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Keywords: heterogeneity
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Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1113
.... The conventional logging parameter methods have significant errors because of the serious heterogeneity of conglomerate formation. An experimental study is conducted to investigate the correlation between the rock drillability of the conglomerate and its components. The bottom hole cores have been collected which...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1245
... physics procedure to estimate porosity and absolute permeability and compare the pore-scale heterogeneities in different core samples. From the analyses that is evident that permeability can vary in even short distances of sampling in an unconventional play, such as the Bakken Fm. Therefore, assuming...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1250
... as the interaction of the blocks with adjacent blocks (contact properties). For rocks with more than one mineral (i.e. block) type, there exists more than one type of contact between blocks, each of which requires a different set of input parameters. Little is known about the effect of heterogeneity of the contact...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1394
... ABSTRACT: Material heterogeneity is commonplace in rock masses, and thus it is vital to investigate its influence on hydraulic fracture propagation in tight reservoir rocks. Here, based on the combined finite-discrete element method, two series of models with uniformly-distributed and Weibull...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1769
... uncertainty cement and bond evaluation heterogeneity prediction synthetic log unconventional resource technology conference ARMA 21 1769 Machine learning framework to generate synthetic cement evaluation logs for wellbore integrity analysis Santos, L. and Dahi Taleghani, A. The Pennsylvania State...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1145
...). Ajibose et al. (2013) have experimentally studied the matter under dynamic loading and showed the forcepenetration responses for conical and spherical inserts under atmospheric pressure. drilling operation cone impact result structural geology heterogeneity impact energy bit selection...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1915
.... As a kind of geological material, heterogeneity is one of the basic characteristics of rock. The heterogeneity has a great influence on the mechanical properties of rock and its mechanical behavior under load. In the experimental study of this paper, it is also found that the heterogeneity of rock has...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-2056
... ABSTRACT: The presence of naturally developed collapse breccia pipes poses a risk for subsurface development of natural resources in underground excavations (wellbores, shafts and mines). These features introduce heterogeneities affecting the fluid flow and mechanical behavior...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1415
... fracturing experiments using analog-rock samples that were constructed with controlled heterogeneity for repeatable experiments. Fluids of different viscosities were injected at various volumetric rates to investigate their controls on hydraulic fracture patterns. We observed three distinct phenomena...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-2010
... Abstract This paper aims to discuss recent studies on methods used to capture heterogeneity within a reservoir undergoing hydraulic fracturing treatment and their implication on modelling of fracture propagation. In highly laminated reservoirs with soft and/or weak layers capturing...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1147
... in terms of their accuracy and heterogeneity. A soft loading plate was made by 3D-printing in order to avoid the singularity of the stress at the edge of the concentrated load. When the estimation based on a concentrated load test with a single specimen was not satisfactory, the Brazilian test of a sample...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0305
... can be regarded as the major causative factor that increases the rock strength. The tighter compaction in response to thermal treatment is a manifestation of the dependency of rock strength on rock texture. As a result, more heterogeneous rock texture may lead to a higher degree of strengthening...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0339
... on BET multilayer theory, specific surface area estimated by water vapor sorption is apparently larger than that by low pressure nitrogen adsorption, possibly due to the complex surface chemistry and water vapor sorption heterogeneity in shale. The heat of adsorption decreases with the water content...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0467
... itself, but have little effect on those in the farther strata. Upstream Oil & Gas reservoir geomechanics Reservoir Characterization relation pore pressure finite fault network orientation heterogeneity Artificial Intelligence geometric model contact surface situ stress calculation...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0415
... to larger heterogeneities” and incorporates elastic anisotropy of any type caused by preferential orientation of fractures. Evidence for fractures at the core and log scales are provided by different techniques commonly used for the analysis including electronic and optical microscopy, and computer...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1556
... ABSTRACT: A 3D grain-based model (3D-GBM) based on the tessellated Voronoi technology is proposed in this current work using the three-dimensional particle flow code (PFC 3D ). A dimensionless heterogeneity index is introduced to quantitatively express the spatial distribution of grain shape...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1833
... laboratory test Reservoir Characterization log analysis geomechanical characterization tight sandstone Argentina characterization Upstream Oil & Gas heterogeneity mechanical property Neuquen Basin structural geology strength coefficient determination correlation plug unconfined...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1848
... volume and pressure distribution over the domain. It also leads to consider high heterogeneity in reservoir properties such as permeability, porosity, and compressibility in a robust and efficient way. In this study, we show the application of FMM to coupled flow and geomechanics. We take one-way...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1727
... ABSTRACT: The uncertainties related with spatial variability and heterogeneities, naturally present in rock masses, play an important role in geotechnical engineering practice. A more accurate assessment and characterisation is increasingly in need due to their impact on the mechanical...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1899
... ABSTRACT: Optimal design of fluid-driven fracture networks to decrease the environmental impact of hydraulic fracturing operations requires a thorough understanding of the interaction between fluid-driven fractures and heterogeneous geomaterials from both numerical and operational standpoints...

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