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Crack Expansion and Fracturing Mode of Hydraulic Refracturing from Acoustic Emission Monitoring in a Small-Scale Field Experiment

  • Tsuyoshi IshidaEmail author
  • Wataru Fujito
  • Hiroto Yamashita
  • Makoto Naoi
  • Hirokazu Fuji
  • Kenichirou Suzuki
  • Hiroya Matsui
Original Paper
  • 129 Downloads

Abstract

We conducted a hydraulic fracturing (HF) experiment at a 500-m-level gallery in Mizunami Underground Research Laboratory in central Japan. We drilled a hole downward from the gallery floor and initially injected water at a flow rate of 10 mL/min in a section of 36 mm in diameter and 160 mm in length that was selected to avoid a pre-existing joint. The first breakdown (BD) occurred at 9.20 MPa, whereupon we increased the flow rate to 30 mL/min and induced a second BD in the form of “refracturing” at 9.79 MPa, larger than the first BD pressure. Acoustic emissions (AEs) monitored with 16 sensors in four boreholes located 1 m away from the HF hole exhibited two-dimensional distributions, which likely delineate a crack induced by the fracturing. Expansions of the regions in which AEs occurred were observed only immediately after the first and second BDs. Many AE events in other periods were distributed within the regions where AE events had already occurred. The initial motion polarities of P-waves indicate that tensile-dominant AE events occurred when the regions expanded and they were distributed primarily on the frontiers of the regions where AE events had already occurred. The experimental results suggest that increasing the injection flow rate is effective for generating new cracks in the refracturing, with the new crack expansions being induced by tensile fracturing.

Keywords

Hydraulic fracturing Refracturing Flow rate Granitic rock Acoustic emission Fracture mode 

Notes

Acknowledgements

We received invaluable suggestions from Mr. Takashi Akai, Japan Oil, Gas and Metals National Corporation. We appreciate efforts by the editor-in-chief, the guest editor and the anonymous reviewers to improve our paper through their invaluable review comments. This work was financially supported by the Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research (A), Grant number 25249131. We sincerely appreciate the suggestions and the financial supports.

