... subdiscipline fracture conductivity acid etched instrument stability uniaxial compressive strength experiment corrosion acid-etched fracture attenuation reservoir characterization fracture dolomite calcite acid etched fracture ARMA 24 474 Experimental study on wall stability of acid-etched...

... a custom-made split Hopkinson pressure bar (SHPB) test system, aiming to quantitatively determine dynamic stress wave behaviors across fluid-filled rock fractures. The SHPB test data were processed to estimate transmission and reflection coefficients, and wave attenuation factors for quantifying dynamic...

... structure and behavior under cyclic loading conditions can be used to predict ground vibration behavior and mitigate its effect. This study investigates key physics in cyclic dynamic wave propagation in rocks and provides fundamental results on dynamic wave propagation and attenuation in phyllite...

... international journal fracture couplant flaw propagation sensitivity agaria marble specimen journal attenuation pyrak nolte mhz rock mechanic transmission ARMA 24 380 Evaluation of the sensitivity of compressional waves to assess the presence of a macroscopic flaw in a pre-fractured Agaria marble...

..., and attenuation of the elastic waves generated by physical vibration are the main factors affecting the effect of production enhanced by physical vibration. In this paper, the Biot model is improved. Firstly, the influence of elastic wave on reservoir physical properties is considered, and the change of viscosity...

... on the simulation outcomes. resource in place estimate mineral geologist modeling & simulation estimates of resource in place frequency propagation geology conductor deposit reservoir characterization ground penetrating radar vms deposit conductivity attenuation volcanogenic massive...

... pressure wave downstream pipeline drilling measurement valve pressure drop asia government modeling & simulation mwd flow area beijing characteristic pulser mushroom head numerical simulation positive pulse generator attenuation displacement boundary condition equation frequency...

... results from laboratory experiments in which a signal of AE is transmitted through the material to measure the arrival time at different sensors located in the sample. The objective of the model is to better understand the physics of wave propagation and attenuation in the medium, which cannot be directly...

... in the underground mine environment. AE measurements indicate that AE signal attenuation from fractures is more severe than due to backfill and in presence of fractures, backfill did not create a favorable environment for AE wave propagation toward receivers. AE signal arrival time to receivers mainly depends...

... assumption attenuation wave propagation united states government signal travel time ae signal travel time arrival time velocity model sensor 2 ARMA 23 345 Seismic source wave propagation analysis using laboratory AE monitoring system Madenova, Y.1,2 1Nazarbayev University, Astana, Kazakhstan...

... metals & mining cement technology suorineni determination cube diameter accuracy effect experiment strategy attenuation acoustic emission calculation ARMA 22 13 Strategy towards accurate location of seismic events sources in mining environments: Effect of voids and backfill...

... attenuation is mostly limited to laboratory experiments. Interpreting the effects of fractures on borehole acoustic measurements often requires numerical modeling. This paper quantifies the effects of hydraulic fractures perpendicular to the well axis on shear and Stoneley borehole acoustic measurements via...

... injection, from the repeated S-wave VSP measurements. vertical seismic profile upstream oil & gas borehole naville log analysis vsp data well logging pore pressure s-wave birefringence variation fracture anisotropy reservoir characterization attenuation corinth rift laboratory...

... Characterization subvertical foliation acoustic emission mechanical property reservoir geomechanics Upstream Oil & Gas strength attenuation anisotropic rock preferential orientation anisotropy loading foliation azimuthal orientation failure plane migmatite dip direction fracture ARMA 19...

... the risks caused by rockfalls. The attenuation rule model proposed for this mine presents a good equivalence of 93% with the correlation coefficient. Defining the minimum vibration level for forming instable blocks is possible to determine the blast influence, turning possible to manage the project from...

... and on-site vibration testing, it is found that there is a positive correlation between rock mass cumulative damage and attenuation index a. By analyzing the relationship of energy loss and the particle vibration velocity during blasting wave propagation, the relationship of equivalent rock mass porosity...

... of phenomenological understanding. Upstream Oil & Gas dimension image understanding attenuation Artificial Intelligence segmentation Simulation Imaging prediction effective medium model sandstone integration heterogeneity numerical simulation length scale Reservoir Characterization...

... materials frequency calibration application vibrometer Reservoir Characterization attenuation assessment amplitude ultrasonic pulse velocity measurement wavelength specimen transducer laser vibrometer separation ARMA 17-0817 Geometric Effects on Ultrasonic Pulse Velocity Measurements...

... stress while the beginning of unstable microcracking is called the crack damage stress. This laboratory study presents a new technique for estimation of crack initiation threshold. The technique is based on the interpretation of measured ultrasonic attenuation. The attenuation method was tested...

.... These fractures, when monitored through active ultrasonic signals, tend to act as low-pass filters that attenuate the waveforms. In present study, active seismic monitoring was conducted on Lyon’s Sandstone specimens while they were subjected to uniaxial compression. A Lab-view controlled seismic system...