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Microseismic Monitoring of a Stimulation of HDR Reservoir at Cooper Basin, Australia, by the Japanese Team

机译：日本队伍澳大利亚Cooper Basin的HDR水库刺激的微观震动监测

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A team of Japanese researchers, who have a considerable experience in the microseismic monitoring of hydraulic stimulation/circulation of HDR/HWR/HFR reservoirs, conducted a microseismic monitoring at the Cooper Basin HDR site, Australia in the last quarter of 2003. A network of seismic instruments with 4 near surface instruments, three downhole instruments and one deep downhole instruments was set up by Geodynamics and CRIEPI. The seismic network detected approximately 32,000 triggers during injection of 20,000 m~(3) of fresh water into granitic basement over 3 weeks. The authors located the events on a semi-realtime basis using automatic software for picking, and the locations were fed back to the pumping side for determination of further injection plan. The locations of seismic events showed sub-horizontal extension of the reservoir to 1,800 m away from the injection well at a depth of around 4,500 m. The heterogeneous source migration suggests that the fractures in the stimulated zone were close to a critically stressed state.
机译：日本研究人员团队，在澳大利亚的澳大利亚Cooper盆地HDR站点进行了微震刺激/循环的微震刺激/流通的微震刺激/流通的微震监测方面进行了相当大的研究。具有4个近地表仪器，三个井下仪器和一个深井仪器的地震仪器是由地球动力学和Criepi建立的。在3周内，地震网络在注入20,000m〜（3）次淡水期间检测到约32,000次触发器。作者在半实时基础上使用自动软件进行半实时的事件，并且将位置送回泵送侧，以确定进一步的喷射计划。地震事件的位置显示储存器的副水平延伸至1,800米远离喷射井，深度约为4,500米。异构源迁移表明，刺激区中的骨折接近危重应激状态。

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