水力压裂体积与杜维纳剧中诱导的地震生产率有关
R Schultz1, G Atkinson2, D W Eaton3
1Alberta Geological Survey, 4999 98 Avenue, Edmonton, Alberta, Canada. ryan.schultz@aer.ca.
概括
在阿尔伯塔省福克斯溪的水力压裂引发了更多地震, 地质因素也显著影响地震活动,帮助预测潜在事件.
科学领域:
- 地震学
- 石油工程
- 地质学
背景情况:
- 2013年12月,阿尔伯塔省福克斯溪附近的地震频率显著增加.
- 这种地震活动的激增直接与水力压裂的过程有关.
研究的目的:
- 调查水力压裂注入参数与由此产生的地震性之间的相关性.
- 确定导致福克斯溪地区地震发生的关键因素.
主要方法:
- 使用全面的水力压裂数据库来分析注入参数.
- 进行空间相关分析以评估地质因素的影响.
- 应用地震指数修改的频率-幅度分布进行预测.
主要成果:
- 引发的地震与涉及大量注入量 (10^4到10^5立方米) 的完成密切相关.
- 地震效率与注入量呈现线性扩展关系.
- 喷射压力和速度与地震反应的关联很小,而地质因素起到了重要作用.
结论:
- 喷射量和地质因素共同解释了约96%的诱导地震速率的变化.
- 开发的框架,包括地震指数,为预测福克斯溪附近的诱导地震提供了一种方法.
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