Development of hot dry rock technology at the Hijiori test site

Kuriyagawa, Michio; Tenma, Norio

doi:10.1016/s0375-6505(99)00033-4

Cited by 37 publications

(10 citation statements)

References 1 publication

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“…emerging technology, and several research programs have been developed along with pilot plants and the installations have been tested. Examples of EGS can be found worldwide and include Fenton Hill (USA; Duchane and Brown, 2002), Soultz-sous-Forêts (France; Genter et al, 2010;Gérard et al, 2006), Rosemanowes Quarry (UK; Richards et al, 1994), Hijiori and Ogachi (Japan; Kuriyagawa and Tenma, 1999), Cooper Basin (Australia; Chopra and Wyborn, 2003), and The Geysers (USA; Lipman et al, 1978).…”

Section: Enhanced Geothermal Systemsmentioning

confidence: 99%

Advanced seismic processing/imaging techniques and their potential for geothermal exploration

et al. 2016

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International audienceSeismic reflection imaging is a geophysical method that provides greater resolution at depth than other methods and is, therefore, the method of choice for hydrocarbon-reservoir exploration. However, seismic imaging has only sparingly been used to explore and monitor geothermal reservoirs. Yet, detailed images of reservoirs are an essential prerequisite to assess the feasibility of geothermal projects and to reduce the risk associated with expensive drilling programs. The vast experience of hydrocarbon seismic imaging has much to offer in illuminating the route toward improved seismic exploration of geothermal reservoirs - but adaptations to the geothermal problem are required. Specialized seismic acquisition and processing techniques with significant potential for the geothermal case are the use of 3D arrays and multicomponent sensors, coupled with sophisticated processing, including seismic attribute analysis, polarization filtering/migration, converted-wave processing, and the analysis of the diffracted wavefield. Furthermore, full-waveform inversion and S-wave splitting investigations potentially provide quantitative estimates of elastic parameters, from which it may be possible to infer critical geothermal properties, such as porosity and temperature

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Section: Enhanced Geothermal Systemsmentioning

confidence: 99%

Advanced seismic processing/imaging techniques and their potential for geothermal exploration

et al. 2016

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“…The outline of these experiments is shown in Table 1. Since the experiments at the Hijiori HDR site are summarized by KURIYAGAWA and TENMA (1999), a brief description of the main experiments conducted by NEDO at the Hijiori HDR site is given here.…”

Section: Outline Of Experimentsmentioning

confidence: 99%

“…Since 1984, the New Energy and Industrial Technology Development Organization (NEDO) has been conducting a research program for a hot dry rock (HDR) geothermal energy system at Hijiori, Yamagata Prefecture, Japan (KURIYAGAWA and TENMA, 1999). The extraction of geothermal energy from HDR requires the creation of an arti®cial geothermal reservoir (fracture) between an injection well and a production well.…”

Section: Introductionmentioning

confidence: 99%

Determination of Stress State from Focal Mechanisms of Microseismic Events Induced During Hydraulic Injection at the Hijiori Hot Dry Rock Site

Sasaki¹,

Kaieda²

2002

Pure appl. geophys.

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Ð The stress state at the Hijiori hot dry rock site was estimated based on the inversion from focal mechanisms of microseismic events induced during hydraulic injection experiments. The best ®t stress model obtained by inverting 58 focal mechanisms of seismic events simultaneously indicates that the maximum principal stress r 1 is vertical, while the minimum principal stress r 3 is horizontal and trends north-south. The average mis®t between the stress model and all the data is 6.8°. The inversion results show that the average mis®t is small enough to satisfy the assumption of homogeneity in the focal mechanism data and that the 95% con®dence regions of r 1 and r 3 are well constrained, i.e., they do not overlap, suggesting that the inversion results are acceptable. The stress estimates obtained by the focal mechanism inversion essentially agree with other stress estimates previously obtained. It is therefore concluded that the focal mechanism inversion method provides a useful tool for estimating the stress state. The hypocentral distributions of microseismic events associated with the hydraulic fracturing experiments are distributed around the plane that spreads to almost east±west from the injection wells and declines to the north at a high angle. The vertical orientation and east±west strike of the seismic events are essentially coplanar with the caldera ring-fault structure in the southern portion of the Hijiori Caldera. This indicates that tensile fractures of intact rock were not being created, but pre-existing fractures were being re-opened and developed in the direction of the maximum horizontal principal stress, although microseismic events were caused by shear failures.

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“…The shape and scale of the EGS have a significant influence on the effect of heat recovery. The concept of EGS was first proposed by Los Alamos Laboratory in the United States in the 1970s, followed by the development of the first EGS 7 heat reservoir in Fenton Hill, New Mexico in 1977, France, the UK, Japan, Australia, and other countries have also carried out EGS research 8 . In 1987, France started experimental research on EGS in the Soultz region.…”

Section: Introductionmentioning

confidence: 99%

Study on the influence law of well location and water injection displacement on heat extraction performance of EGS

Zhao

Song

Wang

et al. 2023

Energy Science & Engineering

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The enhanced geothermal system (EGS) is the key to improving the heat production efficiency of hot dry rock (HDR). Due to the existence of EGS, the reservoir produces significant heterogeneity, so the optimal design of well location and injection rate has an important influence on the heat recovery effect of an EGS. To solve this problem, a calculation model for the heat output of an EGS under multifield coupling is established in this paper, and the influence of well location and injection rate on the heat recovery effect under different scales of EGS is deeply analyzed. The results show that the production well location and injection well displacement have a great influence on the heat recovery effect under different fracture‐network scales. The larger the size of the fracture network, the larger the effective utilization area of reservoir heat recovery and the better the effect of heat recovery. The closer the production well is to the fracture network and in the direction of the fracture network, the larger the effective utilization area of reservoir heat recovery is, and the better the effect of heat recovery is. The higher the injection well displacement is, the larger the effective utilization area of reservoir heat recovery is, and the better the heat recovery effect is. The research results have important guiding significance for the optimization of the scale, well placement, and water injection displacement of the EGS in the HDR reservoir.

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Development of hot dry rock technology at the Hijiori test site

Cited by 37 publications

References 1 publication

Advanced seismic processing/imaging techniques and their potential for geothermal exploration

Advanced seismic processing/imaging techniques and their potential for geothermal exploration

Determination of Stress State from Focal Mechanisms of Microseismic Events Induced During Hydraulic Injection at the Hijiori Hot Dry Rock Site

Study on the influence law of well location and water injection displacement on heat extraction performance of EGS

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