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63 results on '"Makedonska, N."'

51. The EGS Collab project: Status and Accomplishments

Author

Kneafsey, T., Blankenship, D., Dobson, P., White, M., Morris, J. P., Fu, P., Schwering, P. C., Ajo-Franklin, J. B., Huang, L., Knox, H. A., Strickland, C., Burghardt, J., Johnson, T., Neupane, G., Weers, J., Horne, R., Roggenthen, W., Doe, T., Mattson, E., Ajo-Franklin, J., Baumgartner, T., Beckers, K., Bonneville, A., Boyd, L., Brown, S., Burghardt, J. A., Chai, C., Chakravarty, A., Chen, T., Chen, Y., Chi, B., Condon, K., Cook, P. J., Crandall, D., Dobson, P. F., Doughty, C. A., Elsworth, D., Feldman, J., Feng, Z., Foris, A., Frash, L. P., Frone, Z., Gao, K., Ghassemi, A., Guglielmi, Y., Haimson, B., Hawkins, A., Heise, J., Hopp, C., Horn, M., Horne, R. N., Horner, J., Hu, M., Huang, H., Im, K. J., Ingraham, M., Jafarov, E., Jayne, R. S., Johnson, T. C., Johnson, S. E., Johnston, B., Karra, S., Kim, K., King, D. K., Knox, H., Knox, J., Kumar, D., Kutun, K., Lee, M., Li, D., Li, J., Li, K., Li, Z., Maceira, M., Mackey, P., Makedonska, N., Marone, C. J., Mcclure, M. W., Mclennan, J., Mcling, T., Medler, C., Mellors, R. J., Metcalfe, E., Miskimins, J., Moore, J., Morency, C. E., Myers, T., Nakagawa, S., Newman, G., Nieto, A., Paronish, T., Pawar, R., Petrov, P., Pietzyk, B., Podgorney, R., Polsky, Y., Pope, J., Porse, S., Primo, J. C., Reimers, C., Roberts, B. Q., Robertson, M., Rodriguez-Tribaldos, V., Rutqvist, J., Rynders, D., Schoenball, M., Schwering, P., Sesetty, V., Sherman, C. S., Singh, A., Smith, M. M., Sone, H., Sonnenthal, E. L., Soom, F. A., Sprinkle, D. P., Sprinkle, S., Strickland, C. E., Su, J., Dennise Templeton, Thomle, J. N., Ulrich, C., Uzunlar, N., Vachaparampil, A., Valladao, C. A., Vandermeer, W., Vandine, G., Vardiman, D., Vermeul, V. R., Wagoner, J. L., Wang, H. F., Welch, N., White, J., White, M. D., Winterfeld, P., Wood, T., Workman, S., Wu, H., Wu, Y. S., Yildirim, E. C., Zhang, Y., Zhang, Y. Q., Zhou, Q., and Zoback, M. D.

52. Fracture and flow designs for the collab/SIGMA-V project

Author

Knox, H., Fu, P., Morris, J., Guglielmi, Y., Vermeul, V., Ajo-Franklin, J., Strickland, C., Johnson, T., Cook, P., Herrick, C., Lee, M., Bauer, S. J., Baumgartner, T., Blankenship, D., Bonneville, A., Boyd, L., Brown, S. T., Burghardt, J. A., Carroll, S. A., Chen, T., Condon, C., Cook, P. J., Dobson, P. F., Doe, T., Doughty, C. A., Derek Elsworth, Frash, L. P., Frone, Z., Ghassemi, A., Gudmundsdottir, H., Guthrie, G., Haimson, B., Heise, J., Herrick, C. G., Horn, M., Horne, R. N., Hu, M., Huang, H., Huang, L., Johnson, T. C., Johnston, B., Karra, S., Kim, K., King, D. K., Kneafsey, T., Kumar, D., Li, K., Maceira, M., Makedonska, N., Marone, C., Mattson, E., Mcclure, M. W., Mclennan, J., Mcling, T., Mellors, R. J., Metcalfe, E., Miskimins, J., Morris, J. P., Nakagawa, S., Neupane, G., Newman, G., Nieto, A., Oldenburg, C. M., Pawar, R., Petrov, P., Pietzyk, B., Podgorney, R., Polsky, Y., Porse, S., Roggenthen, B., Rutqvist, J., Santos-Villalobos, H., Schwering, P., Sesetty, V., Singh, A., Smith, M. M., Snyder, N., Sone, H., Sonnenthal, E. L., Spycher, N., Strickland, C. E., Su, J., Suzuki, A., Ulrich, C., Valladao, C. A., Vandermeer, W., Vardiman, D., Vermeul, V. R., Wagoner, J. L., Wang, H. F., Weers, J., White, J., White, M. D., Winterfeld, P., Wu, Y. S., Wu, Y., Zhang, Y., Zhang, Y. Q., Zhou, J., Zhou, Q., and Zoback, M. D.

