Geomechanical evaluation of natural shear fractures in the EGS Collab experiment 1 test bed

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

Research output: Contribution to conferencePaper

Abstract

Natural fractures can have a significant influence on hydraulic stimulation. One must estimate the peak and residual geomechanical strengths, hydraulic conductivity, and in-situ stress state for the exiting natural fractures in a site in order to identify those natural fractures that are prone to hydraulic opening and/or shear. We apply a triaxial direct-shear method to measure these fracture properties in the Poorman’s schist for the EGS Collab project’s Experiment 1 test bed at the Sanford Underground Research Facility. In addition, we measure rock matrix density, matrix permeability, and acoustic velocity anisotropy. Using this data, we identify that south-east striking foliation-parallel fractures in this test bed are vulnerable to shear stimulation and can be hydrosheared at in-situ stress conditions. However, natural infilled fractures which are relatively easy to locate and are ubiquitous at the site were found to be too strong and high-friction for hydroshearing, with exception for those parallel to the foliation of the rock.

Original languageEnglish (US)
StatePublished - Jan 1 2019
Event53rd U.S. Rock Mechanics/Geomechanics Symposium - Brooklyn, United States
Duration: Jun 23 2019Jun 26 2019

Conference

Conference53rd U.S. Rock Mechanics/Geomechanics Symposium
CountryUnited States
CityBrooklyn
Period6/23/196/26/19

Fingerprint

test stands
shear
evaluation
hydraulics
experiment
Experiments
in situ stress
foliation
stimulation
Rocks
Hydraulics
residual strength
rocks
research facilities
schist
matrix
Hydraulic conductivity
Acoustic wave velocity
matrices
acoustic velocity

