressure and strength, strain at failure, elasticity limit and Young's mo- dUlus. The influence of the pore...
Proceedings Papers

Paper presented at the ISRM International Symposium, August 30–September 2, 1989
Paper Number: ISRM-IS-1989-022
... well logging strength variation porosity log analysis Kota sandstone resistance strength parameter Reservoir Characterization MPa Upstream Oil & Gas overburden stress Indian Institute sandstone Multimeter resistivity specimen rock specimen saturation electrical resistivity...
Proceedings Papers

Paper presented at the ISRM International Symposium, August 30–September 2, 1989
Paper Number: ISRM-IS-1989-154
... domain of the next generation of petroleum and rock engineers and applied earth scientists; currently, only the deep Kola Peninsula scientific borehole exceeds this limit. A number of special and important cases were addressed during the technical presentations. 1.1 - Rocks with Abnormal High Porosity...
Proceedings Papers

Paper presented at the ISRM International Symposium, August 31–September 3, 1986
Paper Number: ISRM-IS-1986-035
... made it possible to assess the influence of various parameters (Young's modulus, surface energy and porosity) on the intensity of the microcraking. Finally, experimental results make it possible to confirm the model and establish a regional state of stress in the Middle East. RESUME Apres un bref...
Proceedings Papers

Paper presented at the ISRM International Symposium, September 21–24, 1981
Paper Number: ISRM-IS-1981-015
... porosity as an index of compaction or density of rock, and unconfined compressive strength qu or ten- sile strength at as an index of the bonding or cementation strength. Figs. 1(Yoshinaka & Onodera 1978) and 2 show the relation of wsat to qu of sedimen- tary rocks, qu and at to n of weathered granite...
Proceedings Papers

Paper presented at the ISRM International Symposium, September 21–24, 1981
Paper Number: ISRM-IS-1981-096
... pressure transient analysis Upstream Oil & Gas high water loss porosity pressure transient testing relation dam site Lugeon drill hole Reservoir Characterization frequency weak feature Significance limestone Drilling fracture core recovery hydraulic fracturing karstic...

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