53. EGS Collab Earth modeling: Integrated 3D model of the testbed

Author

Neupane, G., Podgorney, R. K., Huang, H., Mattson, E. D., Kneafsey, T. J., Dobson, P. F., Schoenball, M., Ajo-Franklin, J. B., Ulrich, C., Schwering, P. C., Knox, H. A., Blankenship, D. A., Johnson, T. C., Strickland, C. E., Vermeul, V. R., White, M. D., Roggenthen, W., Uzunlar, N., Doe, T. W., Ajo-Franklin, J., Baumgartner, T., Beckers, K., Blankenship, D., Bonneville, A., Boyd, L., Brown, S., Brown, S. T., Burghardt, J. A., Chen, T., Chen, Y., Condon, K., Cook, P. J., Crandall, D., Doe, T., Doughty, C. A., Elsworth, D., Feldman, J., Foris, A., Frash, L. P., Frone, Z., Fu, P., Gao, K., Ghassemi, A., Gudmundsdottir, H., Guglielmi, Y., Guthrie, G., Haimson, B., Hawkins, A., Heise, J., Horn, M., Horne, R. N., Horner, J., Hu, M., Huang, L., Im, K. J., Ingraham, M., Jayne, R. S., Johnston, B., Karra, S., Kim, K., King, D. K., Kneafsey, T., Knox, H., Knox, J., Kumar, D., Kutun, K., Lee, M., Li, K., Li, Z., Lopez, R., Maceira, M., Mackey, P., Makedonska, N., Marone, C. J., Mattson, E., Mcclure, M. W., Mclennan, J., Mcling, T., Medler, C., Mellors, R. J., Metcalfe, E., Miskimins, J., Moore, J., Morency, C. E., Morris, J. P., Nakagawa, S., Newman, G., Nieto, A., Oldenburg, C. M., Pan, W., Paronish, T., Pawar, R., Petrov, P., Pietzyk, B., Podgorney, R., Polsky, Y., Pope, J., Porse, S., Roberts, B. Q., Robertson, M., Rutqvist, J., Rynders, D., Santos-Villalobos, H., Schwering, P., Sesetty, V., Sherman, C. S., Singh, A., Smith, M. M., Sone, H., Soom, F. A., Sprinkle, P., Su, J., Dennise Templeton, Thomle, J. N., Vachaparampil, A., Valladao, C. A., Vandermeer, W., Vandine, G., Vardiman, D., Wagoner, J. L., Wang, H. F., Weers, J., Welch, N., White, J., Winterfeld, P., Wood, T., Workman, S., Wu, H., Wu, Y. S., Wu, Y., Yildirim, E. C., Zhang, Y., Zhang, Y. Q., Zhou, Q., and Zoback, M. D.