All Science Journal Classification (ASJC) codes

  • Geochemistry and Petrology
  • Geophysics

Cite this

Frash, L. P., Welch, N. J., Carey, J. W., Ajo-Franklin, J., Bauer, S. J., Baumgartner, T., ... Zoback, M. D. (2019). Geomechanical evaluation of natural shear fractures in the EGS Collab experiment 1 test bed. Paper presented at 53rd U.S. Rock Mechanics/Geomechanics Symposium, Brooklyn, United States.
Frash, L. P. ; Welch, N. J. ; Carey, J. W. ; Ajo-Franklin, J. ; Bauer, S. J. ; Baumgartner, T. ; Beckers, K. ; Blankenship, D. ; Bonneville, A. ; Boyd, L. ; Brown, S. T. ; Burghardt, J. A. ; Chen, T. ; Chen, Y. ; Condon, K. ; Cook, P. J. ; Dobson, P. F. ; 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. ; Herrick, C. G. ; Horn, M. ; Horne, R. N. ; Horner, J. ; Hu, M. ; Huang, H. ; Huang, L. ; Im, K. ; Ingraham, M. ; Johnson, T. C. ; Johnston, B. ; Karra, S. ; Kim, K. ; King, D. K. ; Kneafsey, T. ; Knox, H. ; Knox, J. ; Kumar, D. ; Kutun, K. ; Lee, M. ; Li, K. ; Lopez, R. ; 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. ; Pan, W. ; Pawar, R. ; Petrov, P. ; Pietzyk, B. ; Podgorney, R. ; Polsky, Y. ; Porse, S. ; Richard, S. ; Roberts, B. Q. ; Robertson, M. ; Roggenthen, W. ; Rutqvist, J. ; Rynders, D. ; Santos-Villalobos, H. ; Schoenball, M. ; Schwering, P. ; Sesetty, V. ; Singh, A. ; Smith, M. M. ; Sone, H. ; Strickland, C. E. ; Su, J. ; Ulrich, C. ; Uzunlar, N. ; Vachaparampil, A. ; Valladao, C. A. ; Vandermeer, W. ; Vandine, G. ; Vardiman, D. ; Vermeul, V. R. ; Wagoner, J. L. ; Wang, H. F. ; Weers, J. ; White, J. ; White, M. D. ; Winterfeld, P. ; Wood, T. ; Wu, H. ; Wu, Y. S. ; Wu, Y. ; Zhang, Y. ; Zhang, Y. Q. ; Zhou, J. ; Zhou, Q. ; Zoback, M. D. / Geomechanical evaluation of natural shear fractures in the EGS Collab experiment 1 test bed. Paper presented at 53rd U.S. Rock Mechanics/Geomechanics Symposium, Brooklyn, United States.
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title = "Geomechanical evaluation of natural shear fractures in the EGS Collab experiment 1 test bed",
abstract = "Natural fractures can have a significant influence on hydraulic stimulation. One must estimate the peak and residual geomechanical strengths, hydraulic conductivity, and in-situ stress state for the exiting natural fractures in a site in order to identify those natural fractures that are prone to hydraulic opening and/or shear. We apply a triaxial direct-shear method to measure these fracture properties in the Poorman’s schist for the EGS Collab project’s Experiment 1 test bed at the Sanford Underground Research Facility. In addition, we measure rock matrix density, matrix permeability, and acoustic velocity anisotropy. Using this data, we identify that south-east striking foliation-parallel fractures in this test bed are vulnerable to shear stimulation and can be hydrosheared at in-situ stress conditions. However, natural infilled fractures which are relatively easy to locate and are ubiquitous at the site were found to be too strong and high-friction for hydroshearing, with exception for those parallel to the foliation of the rock.",
author = "Frash, {L. P.} and Welch, {N. J.} and Carey, {J. W.} and J. Ajo-Franklin and Bauer, {S. J.} and T. Baumgartner and K. Beckers and D. Blankenship and A. Bonneville and L. Boyd and Brown, {S. T.} and Burghardt, {J. A.} and T. Chen and Y. Chen and K. Condon and Cook, {P. J.} and Dobson, {P. F.} and T. Doe and Doughty, {C. A.} and D. Elsworth and J. Feldman and A. Foris and Frash, {L. P.} and Z. Frone and P. Fu and K. Gao and A. Ghassemi and H. Gudmundsdottir and Y. Guglielmi and G. Guthrie and B. Haimson and A. Hawkins and J. Heise and Herrick, {C. G.} and M. Horn and Horne, {R. N.} and J. Horner and M. Hu and H. Huang and L. Huang and K. Im and M. Ingraham and Johnson, {T. C.} and B. Johnston and S. Karra and K. Kim and King, {D. K.} and T. Kneafsey and H. Knox and J. Knox and D. Kumar and K. Kutun and M. Lee and K. Li and R. Lopez and M. Maceira and N. Makedonska and C. Marone and E. Mattson and McClure, {M. W.} and J. McLennan and T. McLing and Mellors, {R. J.} and E. Metcalfe and J. Miskimins and Morris, {J. P.} and S. Nakagawa and G. Neupane and G. Newman and A. Nieto and Oldenburg, {C. M.} and W. Pan and R. Pawar and P. Petrov and B. Pietzyk and R. Podgorney and Y. Polsky and S. Porse and S. Richard and Roberts, {B. Q.} and M. Robertson and W. Roggenthen and J. Rutqvist and D. Rynders and H. Santos-Villalobos and M. Schoenball and P. Schwering and V. Sesetty and A. Singh and Smith, {M. M.} and H. Sone and Strickland, {C. E.} and J. Su and C. Ulrich and N. Uzunlar and A. Vachaparampil and Valladao, {C. A.} and W. Vandermeer and G. Vandine and D. Vardiman and Vermeul, {V. R.} and Wagoner, {J. L.} and Wang, {H. F.} and J. Weers and J. White and White, {M. D.} and P. Winterfeld and T. Wood and H. Wu and Wu, {Y. S.} and Y. Wu and Y. Zhang and Zhang, {Y. Q.} and J. Zhou and Q. Zhou and Zoback, {M. D.}",
year = "2019",
month = "1",
day = "1",
language = "English (US)",
note = "53rd U.S. Rock Mechanics/Geomechanics Symposium ; Conference date: 23-06-2019 Through 26-06-2019",

