面向地热温度动态监测的光纤实时传输技术应用研究  

Application of real-time fiber optic transmission technology for dynamic monitoring of geothermal temperature

作　　者：刘清晓 LIU Qingxiao(Beijing Institute of Geological,Beijing 100195,China)

机构地区：[1]北京市地质矿产勘查院,北京100195

出　　处：《城市地质》2024年第3期275-280,共6页Urban Geology

基　　金：北京市地勘院科创项目光纤实时传输技术在地温场监测中的应用研究资助。

摘　　要：在开发利用地热资源过程中,为达到采灌均衡,需要对地热温度开展动态监测。文章基于分布式光纤实时传输技术,对雄安新区地热井进行动态监测,揭示热储层温度及其动态演化特性。研究结果表明,光纤实时传输技术能够显著提高地热温度监测的效率和精度,为地热资源的勘探与开发提供了有力的技术支持。地热井地温梯度可以达到5.33℃·(100 m)-1,具有良好的地热条件。由于非供暖期热恢复特性,储层温度会有一定上升,然后趋于稳定。从光纤监测的储层深度和时间演化方面,储层热量受其他地热群井开采的影响,其温度在供暖期会下降。该光纤实时传输技术可以实现动态测温的低成本和高效率,可以进一步推广到其他地热田监测。In order to balance between extraction and injection of geothermal resources during development and utilization,dynamic monitoring of geothermal wells is required.Based on distributed optical fiber real-time transmission technology,this study conducts dynamic monitoring of geothermal wells in Xiong'an New Area to reveal the characteristics of temperature and dynamic evolution for thermal reservoirs.The research results show that optical fiber real-time transmission technology can significantly improve the efficiency and accuracy of geothermal temperature monitoring,thus providing powerful support for the development of geothermal energy.The geothermal gradient of the geothermal well can reach 5.33℃/100,thus with good geothermal conditions.Due to the thermal recovery characteristics during the non-heating period,the reservoir temperature will first rise to a certain extent and then stabilize.From the perspective of reservoir depth and time evolution monitored by optical fiber,the temperature of the reservoir will decrease during the heating period due to the exploitation of other geothermal wells.This optical fiber real-time transmission technology can achieve low-cost and high-efficiency for dynamic temperature measurement,and can be further extended to other geothermal field monitoring.

关 键 词：地热能 光纤测温 非供暖期 雄安新区 温度演化 

分 类 号：P314[天文地球—固体地球物理学]