立陶宛的Silurian屏障礁:水库特性和低热地热热潜力
Ieva Kaminskaite-Baranauskiene1, Anna Cichon-Pupienis1,2, Pijus Makauskas3
1Vilnius University, Naugarduko st. 24, 03225, Vilnius, Lithuania.
Heliyon
|February 29, 2024
概括
立陶宛的Silurian珊瑚礁由于水库的异质性和低流量,具有有限的地热潜力. 虽然库迪尔卡和帕瓦萨里斯等一些地点显示出小型地热项目的潜力,但广泛应用不太可能.
科学领域:
- 地质地质地质地质地质地
- 地质物理学 地质物理学
- 地热能源 地热能源
背景情况:
- 立陶宛的Silurian屏障礁区,历来是石油勘探目标,正在重新评估地热潜力.
- 自20世纪60年代以来,先前的石油和天然气勘探工作提供了大量的地质和地物理数据.
研究的目的:
- 审查和重新分析立陶宛Silurian珊瑚礁内地热能潜力的现有地质和地物理数据.
- 评估利用现有井基础设施用于地热能源提取的可行性.
主要方法:
- 分析石油和天然气勘探井的地质和地物理数据.
- 评估各种珊瑚礁结构的热量生产率和储热量潜力.
- 对于潜在的双井配置的热突破时间的建模.
主要成果:
- 在西卢里亚珊瑚礁中,热量产生率有很大差异,从0.000044到0.24MWh不等.
- 库迪尔卡结构显示了最大的储热潜力 (250 GWh),有6个井的潜力.
- 帕瓦萨里斯珊瑚礁表现出最好的地热容量每井双重 (0.241MWh),但受到水文地理封闭和水库大小的限制.
- 其他珊瑚礁由于体积小,隔离和流量低,热潜力较低.
- 有效的水库厚度通常小于20米,高异质性影响双重回收因子.
- 低流量和狭窄的钻井直径降低了再利用现有井的经济可行性.
结论:
- 立陶宛中部的Silurian珊瑚礁显示出大规模地热能源应用的整体潜力较低.
- 在库迪尔卡和帕瓦萨里斯地区,小规模的地热项目可能是可行的.
- 水库的异质性,有效厚度有限,以及水文地质因素限制了地热能源的提取.
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