... ABSTRACT: Fluid flow and compressional wave propagation measurements were made on fractured samples prior to and after the chemical deposition of calcium carbonate. We observed that the initial void geometry (aperture and contact area) controlled the amount and spatial distribution of mineral...

... ABSTRACT: Opening-mode fractures in siliciclastic and carbonate host rocks from different geologic settings consistently show power-law aperture-size distributions when measured along one-dimensional scanlines. Exponents (slopes) and pre-exponential coefficients (intensities) of the power...

... treatment the fluid permeability was measured under hydrostatic stress conditions using the steady state flow method. Reservoir Characterization flow in porous media Upstream Oil & Gas Fluid Dynamics aperture quartz pore pressure intensifier crack density Westerly granite basalt...

... found that the permeability of rock joints is strongly affected by both the aperture and the joint surface roughness. In particular, it is thought that the flow path along the rock joint is determined by the contact condition of the joint surface roughness. Based on the shear mechanical model for rock...

...) within otherwise porous, opening-mode fractures, and the presence of an aperture size threshold below which fractures are completely filled and above which porosity is preserved. Significant progress has been made as well in theoretical fracture mechanics and geomechanical modeling, allowing prediction...

... to predict the steady flow of Bingham viscoplastic materials in rectangular fractures with variable aperture and surface roughness. drilling fluid chemistry production control logic & formal reasoning production monitoring drilling fluid selection and formulation Reservoir Surveillance...

... ABSTRACT ABSTRACT: Parallel and quasi-parallel joints represent one of the most often observed permeability structures. Frequently, joint sets are closely spaced and although joint mechanical interaction should significantly affect their aperture, the interaction is usually ignored...

... for the Portugués dam in Ponce, Puerto Rico. fluid modeling Reservoir Characterization US government hydraulic fracturing equation of state complex reservoir fracture characterization Upstream Oil & Gas DFN model orientation aperture site characterization data borehole fracture network...

.... The results of hydraulic tests indicate that the fracture has a spatially variable aperture with a mean of 126 m and standard deviation of 95 m. The tracer experiment was initiated by injecting a radial disk of conservative tracer into the fracture plane. The appearance of tracer down-gradient was monitored...

.... A Computer Assisted Tomography (CAT) scanning analysis was performed before and during the application of confining pressure to determine the fracture geometry during the closure process. The fracture was shown to be a variable aperture system with (when considering possible fluid conductance) surface...

... ABSTRACT: A network model based on a semi-analytical solution method was used to simulate the flow of groundwater and migration of solute in a fracture network. The solution domain consisted of a major fracture of large aperture that bisected a stochastically generated set of finer...

... ABSTRACT: Permeability of highly fractured rock masses may be quantified as a tensor, which depends on the spacing, connectivity, orientation and aperture of fractures in the rock mass. Current models ignore dependency effects of connected fracture flow systems. A preliminary new model...

..., a typical or average aperture, and a simulated joint roughness. The degree of joint closure, or remaining aperture, could be controlled by applied stress level. Full closure of the joint was ultimately obtained in the model, and the results compared well with laboratory compliance tests. US...

... joint parameters such as aperture, joint roughness, joint frequency, and dilation under various normal and shear stresses. Then, two kinds of mapping by SVT and SAT which were obtained from the investigation of the dam site are discussed in terms of joint orientation and distribution. Reservoir...