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Keywords: variation
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Proceedings Papers

Paper presented at the 57th U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2023
Paper Number: ARMA-2023-0118
... methods in modeling large deformations and fracture propagation, and is used to simulate the solid phase, whereas FDM has been utilized for studying the variation of pore pressure in the fluid phase. Rate of change of porosity, rate of change of velocity, strain rate and stress rate are calculated...
Proceedings Papers

Paper presented at the 57th U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2023
Paper Number: ARMA-2023-0054
... 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...
Proceedings Papers

Paper presented at the 57th U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2023
Paper Number: ARMA-2023-0186
... mechanical property variation geology granite igneous rock drillability drillability grade value longitudinal wave velocity temperature heat treatment mineral composition sample heated young high temperature investigation stress-strain curve ARMA 23 186 Experimental investigations...
Proceedings Papers

Paper presented at the 57th U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2023
Paper Number: ARMA-2023-0170
... pressure and variable internal pressure can better reflect the pressure variation properties of the actual reservoir. Many researchers have applied this method to the study of stress sensitivity (Chalmers et al., 2012; Ghanizadeh et al., 2014; Hou et al., 2017; Zeng et al., 2017). Reyes and Osisanya (2002...
Proceedings Papers

Paper presented at the 57th U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2023
Paper Number: ARMA-2023-0182
.... Despite the fact that they may be measured, they are localized over some limited and small area. For computing these parameters and their variations "elastic inversion" of surface seismic data has been performed, which is a geophysical process used to recover the constituent rock properties of the earth...
Proceedings Papers

Paper presented at the 57th U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2023
Paper Number: ARMA-2023-0418
... on the variation of trace density, derived by the end-point estimator, using analytic and numerical approaches. We employ rectangular, square, and circular windows for sampling the trace density of fractures with various dip angles using Monte Carlo simulations. We find that, regardless of window shape...
Proceedings Papers

Paper presented at the 57th U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2023
Paper Number: ARMA-2023-0434
... (>450 m) in Virginia and evaluates the geologic conditions that lead to areas with high seismic event activities (> 1 M L ) during mining of longwall panels. Two pseudo two-dimensional models of areas with high and low seismic event activities are constructed in 3DEC software. The variation...
Proceedings Papers

Paper presented at the 57th U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2023
Paper Number: ARMA-2023-0441
... in-situ and laboratory tests have investigated the variation of mechanical and hydraulic properties of rock under changing temperatures, the effect of temperature variation on the rock seismic properties (e.g., elastic wave velocity, wave amplitude, wave frequency, and wave attenuation) is still...
Proceedings Papers

Paper presented at the 57th U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2023
Paper Number: ARMA-2023-0742
... applications. If the confining stress variation between rock layers represents one of the main reasons for fracture containment at depth, a contrast of fracture toughness can also lead to fracture containment. Fracture toughness contrasts are presents at different scales. They are due to lithological changes...
Proceedings Papers

Paper presented at the 57th U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2023
Paper Number: ARMA-2023-0827
... activities, nuclear waste disposal, and natural causes arising from tectonic movements. Such stress variations significantly impact the physical properties of rocks, particularly their porosity, permeability, and dynamic elastic properties. Given the practical applications associated with these effects...
Proceedings Papers

Paper presented at the 57th U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2023
Paper Number: ARMA-2023-0894
.... hydrocarbon reserves (EIA). Despite these huge reserves, less than 10% of the original oil in place (OOIP) can be technically and economically produced from these reservoirs using multistage hydraulic fracturing due to the low porosity and permeability, complex pore structure, and high variation...
Proceedings Papers

Paper presented at the 57th U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2023
Paper Number: ARMA-2023-0623
... diameter ultimate strength wall thickness variation thickness mise stress maximum stress mudstone formation collapse strength ARMA 23 623 Study on the Internal Pressure Strength of Perforated Casing in High Pressure Formation Yiqi Zou1, Lin Tao2, Nanxiang Liu1, Deli Gao1*, Wenlong Li2, Xuyue...
Proceedings Papers

Paper presented at the 57th U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2023
Paper Number: ARMA-2023-0737
... and on evolution of fracture geometry, porosity, and permeability. The results show that the coupled physicochemical process is strongly dependent on the Pe and Da. While similar trend of the permeability-porosity variations is obtained for the two fractures at the same Pe and Da numbers, the evolution of fracture...
Proceedings Papers

Paper presented at the 57th U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2023
Paper Number: ARMA-2023-0654
... disposal (Espinoza and Santamarina, 2011) or geothermal projects (Buijze et al., 2019) may generate seismic events. Moreover, the thermal effect due to the injection of a fluid with lower temperature than the formation temperature leads to additional stress variation that may reduce the fault resistance...
Proceedings Papers

Paper presented at the 57th U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2023
Paper Number: ARMA-2023-0660
...). geology neural network upstream oil & gas hyperparameter well logging deep learning europe government artificial intelligence log analysis geologist united states government geological subdiscipline porosity volve oil field zhang estimator norway government variation reservoir...
Proceedings Papers

Paper presented at the 57th U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2023
Paper Number: ARMA-2023-0469
... government hydraulic pressure geologist united states government reservoir characterization upstream oil & gas hydraulic fracturing geological subdiscipline mean value instrumented block erosion protrusion rock mass fluctuation variation water entry uplift spillway model annandale...
Proceedings Papers

Paper presented at the 56th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2022
Paper Number: ARMA-2022-2335
... ABSTRACT: Hydraulic fractures propagate when fluid pressure overcomes the minimum horizontal stress. Variations of the minimum horizontal stress with depth determine where hydraulic fractures can grow and what orientation of faults will slip. Here, we use a stress model and field data from...
Proceedings Papers

Paper presented at the 56th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2022
Paper Number: ARMA-2022-2356
... mechanic mpa manikin diversion tunnel variation diversion tunnel numerical simulation rock engineering tunnel perimeter ARMA 22 2356 Assessing the performance of various initial support systems for tunneling in swelling clay A case study from the Manikin diversion tunnel in Indonesia Prassetyo...
Proceedings Papers

Paper presented at the 56th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2022
Paper Number: ARMA-2022-2125
... materials (Ding et al., 2006). reservoir geomechanics inclination civil engineering structural geology engineering isotropic plane poisson specimen serati uniaxial compression young variation williams mutaz rock mechanic upstream oil & gas reservoir characterization determination...
Proceedings Papers

Paper presented at the 56th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2022
Paper Number: ARMA-2022-2135
... heterogeneity regime aberystwyth university rock mechanic geomechanics symposium fracture toughness variation application fracture suarez-rivera well logging toughness heterogeneity fracture evolution hydraulic fracture evolution correspond approximation mishuris averaging ARMA 22 2135...

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