... ABSTRACT: In this study, relations between characteristic impedance (product of sonic wave velocity and density), energy transformation and dynamic stress induced faults in rock specimen were investigated. To achieve this, peridotite and pyroxenite from Boliden Kevitsa mine in Sodankylä...

... and relations have been introduced to predict the penetration rate as a function of intact and mass rock and also machine specifications. Numerous simple and comprehensive methods have been proposed for predicting the TBM performance by researchers (Graham, 1976; Farmer and Glossop, 1980; Hughes, 1986; Rostami...

... siliceous rock overburden dynamic flow in porous media geological subdiscipline displacement fracture network compaction hydrocarbon field hajiabadi relation hydraulic aperture leakage pathway ARMA 24 951 Leakage Pathways in Diatomite Formation: A Study of Overburden Dynamics and Fracture...

... for by the increases in compressive strength with lateral confinement. In comparison to CSM model, the model predictions require three extra parameters: confinement, the simplified cavity shape that relates to the cutter shape and the ratio between damage zone size and cutter spacing. The three parameters can...

... as function of measured axial and radial deformation. It was possible to characterize a power fit nondimensional coefficient of the relation between permeability and porosity variations during loading conditions. Such coefficient, despite presenting higher values during stress hold steps (order 10 to 100...

... in the principal stress space. Therefore, the polyaxial criterion can be defined as a simple relation between maximum and intermediate stresses. We propose to define such an empirical criterion as a second order polynomial which fits trends observed in polyaxial laboratory strength data. INTRODUCTION Knowledge...

... ABSTRACT In 4D Seismics, the dilation factor has become a very interesting rock property in recent years due to its simplicity in linearly relating rock deformation with acoustic velocity variation or time-lapse time shift. Its lab-scale characterization through coupled acoustic-mechanical...

... of packers and sleeves in relation to the reservoir formation strength and sandface flow contributions. The above sanding mechanism and practical ramifications are illustrated through historical sanding responses in 11 horizontal wells in an oil field in the UK North Sea. The reservoir formation...

... in fractured zones and faults under different environmental conditions such a normal pressure, temperature, water content, loading rate. reservoir geomechanics relation upstream oil & gas reservoir characterization characteristic engineering thickness hydraulic fracturing aydan criterion...

... through this suggested method. The simple iterative procedure based on the least square method was suggested. While suggested method works best for inclined cores in determining five independent elastic constants, horizontally or vertically layered cores require the empirical relation to determine...

... properties thus forms an applicable basis for medium characterization. We propose a method to characterize fracture apertures with their stress-dependent flow-elastic relations. The dependencies of various flow and elastic properties in single rough fracture hosting rock, on aperture distribution and normal...

... predictive estimation of fracture permeability after slip. The proposed relations link fracture length, shear displacement, fracture apertures, hydraulic apertures, and fracture permeability. We consider both fracture creation and the re-activation of existing fractures that have been infilled by minerals...

..., tensile strength, density, brittleness and Cerchar abrasivity index were carried out on a rock specimen. Then relations between measured intact rock properties and measured cutting force via LCM tests were examined. It is found that the intact rock properties could be employed to estimate cutting force...

...-specific constitutive equations relating strains to stresses for hydrostatic, uniaxial and triaxial tests and arrange these into a system of equations that are readily inverted for the full set of nonlinear elastic moduli. With measured static third-order elastic constants, geomechanical applications...

... upstream oil & gas time duration reservoir characterization structural geology relation shale oil reservoir rock oil shale mechanics geomechanics symposium experiment shale rock fracture closure creep deformation specimen creep creep property deformation fracture width fracture creep...

... jiménez martínez injectivity hydraulic fracturing relation injection pressure injectivity enhancement hydraulic stimulation damage zone characterization ARMA 21 1932 Injectivity Enhancement of Freiberg Gneiss by Hydraulic Stimulation Jiménez Martínez, Victoria Alegría Ruhr-Universität Bochum...

.... production control flow in porous media reservoir characterization reservoir surveillance upstream oil & gas fluid dynamics production monitoring multiphase flow reservoir geomechanics hydraulic fracturing relation two-phase flow water saturation soil column single-phase flow pore pressure...

... ABSTRACT: It is well recognized that injecting CO 2 in methane-saturated coal seams can initially decrease the injectivity, followed by a permeability rebound as gas pressure increases. Studies showed that such permeability change is related to the adsorption-deformation coupling which...

... in the oil-saturated sample, and even smaller in the brine-saturated sample. It was even smaller in the dry sample. It appears that in the liquid-saturated plugs, the AE level is monotonically related to the acoustic impedance of the pore fluid – the smaller the impedance the higher the AE. It does...

... itself, but have little effect on those in the farther strata. Upstream Oil & Gas finite fault network Reservoir Characterization contact surface relation pore pressure information situ stress stress measurement Artificial Intelligence geometric model reservoir geomechanics...