... 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 initial heavy...

... 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 lumps of typical dimensions from a few millimetres to a few hundred millimetres...

... 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...

... 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, like bioclastic, calcareous, residual...

... of rock mass. In this paper, using 17 types of intact rock specimens and 2 types of rock specimens with single joint, the resistivity of these specimens are measured in the laboratory. From these measured data, the relation between resistivity of the rock specimens, saturation,. porosity and aperture...

... Upstream Oil & Gas physical property specimen rock mass Reservoir Characterization electrical resistivity water saturation conductivity intrinsic matrix resistivity well logging clay content porosity pore fluid resistivity granite specimen log analysis matrix resistivity...

... of the filtration phenomenon z Cv z nCD zt nC t q S h = + (3) where n is the porosity and Dh is the dispersion coefficient. Rearranging equation (3) by equation (1) and equation (2) is as follows (Ito et al., 1996): z Cv z nCD zt nCCv ShS = + (4) And Darcy equation...

... between porosity and FRF for consolidated sandstone cores of the Gulf Coast, the following empirical relation was found by Archie: 1 FRF=- ¢m Where ¢ = porosity fraction of the sand and m "= ~rchie cementation factor. In a general form (Hl1chie 1978), equation (2) can be written as: a FRF=- ¢m Where...

... 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...

... depending 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 samples and finally we relate the experimental results to porosity structures previously observed...

... is 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...

... 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...

... in resistivity at high pressure. These contradicting observations clearly reveals that the influence of pressure on rock resistivity is a complex phenomenon and cannot be generalized. well logging strength variation porosity log analysis Kota sandstone resistance strength parameter Reservoir...

... be the 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...

... the 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...

... fluid modeling Upstream Oil & Gas cohesion boundary dyke equation of state calculation coefficient nonreversible shear strain gradual shear failure reservoir geomechanics displacement great depth korotkov gradual failure Reservoir Characterization explosion porosity...

... to 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...

... and the stability condition. Several examples have 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...

... of soft rocks. Then, these relations were investigated using saturated water content or porosity as an index of compaction or density of rock, and unconfined compressive strength qu or tensile strength σ t as an index of the bonding or cementation strength. Figs. 1(Yoshinaka & Onodera 1978) and 2...

... porosity pressure transient testing relation dam site Lugeon drill hole Reservoir Characterization frequency weak feature Significance limestone Drilling fracture core recovery hydraulic fracturing karstic condition weak zone eastern india water loss subsurface weak feature...