... reservoir geological subdiscipline permeability geology flow in porous media gas permeability fluid dynamics united states government reservoir geomechanics coefficient effective stress coefficient shear displacement granite sample dependency biot effective stress coefficient rock matrix gas...

... sandstone reservoir characterization engineering rock engineering granite sample wet granite sample strain rate asia government igneous rock rock sample rock mechanic strength shpb test reservoir geomechanics dynamic mechanical behavior dynamic mechanical property mining science rock...

... ABSTRACT Geothermal formations are generally fractured using water-based fracturing fluid, which has several issues, such as high-water consumption and environmental issues. In this study, a waterless stimulation method was used on granite samples. Studying the optimum injection time of LN 2...

... on granite samples after cyclic heating and water-cooling treatment. Further, characteristics of microscopic thermal cracking was investigated by SEM observation to reveal the temperature- dependent response of macro mechanical properties. Experimental results show that uniaxial compression strength, Young s...

... of loading until the complete failure using the Phantom high-speed camera under uniaxial compression. The various stages of cracking process were captured with high resolution including crack initiation, coalescence and failure. Finally, it was found that the granite samples have the most violent failure...

... ABSTRACT: This paper aims to investigate the effect of thermal shock on the hydraulic fracturing process in hot dry rock. Five granite samples with the dimensions of 80×80×100 mm 3 were preheated (slow heating and rapid water cooling) for laboratory hydraulic fracturing experiments. P...

... nitrogen fracturing in geothermal reservoirs, especially in hot dry rock reservoirs. Reservoir Characterization Upstream Oil & Gas structural geology Engineering granite sample hydraulic fracturing heating temperature ln 2 liquid nitrogen specimen Poisson p-wave velocity Fluid...

... ABSTRACT: To understand the effect of cold water injection on the mechanical properties and brittleness of rock, a series of mechanical tests were performed on granite samples. Firstly, granite samples were slowly heated to a series of target temperatures and then rapidly cooled down using...

... ABSTRACT: Hydraulic fracturing tests on cubic granite samples with a side length of 50 mm were conducted under a true tri-axial test equipment combined with acoustic emission (AE) monitoring. The applied three principal stresses are 20 MPa ( s v), 20 MPa ( s H) and 10 MPa ( s h...

... of technological parameters in the process of liquid nitrogen fracturing hot dry rocks. Wellbore Design fracture toughness kuruppu md hydraulic fracturing reservoir geomechanics granite sample Reservoir Characterization experiment Upstream Oil & Gas mech rock eng hot dry rock treatment...

... as a ductile medium. Accurate prediction of such behavior may be crucial when assessing the long-term stability of these underground structures and the stress state around faults. We conducted triaxial creep experiments using thermally-fractured granite rocks. Westerly granite samples were heated to a maximum...

... crack growth loading rate dependency rock sang-ho cho toughness granite sample fracture toughness test specimen granite hydraulic fracturing sndb sample dynamic test limestone plane yeongju granite notch dynamic fracture toughness loading rate fracture toughness upstream oil...

... containing granite sample inside of a load frame. Hydraulic injection was performed through a steel casing to a target openhole interval using a dual Teledyne ISCO 100DX syringe pump system. Injection well diameter and openhole fracturing interval diameter were approximately 10 mm and 6 mm, respectively...

... fractures and stress conditions. geothermal reservoir mechanism sigma analysis result Upstream Oil & Gas acoustic emission true-triaxial apparatus Artificial Intelligence granite sample stimulation waveform source mechanism hydraulic fracturing ae event source location event source...

... to characterize tensile fracture AE signals. All concrete specimen sizes were approximately 45x60x140 mm3 beams. Granite specimen sizes were 40x50x240 mm3 beams. Three point and four point loading methods were used on the concrete and granite samples respectively in order to generate maximum beam moment...

... friction in the granite sample-exhibiting smaller S-wave amplitudes increases for larger shear stresses-and a low-friction interface in the aluminum sample-showing sudden increases in S-wave amplitudes once the surface starts to slip under high shear stresses. As we demonstrate in this paper, for relating...

..., drilling of rocks, oil and water stimulation, casting cleaning, and recycling of products such as concrete, electronic devices and electric appliances [7-9]. hydraulic fracturing granite sample current flow path mineral structural geology rock constituent disintegration rock sample Upstream...

... powers of 200 watts or less, specifically 8 of the 20 samples of greenstone, 19 of 25 granite samples and 2 of 3 norites. The specific kerfing energies ranged from 50 to 150 J/cm z. The third norite sample fractured after removal of the load at the location of a major flaw; relatively low and constantly...