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Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1226
... unplanned dilution upstream oil & gas classification symposium dilution dataset classifier application dilution graph open stope design university american rock mechanics association adoko ARMA 21 1226 A comparison of prediction and classification models of unplanned stope dilution...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1237
... interpretation method. Additionally, the advantages of this fully automated workflow against the traditional model-based core-log integration method are demonstrated through these field data applications. 1. Introduction Geomechanics plays an important role in the exploration and development of oil and gas...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1299
... and economical sustainability. social responsibility tailing nelson sustainability oxide esg earth resource metals & mining upstream oil & gas colorado school composition characteristic basalt fiber glass fiber variability fiber mineralogy application waste material viscosity...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1329
... strength shale application shear strength gradient electro-osmosis anode effective stress pore pressure specimen water content voltage electro-osmotic permeability mpa isotropic test enhance shale barrier skomedal cathode deformation electro-osmotic treatment permeability ARMA 21 1329...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1355
... formation, to improve the connectivity and conductivity of the fracture network. Liquid nitrogen (LN 2 , -196°C) is an ideal working fluid for cryogenic fracturing. McDaniel et al. [3] and Grundmann et al. [4] conducted an experimental investigation and field application with LN 2 to demonstrate...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1395
... of data from three-component sensors can enhance the classification of multiple coupling waveforms, it is of great significance to investigate their applicability in acoustic emission analysis of fracture propagation in rock failure experiments. In this paper, we use a new type of three-component sensors...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1409
... ABSTRACT: Acoustic measurements are vital for geomechanical applications to design safe mud weight window, estimating rock strength parameters, sand control, hydraulic fracturing, etc. There is usually a discrepancy between the ultrasonic lab and sonic log measurements due to the frequency...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1764
... ABSTRACT: Talara Basin is a complex faulted basin located in the Peruvian northwestern, being developed since the 1890s. However, wells recently drilled in certain areas in the basin were found with the original reservoir pressure. This work presents an application of properly supervised...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1795
... of crushed rocks are commonly used raw materials for production of geopolymers. Geopolymerized mine tailings have a wide application in building and construction industry. The compressive strength of geopolymer was extensively studied by many researchers; however, the tensile strength remains largely...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1189
...-specific constitutive equations relating strains to stresses for hydrostatic, uniaxial and triaxial tests and arrange these into a system of equations that are readily inverted for the full set of nonlinear elastic moduli. With measured static third-order elastic constants, geomechanical applications...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-2129
... ABSTRACT: All subsurface stress measurement methods available for deep subsurface applications are indirect and result in significant remaining uncertainty in the state of stress. Quantifying these uncertainties is critical for applications where the state of stress is a component of a risk...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-2141
..., surface modification and emulsification are used to disperse these grained silica. The liquid nano-silica with a median particle diameter of 162 nm can stay in stable for more than one year and it is convenient for field application. This kind of liquid nano-silica contains multiple functions due to its...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-2010
... measurements and observations are upscaled and/or homogenized to the element size. Naturally, toughness is one of the most delicate physical parameters to handle as application of the homogenization techniques are rather questionable here (Caiulo and Kachanov, 2010, Kachanov, 1994) and proposed averaging...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-2012
... rheological property completion equipment correlation drilling fluids and materials janeiro operation reliability fernande scenario reduction nanoparticle university carbonate schnitzler brazil application bop fracture ARMA 21 A-2012 Drilling and Completion Technologies for Pre-Salt...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-2027
... from laboratory experiments could be transferred to field applications. In this study, we address a number of challenges associated with transitioning from laboratory to the field. We use transfer learning and stacked generalization to investigate how the knowledge gained from one experiment could...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-2040
... to investigate the mechanisms that control wave velocity, dispersion, and attenuation (Zhai et al., 2020). In addition, though indirectly related to this work, modelling of flow through granular beds is common in chemical engineering applications (Carman, 1997). The Discrete Element Method (DEM) has been...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1180
... instability stability excavation application support pressure hong kong rock mass rock mass condition ARMA 21 1180 Discrete Fracture Network Approach in Ground Support Design Optimisation for Large Span Cavern in Jointed Rock Mass Haryono, I. S. Golder Associates (Hong Kong), Hong Kong, People s...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1967
... project risk, provide insights into reservoir behavior, and potentially forecast production. upstream oil & gas simulation dfn renewable energy stimulation phase prediction fracture aperture natural fracture hydraulic fracturing model prediction simplification application fracture...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1214
... favorable. However, using PDC bits in these types of rocks has been practiced in many laboratories and field applications. PDC bits that were specially designed for drilling granite and quartzite rocks have been studied by researchers in recent years. Several novel cutting structure enhancements have been...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1347
... of brittle materials. In this view, this paper presents an application of an innovative testing methodology named AUSBIT ( Adelaide University Snap-Back Indirect Tensile test ; patented in Australia) to control the cracking process of disc specimens under diametrical compression. This methodology uses...

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