天津市雾迷山组热储层温度场动态特征分析

摘要

温度是地热流体的一项重要属性,地热流体大规模的开采及回灌是否引起热储温度场变化,导致地热流体温度的降低,一直是地热开发过程中比较关注的问题. 雾迷山组热储由于良好的储水和导水条件,是天津市地热资源开发主要的基岩热储层. 调查发现:天津市目前有雾迷山组地热井达一百七十多眼,广泛分布于宁河 -宝坻断裂以南的平原区,年开采量近两千万方,回灌量近一千万方. 基于多年的动态监测成果及物探测井成果,初步探究雾迷山组热储层地温场分布特征以及温度场在地热资源开采和回灌影响下的动态变化特征.%Temperature is an important property of the geothermal fluid, Whether large-scale mining and recharge of geo-thermal will lead to the change of temperature field and decline in geothermal fluid temperature, have been attracting lots of at-tention in the process of geothermal development. Because of good water storage and strong runoff ability, The Wumishan for-mation to be the main mining bedrock reservoir in Tianjin. Through surveying, we found there are more than one hundred and seventy Wumishan formation wells that widely distributed in the southern plain of Ninghe-Baodi fault in Tianjin, and mined nearly twenty million stere geothermal and recharged nearly ten million stere geothermal per year at present. Based on years of dynamic monitoring and geophysical data, the paper analyzed the temperature field distribution of Wumishan formation and the dynamic change of temperature field under the influence of mining and recharge geothermal.