}

Frash, LP, Welch, NJ, Carey, JW, Ajo-Franklin, J, Bauer, SJ, Baumgartner, T, Beckers, K, Blankenship, D, Bonneville, A, Boyd, L, Brown, ST, Burghardt, JA, Chen, T, Chen, Y, Condon, K, Cook, PJ, Dobson, PF, Doe, T, Doughty, CA, Elsworth, D, Feldman, J, Foris, A, Frash, LP, Frone, Z, Fu, P, Gao, K, Ghassemi, A, Gudmundsdottir, H, Guglielmi, Y, Guthrie, G, Haimson, B, Hawkins, A, Heise, J, Herrick, CG, Horn, M, Horne, RN, Horner, J, Hu, M, Huang, H, Huang, L, Im, K, Ingraham, M, Johnson, TC, Johnston, B, Karra, S, Kim, K, King, DK, Kneafsey, T, Knox, H, Knox, J, Kumar, D, Kutun, K, Lee, M, Li, K, Lopez, R, Maceira, M, Makedonska, N, Marone, C, Mattson, E, McClure, MW, McLennan, J, McLing, T, Mellors, RJ, Metcalfe, E, Miskimins, J, Morris, JP, Nakagawa, S, Neupane, G, Newman, G, Nieto, A, Oldenburg, CM, Pan, W, Pawar, R, Petrov, P, Pietzyk, B, Podgorney, R, Polsky, Y, Porse, S, Richard, S, Roberts, BQ, Robertson, M, Roggenthen, W, Rutqvist, J, Rynders, D, Santos-Villalobos, H, Schoenball, M, Schwering, P, Sesetty, V, Singh, A, Smith, MM, Sone, H, Strickland, CE, Su, J, Ulrich, C, Uzunlar, N, Vachaparampil, A, Valladao, CA, Vandermeer, W, Vandine, G, Vardiman, D, Vermeul, VR, Wagoner, JL, Wang, HF, Weers, J, White, J, White, MD, Winterfeld, P, Wood, T, Wu, H, Wu, YS, Wu, Y, Zhang, Y, Zhang, YQ, Zhou, J, Zhou, Q & Zoback, MD 2019, 'Geomechanical evaluation of natural shear fractures in the EGS Collab experiment 1 test bed', Paper presented at 53rd U.S. Rock Mechanics/Geomechanics Symposium, Brooklyn, United States, 6/23/19 - 6/26/19.

Geomechanical evaluation of natural shear fractures in the EGS Collab experiment 1 test bed. / Frash, L. P.; Welch, N. J.; Carey, J. W.; Ajo-Franklin, J.; Bauer, S. J.; Baumgartner, T.; Beckers, K.; Blankenship, D.; Bonneville, A.; Boyd, L.; Brown, S. T.; Burghardt, J. A.; Chen, T.; Chen, Y.; Condon, K.; Cook, P. J.; Dobson, P. F.; 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.; Herrick, C. G.; Horn, M.; Horne, R. N.; Horner, J.; Hu, M.; Huang, H.; Huang, L.; Im, K.; Ingraham, M.; Johnson, T. C.; Johnston, B.; Karra, S.; Kim, K.; King, D. K.; Kneafsey, T.; Knox, H.; Knox, J.; Kumar, D.; Kutun, K.; Lee, M.; Li, K.; Lopez, R.; 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.; Pan, W.; Pawar, R.; Petrov, P.; Pietzyk, B.; Podgorney, R.; Polsky, Y.; Porse, S.; Richard, S.; Roberts, B. Q.; Robertson, M.; Roggenthen, W.; Rutqvist, J.; Rynders, D.; Santos-Villalobos, H.; Schoenball, M.; Schwering, P.; Sesetty, V.; Singh, A.; Smith, M. M.; Sone, H.; Strickland, C. E.; Su, J.; Ulrich, C.; Uzunlar, N.; Vachaparampil, A.; Valladao, C. A.; Vandermeer, W.; Vandine, G.; Vardiman, D.; Vermeul, V. R.; Wagoner, J. L.; Wang, H. F.; Weers, J.; White, J.; White, M. D.; Winterfeld, P.; Wood, T.; Wu, H.; Wu, Y. S.; Wu, Y.; Zhang, Y.; Zhang, Y. Q.; Zhou, J.; Zhou, Q.; Zoback, M. D.

2019. Paper presented at 53rd U.S. Rock Mechanics/Geomechanics Symposium, Brooklyn, United States.

Research output: Contribution to conferencePaper

TY - CONF

T1 - Geomechanical evaluation of natural shear fractures in the EGS Collab experiment 1 test bed

AU - Frash, L. P.

AU - Welch, N. J.

AU - Carey, J. W.

AU - Ajo-Franklin, J.

AU - Bauer, S. J.

AU - Baumgartner, T.

AU - Beckers, K.

AU - Blankenship, D.

AU - Bonneville, A.

AU - Boyd, L.

AU - Brown, S. T.

AU - Burghardt, J. A.

AU - Chen, T.

AU - Chen, Y.

AU - Condon, K.

AU - Cook, P. J.

AU - Dobson, P. F.

AU - Doe, T.

AU - Doughty, C. A.

AU - Elsworth, D.

AU - Feldman, J.

AU - Foris, A.

AU - Frash, L. P.

AU - Frone, Z.

AU - Fu, P.

AU - Gao, K.

AU - Ghassemi, A.

AU - Gudmundsdottir, H.

AU - Guglielmi, Y.

AU - Guthrie, G.

AU - Haimson, B.

AU - Hawkins, A.

AU - Heise, J.

AU - Herrick, C. G.

AU - Horn, M.

AU - Horne, R. N.

AU - Horner, J.