54. An introduction to the EGS Collab project

Author

Dobson, P., Kneafsey, T. J., Blankenship, D., Valladao, C., Morris, J., Knox, H., Schwering, P., White, M., Doe, T., Roggenthen, W., Mattson, E., Podgorney, R., Johnson, T., Ajo-Franklin, J., Bauer, S. J., Baumgartner, T., Bonneville, A., Boyd, L., Brown, S. T., Burghardt, J., Carroll, S. A., Chen, T., Condon, C., Cook, P. J., Doughty, C. A., Elsworth, D., Frash, L. P., Frone, Z., Fu, P., Ghassemi, A., Gudmundsdottir, H., Guglielmi, Y., Guthrie, G., Haimson, B., Heise, J., Herrick, C. G., Horn, M., Horne, R. N., Hu, M., Huang, H., Huang, L., Johnston, B., Satish Karra, Kim, K., King, D. K., Kumar, D., Lee, M., Li, K., Maciera, M., Makedonska, N., Marone, C., Mcclure, M. W., Mclennan, J., Mcling, T., Mellors, R. J., Metcalfe, E., Miskimins, J., Nakagawa, S., Neupane, G., Newman, G., Nieto, A., Oldenburg, C. M., Pawar, R., Petrov, P., Pietzyk, B., Polsky, Y., Porse, S., Rutqvist, J., Santos-Villalobos, H., Sesetty, V., Singh, A., Smith, M. M., Snyder, N., Sone, H., Sonnenthal, E. L., Spycher, N., Strickland, C. E., Su, J., Suzuki, A., Ulrich, C., Uzunlar, N., Vandermeer, W., Vardiman, D., Vermeul, V., Wagoner, J. L., Wang, H. F., Weers, J., White, J., Winterfeld, P., Wu, Y. S., Wu, Y., Zhang, Y., Zhang, Y. Q., Zhou, J., Zhou, Q., and Zoback, M. D.

55. The EGS Collab hydroshear experiment at the Sanford underground research facility - Siting criteria and evaluation of candidate sites

Author

Dobson, P., Kneafsey, T., Morris, J., Singh, A., Zoback, M., Roggenthen, W., Doe, T., Neupane, G., Podgorney, R., Wang, H., Knox, H., Schwering, P., Blankenship, D., Ulrich, C., Johnson, T., White, M., Ajo-Franklin, J., Bauer, S. J., Baumgartner, T., Beckers, K., Bonneville, A., Boyd, L., Brown, S. T., Burghardt, J. A., Chen, T., Chen, Y., Condon, K., Cook, P. J., Doughty, C. A., Elsworth, D., Feldman, J., Foris, A., Frash, L. P., Frone, Z., Fu, P., Gao, K., Ghassemi, A., Gudmundsdottir, H., Guglielmi, Y., Guthrie, G., Haimson, B., Hawkins, A., Heise, J., Horn, M., Horne, R. N., Horner, J., Hu, M., Huang, H., Huang, L., Im, K., Ingraham, M., Johnston, B., Karra, S., Kim, K., King, D. K., Knox, J., Kumar, D., Kutun, K., Lee, M., Li, K., Lopez, R., Maceira, M., Makedonska, N., Marone, C., Mattson, E., Mcclure, M. W., John McLennan, Mcling, T., Mellors, R. J., Metcalfe, E., Miskimins, J., Nakagawa, S., Newman, G., Nieto, A., Oldenburg, C. M., Pan, W., Pawar, R., Petrov, P., Pietzyk, B., Polsky, Y., Popejoy, J., Porse, S., Richard, S., Roberts, B. Q., Robertson, M., Rutqvist, J., Rynders, D., Santos-Villalobos, H., Schoenball, M., Sesetty, V., Smith, M. M., Sone, H., Soom, F. A., Strickland, C. E., Su, J., Thomle, J. N., Uzunlar, N., Vachaparampil, A., Valladao, C. A., Vandermeer, W., Vandine, G., Vardiman, D., Vermeul, V. R., Wagoner, J. L., Weers, J., White, J., Winterfeld, P., Wood, T., Wu, H., Wu, Y. S., Wu, Y., Yildirim, E. C., Zhang, Y., Zhang, Y. Q., Zhou, J., and Zhou, Q.

