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In-Situ AE Measurement of Hydraulic Fracturing at Geothermal Fields

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Hydraulic fracturing and geothermal energy

Abstract

A triaxial acceleration-sense down-hole AE measurement system was developed and successfully applied to the monitoring of both man-made and natural hydraulic fracture in a geothermal field. The acceleration-sense instrumentation allows long-distance measurement of subsurface crack extension. AE events during hydraulic fracturing in Nigorikawa geothermal field could be detected at a distance of 1600m from the AE source. AE events during a closure operation of a well-head valve in the Kakkonda geothermal field could also be detected by the system. In this paper, the feasibility of the simple measurement system for in-situ monitoring of subsurface crack extension in a geothermal field is demonstrated with reference to the fracture mechanics model of a geothermal reservoir.

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References

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© 1983 Martinus Nijhoff Publishers, The Hague

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Niitsuma, H. et al. (1983). In-Situ AE Measurement of Hydraulic Fracturing at Geothermal Fields. In: Nemat-Nasser, S., Abé, H., Hirakawa, S. (eds) Hydraulic fracturing and geothermal energy. Mechanics of elastic and inelastic solids, vol 5. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-6884-4_23

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  • DOI: https://doi.org/10.1007/978-94-009-6884-4_23

  • Publisher Name: Springer, Dordrecht

  • Print ISBN: 978-94-009-6886-8

  • Online ISBN: 978-94-009-6884-4

  • eBook Packages: Springer Book Archive

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