References

  1. Baisch S, Weidler R, Vörös R, Wyborn D, DeGraaf L (2006) Induced seismicity during the stimulation of a geothermal HFR reservoir in the Cooper Basin, Australia. Bull Seismol Soc Am 96(6):2242–2256.  https://doi.org/10.1785/0120050255 CrossRefGoogle Scholar
  2. Baisch S, Vörös R, Weidler R, Wyborn D (2009) Investigation of fault mechanisms during geothermal reservoir stimulation experiments in the Cooper Basin, Australia. Bull Seismol Soc Am 99(1):148–158.  https://doi.org/10.1785/0120080055 CrossRefGoogle Scholar
  3. Baisch S, Rothert E, Stang H, Vörös R, Koch C, McMahon A (2015) Continued geothermal reservoir stimulation experiments in the Cooper Basin (Australia). Bull Seismol Soc Am 105(1):198–209.  https://doi.org/10.1785/012014020899 CrossRefGoogle Scholar
  4. Christianovich A, Zheltov YP (1955) Formation of vertical fractures by means of highly viscous liquid. In: Proc. 4th world pet. congr. vol 2, pp 579–586Google Scholar
  5. Cornet FH (1992) Fracture processes induced by forced fluid percolation. In: Gasparini P, Scarpa R, Aki K (eds) Volcanic seismology. IAVCEI proceedings in volcanology, vol 3. Springer, New York, pp 407–431CrossRefGoogle Scholar
  6. Daneshy AA (1973) On the design of vertical hydraulic fractures. J Pet Technol 25:83–97CrossRefGoogle Scholar
  7. Evans KF, Moriya H, Niitsuma H, Jones RH, Phillips WS, Genter A, Sausse J, Jung R, Baria R (2005) Microseismicity and permeability enhancement of hydrogeologic structures during massive fluid injections into granite at 3 km depth at the Soultz HDR site. Geophys J Int 160:388–412Google Scholar
  8. Foda S (2015) Refracturing: technology and reservoir understanding are giving new life to depleted unconventional assets. J Pet Technol 67(7):76–79CrossRefGoogle Scholar
  9. Geertsma J, De Klerk F (1969) A rapid method of predicting width and extent of hydraulically induced fractures. J Pet Technol 21:1571–1581CrossRefGoogle Scholar
  10. Gischig VS, Doetsch J, Maurer H, Krietsch H, Amann F, Evans KF, Nejati M, Jalali M, Valley B, Obermann AC, Wiemer S, Giardini D (2018) On the link between stress field and small-scale hydraulic fracture growth in anisotropic rock derived from microseismicity. Solid Earth 9:39–61.  https://doi.org/10.5194/se-9-39-2018 CrossRefGoogle Scholar
  11. Haimson BC (1978) The hydrofracturing stress measuring method and recent field results. Int J Rock Mech Min Sci Geomech Abstr 15:167–178CrossRefGoogle Scholar
  12. Hill DP (1977) A model for earthquake swarms. J Geophys Res 82:1347–1352CrossRefGoogle Scholar
  13. Horálek J, Jechumtálová Z, Dorbath L, Šílený J (2010) Source mechanisms of micro-earthquakes induced in a fluid injection experiment at the HDR site Soultz-sous-Forêts (Alsace) in 2003 and their temporal and spatial variations. Geophys J Int 181:1547–1565Google Scholar
  14. Hubbert MK, Willis DG (1957) Mechanics of hydraulic fracturing. Trans Am Inst Min Metall Pet Eng 210:153–168Google Scholar
  15. Hummel N, Shapiro SA (2013) Nonlinear diffusion-based interpretation of induced microseismicity: a Barnett Shale hydraulic fracturing case study. Geophysics 78(5):B211–B226.  https://doi.org/10.1190/GEO2012-0242.1 CrossRefGoogle Scholar
  16. Ishida T, Sasaki S, Matsunaga I, Chen Q, Mizuta Y (2000) Effect of grain size in granitic rocks on hydraulic fracturing mechanism. In: Trends in rock mechanics (proc. of sessions of Geo-Denver 2000), geotechnical special publication no. 102, ASCE, pp 128–139Google Scholar
  17. Ishida T, Chen Q, Mizuta Y, Roegiers J-C (2004) Influence of fluid viscosity on the hydraulic fracturing mechanism. Trans ASME J Energy Resour Technol 126:190–200CrossRefGoogle Scholar
  18. Ishida T, Chen Y, Bennour Z, Yamashita H, Inui S, Nagaya Y, Naoi M, Chen Q, Nakayama Y, Nagano Y (2016) Features of CO2 fracturing deduced from acoustic emission and microscopy in laboratory experiments. J Geophys Res Solid Earth 121(11):8080–8098.  https://doi.org/10.1002/2016JB013365 CrossRefGoogle Scholar
  19. Ishida T, Desaki S, Yamashita H, Inui S, Naoi M, Fujii H, Katayama T (2017) Injection of supercritical carbon dioxide into granitic rock and its acoustic emission monitoring. Proced Eng 191:476–482.  https://doi.org/10.1016/j.proeng.2017.05.206 (Proc. of Eurock 2017, Paper No. 106, Ostrava, Czech republic, 2017.) CrossRefGoogle Scholar
  20. Ito H (2003) Inferred role of natural fractures, veins, and breccias in development of the artificial geothermal reservoir at the Ogachi Hot Dry Rock site, Japan. J Geophys Res 108(B9):2426.  https://doi.org/10.1029/2001JB001671 CrossRefGoogle Scholar
  21. Jacobs T (2014) Renewing mature shale wells through refracturing. J Pet Technol 66(4):52–60CrossRefGoogle Scholar
  22. Julian BR, Foulger GR, Monastero FC, Bjornstad S (2010) Imaging hydraulic fracturing in a geothermal reservoir. Geophys Res Lett 37:L07305.  https://doi.org/10.1029/2009GL040933 CrossRefGoogle Scholar
  23. Kaieda H, Kiho K, Motojima I (1993) Multiple fracture creation for hot dry rock development. Trends Geophys Res 2:127–139Google Scholar