56. Slip tendency analysis of fracture networks to determine suitability of candidate testbeds for the EGS collab hydroshear experiment

Author

Singh, A., Zoback, M., Neupane, G., Dobson, P. F., Kneafsey, T. J., Schoenball, M., Guglielmi, Y., Ulrich, C., Roggenthen, W., Uzunlar, N., Morris, J., Fu, P., Schwering, P. C., Knox, H. A., Frash, L., Doe, T. W., Wang, H., Condon, K., Johnston, B., Ajo-Franklin, J., Baumgartner, T., Beckers, K., Blankenship, D., Bonneville, A., Boyd, L., Brown, S., Brown, S. T., Burghardt, J. A., Chen, T., Chen, Y., Cook, P. J., Crandall, D., Doe, T., Doughty, C. A., Elsworth, D., Feldman, J., Foris, A., Frash, L. P., Frone, Z., Gao, K., Ghassemi, A., Gudmundsdottir, H., Guthrie, G., Haimson, B., Hawkins, A., Heise, J., Horn, M., Horne, R. N., Horner, J., Hu, M., Huang, H., Huang, L., Im, K. J., Ingraham, M., Jayne, R. S., Johnson, T. C., Satish Karra, Kim, K., King, D. K., Kneafsey, T., Knox, H., Knox, J., Kumar, D., Kutun, K., Lee, M., Li, K., Li, Z., Lopez, R., Maceira, M., Mackey, P., Makedonska, N., Marone, C. J., Mattson, E., Mcclure, M. W., Mclennan, J., Mcling, T., Medler, C., Mellors, R. J., Metcalfe, E., Miskimins, J., Moore, J., Morency, C. E., Morris, J. P., Nakagawa, S., Newman, G., Nieto, A., Oldenburg, C. M., Pan, W., Paronish, T., Pawar, R., Petrov, P., Pietzyk, B., Podgorney, R., Polsky, Y., Pope, J., Porse, S., Roberts, B. Q., Robertson, M., Rutqvist, J., Rynders, D., Santos-Villalobos, H., Schwering, P., Sesetty, V., Sherman, C. S., Smith, M. M., Sone, H., Soom, F. A., Sprinkle, P., Strickland, C. E., Su, J., Templeton, D., Thomle, J. N., Vachaparampil, A., Valladao, C. A., Vandermeer, W., Vandine, G., Vardiman, D., Vermeul, V. R., Wagoner, J. L., Wang, H. F., Weers, J., Welch, N., White, J., White, M. D., Winterfeld, P., Wood, T., Workman, S., Wu, H., Wu, Y. S., Wu, Y., Yildirim, E. C., Zhang, Y., Zhang, Y. Q., Zhou, Q., and Zoback, M. D.

57. Fracture and flow designs for the collab/SIGMA-V project

Author

Knox, H., Fu, P., Morris, J., Guglielmi, Y., Vermeul, V., Ajo-Franklin, J., Strickland, C., Johnson, T., Cook, P., Herrick, C., Lee, M., Bauer, S. J., Baumgartner, T., Blankenship, D., Bonneville, A., Boyd, L., Brown, S. T., Burghardt, J. A., Carroll, S. A., Chen, T., Condon, C., Cook, P. J., Dobson, P. F., Doe, T., Doughty, C. A., Elsworth, D., Frash, L. P., Frone, Z., Ghassemi, A., Gudmundsdottir, H., Guthrie, G., Haimson, B., Heise, J., Horn, M., Horne, R. N., Hu, M., Huang, H., Huang, L., Johnson, T. C., Johnston, B., Karra, S., Kim, K., King, D. K., Kneafsey, T., Kumar, D., Li, K., Maceira, M., Makedonska, N., Marone, C., Mattson, E., Mcclure, M. W., John McLennan, Mcling, T., Mellors, R. J., Metcalfe, E., Miskimins, J., Nakagawa, S., Neupane, G., Newman, G., Nieto, A., Oldenburg, C. M., Pawar, R., Petrov, P., Pietzyk, B., Podgorney, R., Polsky, Y., Porse, S., Roggenthen, B., Rutqvist, J., Santos-Villalobos, H., Schwering, P., Sesetty, V., Singh, A., Smith, M. M., Snyder, N., Sone, H., Sonnenthal, E. L., Spycher, N., Su, J., Suzuki, A., Ulrich, C., Valladao, C. A., Vandermeer, W., Vardiman, D., Wagoner, J. L., Wang, H. F., Weers, J., White, J., White, M. D., Winterfeld, P., Wu, Y. S., Wu, Y., Zhang, Y., Zhang, Y. Q., Zhou, J., Zhou, Q., and Zoback, M. D.

