稳态测温方法在天津地热动态监测中的应用  

Application of steady temperature measurement in geothermal dynamic monitoring in Tianjin

作　　者：宗振海[1] 王平 王冰[1] 高新智[1] 蔡芸[1] ZONG Zhen-hai1, WANG Ping2, WANG Bing1, GAO Xin-zhi1, CAI Yun1(1. Tianjin Geothermal Exploration and Development-Designing Institute, Tianjin 300250; 2. Tianjin Geological Data Archives, Tianjin 30000)

机构地区：[1]天津地热勘查开发设计院,天津300250 [2]天津市地质资料馆,天津300000

出　　处：《地质调查与研究》2018年第3期228-231,共4页Geological Survey and Research

基　　金：天津市地热资源动态监测(国土房任[2016]2号)

摘　　要：稳态测温是了解热储温度在垂向上变化规律的有效方法。本文通过分析多年稳态测温在动态监测中的实际应用,证实该方法可用于研究监测地热回灌对热储层温度的影响,并成功监测到由回灌引起的回灌井热储层低温段。分析后认为,回灌井储层温度受季节性回灌影响明显,在冬季回灌后和次年冬季回灌前分别达到极小值和极大值;在回灌温度和回灌量基本稳定的情况下,其年际变化尚不明显,经过15年的连续回灌,尚未对周边开采井温度造成明显影响,开采回灌井的距离较为合理。Steady temperature measurement is an effective method to understand the vertical variation of thermal reservoir temperature. By analyzing the practical application of steady temperature measurement in dynamic mon- itoring for many years, it is proved that this method can be used to study the influence of geothermal recharge on the temperature of thermal reservoir. We had successfully monitored the low temperature section of reinjecting well caused by reinjection. It is concluded that the reinjecting well reservoir temperature was affected by the sea- sonal changes. The reservoir temperature reached the minimum value after winter reinjection, and it reached the maximum value before winter reinjection of the following year. When the reinjection temperature and reinjection quality are stable, the interannual variation is not obvious. After 15 years of continuous reinjection, it has not caused significant impact on the temperature of surrounding extraction wells. So the distance between extraction surrounding well and reinjecting well was reasonable.

关 键 词：稳态测温 天津 地热资源 动态监测 

分 类 号：P641.1[天文地球—地质矿产勘探]