Induced seismicity associated with enhanced geothermal systems
Induced seismicity associated with enhanced geothermal systems
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DOI：
10.1016/j.geothermics.2007.03.003
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发表时间：
2007-06-01
期刊：
影响因子：
3.9
通讯作者：
Asanuma, Hiroshi
中科院分区：
文献类型：
--
作者：
Majer, Ernest L.;Baria, Roy;Asanuma, Hiroshi
增强型地球物理系统有可能对世界能源存量作出重大贡献。然而，与环境商品和服务有关的一个有争议的问题是诱发地震活动或微震活动的影响，这是造成全世界至少两个环境商品和服务项目推迟和面临取消威胁的原因。虽然微震活动实际上对作业或周围社区几乎没有（或没有）不利的物理影响，但公众仍然关注与当前和未来的环境地质系统作业有关的地震活动的数量和强度。本文的主要目标是提出一个最新的审查已经知道的地震活动性引起的EGS的创建和操作过程中，在我们的知识，一旦解决，应导致更好地了解产生的事件的机制的差距。一些案例还说明了一些技术和公众接受问题。我们的结论是，EGS引起的地震活动不需要构成威胁的地热能资源的开发，如果进行适当的选址，社区问题得到充分处理和运营商了解的基本机制，造成的事件。诱发地震活动确实可以证明是有益的，因为它可以用来监测环境地质系统运作的有效性，并揭示地热储层的过程。(c)2007 CNR。由爱思唯尔有限公司出版。保留所有权利。
Enhanced Geothermal Systems (EGS) have the potential to make a significant contribution to the world energy inventory. One controversial issue associated with EGS, however, is the impact of induced seismicity or microseismicity, which has been the cause of delays and threatened cancellation of at leasttwo EGS projects worldwide. Although microseismicity has in fact had few (or no) adverse physical effects on operations or on surrounding communities, there remains public concern over the amount and magnitude of the seismicity associated with current and future EGS operations. The primary objectives of this paper are to present an up-to-date review of what is already known about the seismicity induced during the creation and operation of EGS, and of the gaps in our knowledge that, once addressed, should lead to an improved understanding of the mechanisms generating the events. Several case histories also illustrate a number of technical and public acceptance issues. We conclude that EGS-induced seismicity need not pose a threat to the development of geothermal energy resources if site selection is carried outproperly, community issues are handled adequately and operators understand the underlying mechanisms causing the events. Induced seismicity could indeed prove beneficial, in that it can be used to monitor the effectiveness of EGS operations and shed light on geothermal reservoir processes. (c) 2007 CNR. Published by Elsevier Ltd. All rights reserved.