58. Deterministic Discrete Fracture Network (DFN) Model for the EGS Collab Project on the 4850 Level of the Sanford Underground Research Facility (SURF)

Author

Schwering, P. C., Doe, T. W., Roggenthen, W. M., Neupane, G. H., Johnston, H., Dobson, P. F., Ulrich, C., Singh, A., Uzunlar, N., Reimers, C., Ajo-Franklin, J., Baumgartner, T., Beckers, K., Blankenship, D., Bonneville, A., Boyd, L., Brown, S., Burghardt, J. A., Chai, C., Chen, Y., Chi, B., Condon, K., Cook, P. J., Crandall, D., Doe, T., Doughty, C. A., Elsworth, D., Feldman, J., Feng, Z., Foris, A., Frash, L. P., Frone, Z., Fu, P., Gao, K., Ghassemi, A., Guglielmi, Y., Haimson, B., Hawkins, A., Heise, J., Hopp, C., Horn, M., Horne, R. N., Horner, J., Hu, M., Huang, H., Huang, L., Im, K. J., Ingraham, M., Jafarov, E., Jayne, R. S., Johnson, S. E., Johnson, T. C., Johnston, B., Kim, K., King, D. K., Kneafsey, T., Knox, H., Knox, J., Kumar, D., Lee, M., Li, K., Li, Z., Maceira, M., Mackey, P., Makedonska, N., Mattson, E., Mcclure, M. W., Mclennan, J., Medler, C., Mellors, R. J., Metcalfe, E., Moore, J., Morency, C. E., Morris, J. P., Myers, T., Nakagawa, S., Neupane, G., Newman, G., Nieto, A., Oldenburg, C. M., Paronish, T., Pawar, R., Petrov, P., Pietzyk, B., Podgorney, R., Polsky, Y., Pope, J., Porse, S., Primo, J. C., Roberts, B. Q., Robertson, M., Roggenthen, W., Rutqvist, J., Rynders, D., Schoenball, M., Schwering, P., Sesetty, V., Sherman, C. S., Smith, M. M., Sone, H., Sonnenthal, E. L., Soom, F. A., Sprinkle, P., Strickland, C. E., Su, J., Dennise Templeton, Thomle, J. N., Tribaldos, V. R., Vachaparampil, A., Valladao, C. A., Vandermeer, W., Vandine, G., Vardiman, D., Vermeul, V. R., Wagoner, J. L., Wang, H. F., Weers, J., Welch, N., White, J., White, M. D., Winterfeld, P., Wood, T., Workman, S., Wu, H., Wu, Y. S., Yildirim, E. C., Zhang, Y., Zhang, Y. Q., Zhou, Q., and Zoback, M. D.

59. Characterizing the impact of particle behavior at fracture intersections in three-dimensional discrete fracture networks.

Author

Sherman T, Hyman JD, Bolster D, Makedonska N, and Srinivasan G

Abstract

We characterize the influence of different intersection mixing rules for particle tracking simulations on transport properties through three-dimensional discrete fracture networks. It is too computationally burdensome to explicitly resolve all fluid dynamics within a large three-dimensional fracture network. In discrete fracture network (DFN) models, mass transport at fracture intersections is modeled as a subgrid scale process based on a local Péclet number. The two most common mass transfer mixing rules are (1) complete mixing, where diffusion dominates mass transfer, and (2) streamline routing, where mass follows pathlines through an intersection. Although it is accepted that mixing rules impact local mass transfer through single intersections, the effect of the mixing rule on transport at the fracture network scale is still unresolved. Through the use of explicit particle tracking simulations, we study transport through a quasi-two-dimensional lattice network and a three-dimensional network whose fracture radii follow a truncated power-law distribution. We find that the impact of the mixing rule is a function of the initial particle injection condition, the heterogeneity of the velocity field, and the geometry of the network. Furthermore, our particle tracking simulations show that the mixing rule can particularly impact concentrations on secondary flow pathways. We relate these local differences in concentration to reactive transport and show that streamline routing increases the average mixing rate in DFN simulations.