AU - Hu, M.

AU - Huang, H.

AU - Huang, L.

AU - Im, K.

AU - Ingraham, M.

AU - Johnson, T. C.

AU - Johnston, B.

AU - Karra, S.

AU - Kim, K.

AU - King, D. K.

AU - Kneafsey, T.

AU - Knox, H.

AU - Knox, J.

AU - Kumar, D.

AU - Kutun, K.

AU - Lee, M.

AU - Li, K.

AU - Lopez, R.

AU - Maceira, M.

AU - Makedonska, N.

AU - Marone, C.

AU - Mattson, E.

AU - McClure, M. W.

AU - McLennan, J.

AU - McLing, T.

AU - Mellors, R. J.

AU - Metcalfe, E.

AU - Miskimins, J.

AU - Morris, J. P.

AU - Nakagawa, S.

AU - Neupane, G.

AU - Newman, G.

AU - Nieto, A.

AU - Oldenburg, C. M.

AU - Pan, W.

AU - Pawar, R.

AU - Petrov, P.

AU - Pietzyk, B.

AU - Podgorney, R.

AU - Polsky, Y.

AU - Porse, S.

AU - Richard, S.

AU - Roberts, B. Q.

AU - Robertson, M.

AU - Roggenthen, W.

AU - Rutqvist, J.

AU - Rynders, D.

AU - Santos-Villalobos, H.

AU - Schoenball, M.

AU - Schwering, P.

AU - Sesetty, V.

AU - Singh, A.

AU - Smith, M. M.

AU - Sone, H.

AU - Strickland, C. E.

AU - Su, J.

AU - Ulrich, C.

AU - Uzunlar, N.

AU - Vachaparampil, A.

AU - Valladao, C. A.

AU - Vandermeer, W.

AU - Vandine, G.

AU - Vardiman, D.

AU - Vermeul, V. R.

AU - Wagoner, J. L.

AU - Wang, H. F.

AU - Weers, J.

AU - White, J.

AU - White, M. D.

AU - Winterfeld, P.

AU - Wood, T.

AU - Wu, H.

AU - Wu, Y. S.

AU - Wu, Y.

AU - Zhang, Y.

AU - Zhang, Y. Q.

AU - Zhou, J.

AU - Zhou, Q.

AU - Zoback, M. D.

PY - 2019/1/1

Y1 - 2019/1/1

N2 - Natural fractures can have a significant influence on hydraulic stimulation. One must estimate the peak and residual geomechanical strengths, hydraulic conductivity, and in-situ stress state for the exiting natural fractures in a site in order to identify those natural fractures that are prone to hydraulic opening and/or shear. We apply a triaxial direct-shear method to measure these fracture properties in the Poorman’s schist for the EGS Collab project’s Experiment 1 test bed at the Sanford Underground Research Facility. In addition, we measure rock matrix density, matrix permeability, and acoustic velocity anisotropy. Using this data, we identify that south-east striking foliation-parallel fractures in this test bed are vulnerable to shear stimulation and can be hydrosheared at in-situ stress conditions. However, natural infilled fractures which are relatively easy to locate and are ubiquitous at the site were found to be too strong and high-friction for hydroshearing, with exception for those parallel to the foliation of the rock.

AB - Natural fractures can have a significant influence on hydraulic stimulation. One must estimate the peak and residual geomechanical strengths, hydraulic conductivity, and in-situ stress state for the exiting natural fractures in a site in order to identify those natural fractures that are prone to hydraulic opening and/or shear. We apply a triaxial direct-shear method to measure these fracture properties in the Poorman’s schist for the EGS Collab project’s Experiment 1 test bed at the Sanford Underground Research Facility. In addition, we measure rock matrix density, matrix permeability, and acoustic velocity anisotropy. Using this data, we identify that south-east striking foliation-parallel fractures in this test bed are vulnerable to shear stimulation and can be hydrosheared at in-situ stress conditions. However, natural infilled fractures which are relatively easy to locate and are ubiquitous at the site were found to be too strong and high-friction for hydroshearing, with exception for those parallel to the foliation of the rock.

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UR - http://www.scopus.com/inward/citedby.url?scp=85074111491&partnerID=8YFLogxK

M3 - Paper

AN - SCOPUS:85074111491

ER -

Frash LP, Welch NJ, Carey JW, Ajo-Franklin J, Bauer SJ, Baumgartner T et al. Geomechanical evaluation of natural shear fractures in the EGS Collab experiment 1 test bed. 2019. Paper presented at 53rd U.S. Rock Mechanics/Geomechanics Symposium, Brooklyn, United States.