  24. Kaieda H, Fujimitsu Y, Yamamoto T, Mizunaga H, Ushijima K, Sasaki S (1995) AE and mise-a-lamasse measurements during a 22 day water circulation test at Ogati HDR site, Japan. In: Proc. of world geothermal congress, Florence, pp 2695–2700Google Scholar
  25. Kao CS, Carvalho FCS, Labuz JF (2011) Micromechanisms of fracture from acoustic emission. Int J Rock Mech Min Sci 48:666–673CrossRefGoogle Scholar
  26. Kondo H (1994) Development of a method for prediction of the extending direction of fractures created by hydraulic fracturing for hot dry rock power generation—characterization of natural fractures in jointed rockmass. In: Central Research Institute of Electric Power Industry, report no. U93039 (in Japanese with English abstract) Google Scholar
  27. Kuwabara K, Takayama Y, Sanada H, Sato T, Tanno T, Itamoto M, Kato H (2014) Initial stress measurement by CCBO at the Mizunami Underground Research Laboratory GL-500m. In: Proc. of MMIJ fall meeting, paper no. A2-4, Kumamoto, Japan (in Japanese) Google Scholar
  28. Kuwabara K, Sato T, Takayama Y, Tanno T, Kato H, Itamoto M (2015a) Initial stress measurement by CCBO at GL. In: 500 m reflood gallery of the Mizunami Underground Research Laboratory, proc. of MMIJ fall meeting, paper no. 3416, Matsuyama, Japan (in Japanese) Google Scholar
  29. Kuwabara K, Sato T, Sanada H, Takayama Y (2015b) Mizunami Underground Research Laboratory Project—rock mechanical investigations at the—500 m stage, JAEA-Research 2015-005, Tono Geoscience Center. Jpn Atom Energy Agency.  https://doi.org/10.11484/jaea-research-2015-005 (in Japanese with English abstract) CrossRefGoogle Scholar
  30. Malpani R, Sinha S, Charry L, Sinosic B, Clark B, Gakhar K (2015) Improving hydrocarbon recovery of horizontal shale wells through refracturing, SPE-175920-MS. In: Proceedings of the SPE/CSUR unconventional resources conference, Society of Petroleum Engineers, Calgary, Alberta, CanadaGoogle Scholar
  31. Matsunaga I, Kobayashi H, Sasaki S, Ishida T (1993) Studying hydraulic fracturing mechanism by laboratory experiments with acoustic emission monitoring. Int J Rock Mech Min Sci Geomech Abstr 30:909–912CrossRefGoogle Scholar
  32. Maxwell SC, Cipolla C (2011) What does microseismicity tell us about hydraulic fracturing? In: SPE annual technical conference and exhibition, Denver, Colorado, USA, SPE 146932Google Scholar
  33. Rodriguez IV, Stanchits S, Burghardt J (2017) Data-driven, in situ, relative calibration based on waveform fitting moment tensor inversion. Rock Mech Rock Eng 50:891–911.  https://doi.org/10.1007/s00603-016-1144-4 CrossRefGoogle Scholar
  34. Ross A, Foulger GR, Julian BR (1996) Non-double-couple mechanisms at the Geysers geothermal area, California. Geophys Res Lett 23:877–880CrossRefGoogle Scholar
  35. Rutledge JT, Phillips WS, Mayerhofer MJ (2004) Faulting induced by forced fluid injection and fluid flow forced by faulting: an interpretation of hydraulic-fracture microseismicity, Carthage Cotton Valley gas field. Texas Bull Seismol Soc Am 94(5):1817–1830CrossRefGoogle Scholar
  36. Sasaki S (1997) Microseismic activity induced during hydraulic fracturing experiment at the Hijiori hot dry rock geothermal energy site, Yamagata, Japan. In: Proc. 4th int. sym. rockburst and seismicity in mines, Krakow, pp 403–407Google Scholar
  37. Sasaki S (1998) Characteristics of microseismic events induced during hydraulic fracturing experiments at the Hijiori hot dry rock geothermal energy site, Yamagata Japan. Tectonophysics 289:171–188CrossRefGoogle Scholar
  38. Schmitt DR, Zoback MD (1993) Infiltration effects in the tensile rupture of thin walled cylinders of glass and granite: implications for the hydraulic fracturing breakdown equation. Int J Rock Mech Min Sci Geomech Abstr 30:289–303.  https://doi.org/10.1016/0148-9062(93)92731-5 CrossRefGoogle Scholar
  39. Šilený J, Jechumtálová Z, Dorbath C (2014) Small scale earthquake mechanisms induced by fluid injection at the enhanced geothermal system reservoir Soultz (Alsace) in 2003 using alternative source models. Pure Appl Geophys 171:2783–2804.  https://doi.org/10.10007/s00024-013-0750-2 CrossRefGoogle Scholar
  40. Šílený J, Hill DP, Eisner L, Cornet FH (2009) Non-double-couple mechanisms of microearthquakes induced by hydraulic fracturing. J Geophys Res 114:B08307.  https://doi.org/10.1029/2008JB005987 CrossRefGoogle Scholar
  41. Sugawara K, Obara Y (1999) Draft ISRM suggested method for in-situ stress measurement using the compact conical-ended borehole overcoring (CCBO) technique. Int J Rock Mech Min Sci 36:307–322CrossRefGoogle Scholar
  42. Talebi S, Cornet FH (1987) Analysis of the microseismicity induced by a fluid injection in a granitic rock mass. Geophys Res Lett 14:227–230CrossRefGoogle Scholar
  43. Zoback MD, Rummel F, Jung R, Raleigh CB (1977) Laboratory hydraulic fracturing experiments in intact and pre-fractured rock. Int J Rock Mech Min Sci Geomech Abstr 14:49–58CrossRefGoogle Scholar

Copyright information

© Springer-Verlag GmbH Austria, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Kyoto University, C-Cluster, Katsura Campus of Kyoto UniversityKyotoJapan
  2. 2.LAZOC Inc.TokyoJapan
  3. 3.OBAYASHI Co.TokyoJapan
  4. 4.Japan Atomic Energy AgencyMizunami-shiJapan

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