Published
2019
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60. Analysis and Visualization of Discrete Fracture Networks Using a Flow Topology Graph.

Author

Aldrich G, Hyman JD, Karra S, Gable CW, Makedonska N, Viswanathan H, Woodring J, and Hamann B

Abstract

We present an analysis and visualization prototype using the concept of a flow topology graph (FTG) for characterization of flow in constrained networks, with a focus on discrete fracture networks (DFN), developed collaboratively by geoscientists and visualization scientists. Our method allows users to understand and evaluate flow and transport in DFN simulations by computing statistical distributions, segment paths of interest, and cluster particles based on their paths. The new approach enables domain scientists to evaluate the accuracy of the simulations, visualize features of interest, and compare multiple realizations over a specific domain of interest. Geoscientists can simulate complex transport phenomena modeling large sites for networks consisting of several thousand fractures without compromising the geometry of the network. However, few tools exist for performing higher-level analysis and visualization of simulated DFN data. The prototype system we present addresses this need. We demonstrate its effectiveness for increasingly complex examples of DFNs, covering two distinct use cases - hydrocarbon extraction from unconventional resources and transport of dissolved contaminant from a spent nuclear fuel repository.

Published
2017
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61. Understanding hydraulic fracturing: a multi-scale problem.

Author

Hyman JD, Jiménez-Martínez J, Viswanathan HS, Carey JW, Porter ML, Rougier E, Karra S, Kang Q, Frash L, Chen L, Lei Z, O'Malley D, and Makedonska N

Abstract

Despite the impact that hydraulic fracturing has had on the energy sector, the physical mechanisms that control its efficiency and environmental impacts remain poorly understood in part because the length scales involved range from nanometres to kilometres. We characterize flow and transport in shale formations across and between these scales using integrated computational, theoretical and experimental efforts/methods. At the field scale, we use discrete fracture network modelling to simulate production of a hydraulically fractured well from a fracture network that is based on the site characterization of a shale gas reservoir. At the core scale, we use triaxial fracture experiments and a finite-discrete element model to study dynamic fracture/crack propagation in low permeability shale. We use lattice Boltzmann pore-scale simulations and microfluidic experiments in both synthetic and shale rock micromodels to study pore-scale flow and transport phenomena, including multi-phase flow and fluids mixing. A mechanistic description and integration of these multiple scales is required for accurate predictions of production and the eventual optimization of hydrocarbon extraction from unconventional reservoirs. Finally, we discuss the potential of CO2 as an alternative working fluid, both in fracturing and re-stimulating activities, beyond its environmental advantages.This article is part of the themed issue 'Energy and the subsurface'., (© 2016 The Author(s).)

Published
2016
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62. Mechanical properties of glass forming systems.

Author

Ilyin V, Makedonska N, Procaccia I, and Schupper N

Abstract

We address the interesting temperature range of a glass forming system where the mechanical properties are intermediate between those of a liquid and a solid. We employ an efficient Monte Carlo method to calculate the elastic moduli, and show that in this range of temperatures the moduli are finite for short times and vanish for long times, where short and long depend on the temperature. By invoking some exact results from statistical mechanics we offer an alternative method to compute shear moduli using molecular dynamics simulations, and compare those to the Monte Carlo method. The final conclusion is that these systems are not "viscous fluids" in the usual sense, as their actual time-dependence concatenates solid-like materials with varying local shear moduli.

Published
2007
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63. Statistical mechanics of the glass transition as revealed by a Voronoi tesselation.

Author

Hentschel HG, Ilyin V, Makedonska N, Procaccia I, and Schupper N

Abstract

The statistical mechanics of simple glass forming systems in two dimensions is worked out. The glass disorder is encoded via a Voronoi tesselation, and the statistical mechanics is performed directly in this encoding. The theory provides, without free parameters, an explanation of the glass transition phenomenology, including the identification of two different temperatures, T(g) and T(c) , the first associated with jamming and the second associated with crystallization at very low temperatures.

Published
2007
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