Monitoring seismicity and crustal structure of the Canoe Reach geothermal field

监测 Canoe Reach 地热田的地震活动和地壳结构

• 批准号: 514587-2017
• 负责人: Gilbert, Hersh
• 金额: $ 1.82万
• 依托单位: University of Calgary
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=640722
• 关键词: Monitoring; seismicity; crustal; structure; Canoe

The development of the Canoe Reach geothermal field will provide an ideal resource for generating power thatcan be delivered to communities in the surrounding area and beyond. To achieve this goal, which is part oftheir Canoe Reach Energy project, Borealis GeoPower is conducting a series of studies to better understand thestructure of the geothermal field and its relation to the neighboring faults. For this project Borealis plans to drillan exploration well near Canoe Reach to better assess the thermal conditions and the structure of the shallowcrust in the area of the hot springs. Utilizing NSERC Engage funding, the applicant will collaborate withBorealis GeoPower by conducting a novel seismic investigation to identify the manner in which local faultsrespond to drilling and fluid injection during the initial development of a geothermal field. The six-monthduration of this project is timed to span from prior to drilling to post-injection, which will highlight how theregion has been modified during the initial stages of geothermal development. Using a new seismic dataset thatwill be acquired as part of this project, we will monitor the Canoe Reach geothermal field to map its seismicityand characterize its faults. Our observations will reveal details about the distribution of seismicity and faultswithin the region at previously unattainable detail. Identifying changes in seismicity or faults will provide datato Borealis to monitoring how their activities modify the region.This Engage grant will provide support for graduate students to: (1) detect local seismicity, (2) characterize theorientation of faulting associated with these earthquakes, (3) examine arrivals of seismic waves and assess iftheir propagation appears to have been affected by anisotropic seismic velocities, and (4) measure whetherthese observations exhibit temporal variations and how those relate to the timing of activities taking placeduring geothermal development. Integrating these results will provide Borealis with insights into the regionalseismicity and faults so that the Canoe Reach Energy project can be optimally developed.

独木舟河段地热田的开发将提供一个理想的发电资源，可以输送到周围地区和更远的社区。为了实现这一目标，这是他们的独木舟河段能源项目的一部分，Borealis GeoPower正在进行一系列研究，以更好地了解地热田的结构及其与邻近断层的关系。对于该项目，Borealis计划在Canoe Reach附近钻探勘探井，以更好地评估温泉地区的热条件和浅地壳结构。利用NSERC Engage资金，申请人将与Borealis GeoPower合作，进行一项新的地震调查，以确定地热田初始开发期间当地断层对钻井和流体注入的反应方式。该项目为期六个月，时间跨度从钻井前到注入后，这将突出显示该地区在地热开发的初始阶段是如何被修改的。使用一个新的地震数据集，将获得作为该项目的一部分，我们将监测独木舟河段地热田，以映射其地震和表征其故障。我们的观测将以以前无法获得的细节揭示该地区地震活动和断层分布的细节。识别地震活动或断层的变化将为Borealis提供数据，以监测他们的活动如何改变该地区。该参与赠款将为研究生提供支持：（1）探测局部地震活动，（2）描述与这些地震有关的断层的方向，（3）检查地震波的到达并评估它们的传播是否受到各向异性地震速度的影响，以及（4）测量这些观测结果是否表现出时间上的变化，以及这些变化与地热开发过程中发生的活动时间的关系。整合这些结果将为Borealis提供对区域地震活动和断层的见解，以便独木舟河段能源项目能够得到最佳开发。