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Keywords: experiment
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Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0478
... unconsolidated sands, the type of fracturing fluid used were silicone oil (85 mPa·s) and cross-linked gel (200 mPa·s), while for the chemical injection was epoxy resin as Table 3. Table 3. Characteristics of Epoxy resin of the experiment used in this paper. 2.4. Experimental apparatus. The hydraulic fracturing...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0021
... ABSTRACT: A laboratory hydraulic fracture experiment was conducted on a Montney shale specimen under the conventional triaxial compressional stress condition. Acoustic emissions (AEs) were recorded using 7 piezoelectric transducers throughout the duration of the test to investigate the...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0087
... experiments, the fracture geometry was reconstructed and the acoustic emission was used to judge the fracture propagation path. The results of the study would help to better understand the natural fracture effect and give good guidance to the fracturing optimization. 2. EXPERIMENTAL PREPARATION AND SCHEME 2.1...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0057
.... 6. CONCLUSIONS The following conclusions are drawn from the experimental results: (1) During the hydrostatic experiment from Stage 2, the v increased from an increasing gradient to an almost constant gradient when the Pc increased. The v decreased minimally at the beginning of the application of...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0112
... acre (Williams, 2007). Green River shale is major deposit of the Piceance Basin hosting the world s largest oil shale deposits. 2. EXPERIMENTAL METHODS Laboratory experiments and techniques in this study are designed to characterize and evaluate the petrophysical properties of Green River Shale samples...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0238
... will demonstrate whether this is an actual trend or possible experimental variability. 4. CONCLUSIONS Sand production experiments have been performed in a a true triaxial test system on Castlegate sandstone specimens to investigate the effect of anisotropy on sand onset and sand rate. The results of...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0246
... ABSTRACT: We experimentally investigate the effect of the pore fluid on AE in four sandstone plugs cored from a homogeneous slab. These plugs were fully saturated with brine, mineral oil, and hexane, while one of them remained dry. AE level was highest in the hexane-saturated sample, smaller...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0240
... methods. 3.1. Experimental Tests Fallahzadeh et al., 2015 used 10 cm and 15 cm cubical samples in their experiments. In the 10 cm samples, a 6.5 mm hole was created at the center of the samples. A 30 mm long solid steel rod with 3 mm diameter was placed at the bottom of the hole. A 300 mm steel pipe with...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0223
... EXPERIMENTS 3.1 Experimental Site The experimental site Chant Sura (46.74625 N, 9.96720 E) is located near Davos, Switzerland, on the Flüelapass road connecting Davos with the lower Engadin (see Figure 2). The experimental slope starts at 2380 m a.s.l., yielding a traveling path over a typical alpine meadow...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0334
... linear acidizing problem theoretically and experimentally. Experimentally, linear acidizing tests were performed in Mons chalk, a high porosity analogue of North Sea reservoir chalk. In the experiments the critical injection velocity for wormhole formation at minimum acid injection was obtained...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0248
... seismicity is time dependent. Early experiments focused on slip events that occurred within seconds of an increase in fluid pressure. Further experimentation reveals that the fluid pressure can take minutes to hours to diffuse, based on fault permeability, storage coefficient, and applied normal stress...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0326
... experiments were performed by varying maximum cyclic stress levels and the test specimens were not completely destroyed to achieve the purpose of controlling rock damage. The rock porosity was measured by nuclear magnetic resonance (NMR) technique before and after experiments. The experimental results show...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0140
... triggered during multiple fault activation. Our in-situ experiments and models clearly indicate that fluid injection induces significant aseismic slip with associated stress perturbation through slow failure and permeability increases that contribute to trigger micro-seismicity within the fault volume...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0145
... from a mining operation in the Illinois basin. The top and bottom parts of the cores were trimmed, and the middle section was polished and used for the flow experiments. 2.2 Experimental Setup The critical part of the experimental setup was a triaxial cell, capable of confining the sample up to 10,000...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0354
... transducers. Samples were sheared up to the post peak and steady state condition. 2. LABORATORY EXPERIMENTS The experimental setup used in this study is shown in Figure 1. This configuration consists of a horizontal loading frame to provide the desired amount of normal stress, a vertical loading frame to...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0339
..., X., Yang, Y., Zhao, C., Connell, L. D., et al. (2014). Experimental study and modelling of methane adsorption and diffusion in shale. Fuel, 117, 509 519. 30. Zhao, W., Cheng, Y., Jiang, H., Wang, H., & Li, W. (2017). Modeling and experiments for transient diffusion coefficients in the desorption of...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0280
... the pore characteristics of raw and freeze-thawed coal samples. The high-pressure adsorption experiment was conducted following the volumetric method to measure the sorption behavior and diffusion coefficient of the same coal samples. The experimental results were then presented with emphasis on the...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0332
... interaction mechanism between the hydraulic fracture and natural fractures, we introduce cuttings and core experiment results to study the brittleness and rock fracture energy. Coupling with the reservoir logging fracability data and the natural fracture data, the comprehensive fracability evaluation model is...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0259
... experimental protocols After the probe is arranged, the acoustic wave propagation velocity of different monitoring paths before the water injection is taken as the initial velocity v2, and the average velocity v1 of the coal sample after water injection is determined through multiple experiments. Water...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0268
... necessary to determine the formation mechanical properties through laboratory experiments and use them as basic parameters for calculation. However, limited core experiments are difficult to fully reflect the formation characteristics, and affect the accuracy of the results. Therefore, based on experimental...

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