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集中采灌条件下碳酸盐岩热储群井示踪试验研究
投稿时间:2020-04-23  修订日期:2020-11-19  点此下载全文
引用本文:
DOI:10.19762/j.cnki.dizhixuebao.2021041
摘要点击次数: 115
全文下载次数: 155
作者单位地址
殷肖肖 天津地热勘查开发设计院 天津市河东区卫国道189号地热院
沈健 天津地热勘查开发设计院 
赵艳婷 天津地热勘查开发设计院 
刘东林 中国地质调查局水文地质环境地质调查中心 
赵苏民 天津地热勘查开发设计院 天津市河东区卫国道189号地热院
宗振海 天津地热勘查开发设计院 
中文摘要:地热回灌是实现地热资源可持续开发的有力措施,在世界各国已获得广泛应用,在地热资源的保护、减少资源浪费、延长地热井寿命以及减少环境污染等方面具有重要意义。天津是我国开展地热回灌比较成熟的地区之一,截至2019年底,天津市基岩裂隙型热储回灌率已达79.61%。大规模集中采灌条件下热储层渗流场的变化以及是否会影响热储温度已成为热储系统研究的前沿课题。本文以天津市东丽湖地区为例,选取1.5-萘磺酸钠作为示踪剂,在2018~2019年供暖期集中采灌期间开展了群井示踪试验,结果显示,供暖期内地热井开采量(或回灌量)、水温没有明显变化,水位除受正常采灌影响外没有明显变化,热储系统基本处于稳定状态;试验中示踪剂回收率极低,开采井和回灌井之间水力联系较差,有限的优势通道中的最大流速为448.42m/d,优势通道的方向主要集中于北东向,与区内主要控热断裂沧东断裂及其次生断裂的发育方向一致;在现状开发利用模式下,不会造成该热储层温度的显著变化。这些认识对于指导北方古潜山碳酸盐岩热储的科学开发利用具有一定的现实意义。
中文关键词:碳酸盐岩热储  地热回灌  示踪试验  优势通道  热突破
 
Study on tracer test of carbonate geothermal reservoir under centralized pumping and reinjection condition
Author NameAffiliationAddress
Yin Xiaoxiao Tianjin Geothermal Exploration and Development Designing Institute 天津市河东区卫国道189号地热院
Shen Jian Tianjin Geothermal Exploration and Development Designing Institute 
Zhao Yanting Tianjin Geothermal Exploration and Development Designing Institute 
Liu Donglin Center of Hydrogeology and Environmental Geology SurveyChina Geology Survey 
Zhao Sumin Tianjin Geothermal Exploration and Development Designing Institute 天津市河东区卫国道189号地热院
ZONG Zhenhai Tianjin Geothermal Exploration and Development Designing Institute 
Abstract:Geothermal reinjection is a powerful measure to realize the sustainable development of geothermal resources,which has been widely used in various countries of the world,it is of great significance to the protection of geothermal resources,the reduction of resource waste,the extension of production well life and the reduction of environmental pollution. Tianjin is one of the earlier regions to carry out geothermal reinjection in China. By the end of 2019,the recharge rate of fractured reservoir of bedrock in Tianjin has reached 79.61% .The change of seepage field of geothermal reservoir under large-scale concentrated pumping and reinjection and whether it will cause the decrease of geothermal reservoir temperature have become the front research topic of thermal reservoir system. Taking Dongli Lake area of Tianjin City as an example,this paper selects 1.5-naphthalene sulfonate sodium as tracer,and carries out the tracer test of well group during the central pumping and reinjection in the heating season from 2018 to 2019. The results show that there are no obvious changes in geothermal well production (or reinjection) and water temperature during the heating period,and the water level has no obvious changes except for the influence of normal pumping and reinjection;The tracer recovery rate is very low in the test,which shows that the hydraulic connection between the pumping wells and the reinjection wells is poor,and the maximum flow velocity in the limited dominant channel is 448.42 m/d,and the direction of the dominant channel is mainly concentrated in the north-east direction,it is consistent with the development direction of Cangdong fault and its secondary fault,which is the main thermal-controlling fault in the area;Under the present exploitation and utilization mode,the temperature of the thermal reservoir will not change significantly. These understandings are of practical significance to guide the scientific development and utilization of carbonate reservoirs in the buried hills of north China.
keywords:Carbonate Reservoir  Geothermal Reinjection  Tracer Test  Dominant Channel  Thermal Breakthrough
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