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Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1135
... artificial intelligence pore pressure reservoir geomechanics reservoir simulation cohesion database subsurface storage injection flow in porous media upstream oil & gas material property international journal mpa fault zone fluid dynamics elastic strain fault core variation boundary...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1137
..., as a proxy for shale porosity, is well constrained, the pore pressure prediction may be in error because of the lithological variation in shale composition. Presence of solid organic matter in excess amounts in shale formations that have never been exposed to the pressure-temperature conditions in the oil...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1241
... ABSTRACT: We carried out a geomechanical study of three, co-located wells in the DJ Basin of Colorado, one each in the Niobrara A, Niobrara C and Codell sandstone, to investigate how stress variations of the least principal stress with depth affect vertical hydraulic fracture growth and shear...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1044
... as the variation of dam saturation line under normal operation condition and flood condition. The results suggested that, the tailings particles gradually became finer along the dry beach towards the reservior and the particle size decreased slightly with the depth. The permeability coefficient of tailings...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1063
... stress-density, and pore pressure-neutron porosity have been used to establish the overpressure mechanism. Wells are correlated on a regional scale to ascertain the variation of lithofacies corresponding to the onset of overpressure. Variation of geothermal gradients is also studied for Panna...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1680
... strata with 30 m depth variations in the Sichuan Basin were obtained. Two sets of tri-axial compression experiments before and after soaked were compared. Three quantitative indicators were used to evaluate the macroscopic fracture characteristics of samples: the 3D scanner was used to scan the main...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1864
... criterion for this purpose due to variations in mining conditions worldwide. This paper presents a generic probabilistic risk assessment (PRA) framework developed to estimate the probability of rock bursts and excessive gas emissions by incorporating the inherent uncertainty involved in a typical longwall...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1229
... usually operate at acoustic frequencies by monitoring phase changes in Rayleigh backscattered light from pulses transmitted down an optical fiber. These phase changes occur due to small strain and temperature induced variations in the refractive index of the fiber. Most systems based on Rayleigh sensing...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1249
... that the change in porosity, uniaxial compaction and pore volume compressibility coefficient measured using the new technique show excellent agreement with that measured utilizing conventional method, i.e., radial deformation transducer. In addition, the measured variation in sample diameter is found to be well...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1785
... as the slip-interface model (Schoenberg 1980). It is used for both analytical and numerical calculations (Coates and Schoenberg 1995). upstream oil & gas variation geophy energy coefficient frequency pulse wave amplitude waveform reservoir characterization frequency component single...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1568
... ABSTRACT: Soil-rock mixtures (S-RMs) are highly heterogeneous media which are frequently encountered in geotechnical engineering. The stiffness properties of the system may differ because of the variations in the volume ratio of rock to soil. An Accurate prediction of the stiffness properties...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-2025
... ABSTRACT: Variations in the direction of the maximum horizontal compressive stress (SHmax) may significantly change the potential of faults to slip, especially if the SHmax orientation changes over relatively small distances. To estimate the potential for slip on mapped faults in the Delaware...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1454
... to calibration, limiting their applicability. Therefore, the accurate prediction of ROP is still a problem to be solved. artificial intelligence rop prediction variation machine learning rate of penetration deep learning model prediction rop neural network neural network model prediction...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1762
... observations and operational data, collected from the two highly instrumented injection and observation wells at Aquistore which were specifically drilled for CO2 storage. In this paper, we demonstrate that hydro-thermo-mechanical (THM) processes are involved in the noted variation of injectivity...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1584
... to measure pore pressure in a natural gas field. Pore pressure variation changes the physical-geophysical properties of the rock, which can have an effect on seismic wave properties, therefore we can use seismic data to estimate pore pressure variation. A model based seismic inversion technique using wavelet...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1590
... design reservoir geomechanics rock mech rock eng engineering variation williams martin crack initiation ratio porosity hydraulic fracturing mechanics geomechanics symposium evaluation university poisson serati rock mechanics crack initiation stress tensile strength ARMA 21 1590...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-2044
... fracturing calculation reservoir geomechanics anellipticity prediction barrier prediction anisotropic model stress polygon stress difference strain component gallardo-giozza determination structural geology variation horizontal stress stress barrier stress regime anisotropy espinoza ARMA...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1694
... cement degradation operation upstream oil & gas cement cement-formation interface wellbore design cement failure downhole condition mpa reservoir characterization reduction interface degradation mechanics geomechanics symposium variation cement plug wellbore system tol bulk...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1202
... predict the variation of the least principal stress in a vertical well of the Perth Basin. Creep response of clay- and carbonate-rich shales have been recorded in the laboratory for a duration of ~ 6 hours under simulated in-situ stress conditions. A simple power-law captures the primary creep response...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1147
... in different directions is difficult in practice. artificial intelligence brazilian test elastic constants loading plate reservoir characterization load test variation specimen loading single specimen elastic parameter reservoir geomechanics heterogeneity strain gauge numerical iteration...

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