聊城地区地热资源赋存特征研究

Occurrence Features of Geothermal Resources in Liaocheng Area

山东省聊城市地热资源丰富。通过已有钻探资料及近年的勘查项目研究成果,对聊城市地热资源的地质背景、水文地质特征、地球物理化学特征等进行了综合研究分析,认为聊城地热田属于层控型低温地热田,热储层主要为新近纪明化镇组下部、馆陶组、古近纪东营组地层,该区的地温梯度主要受构造控制,断裂导热是形成本区的一个重要因素,地下热水矿化度较小,成因主要为大气降水。目前的城区开发井数少、开采量小,但从合理开发的角度分析,尚存在开采层位单一,开采深度相近,局部井段井位过密等问题,针对这些问题提出了提高开发利用水平、科学布局、禁止混层开采、积极推进地热回灌等合理的开发建议。

The geothermal resource is rich in Liaocheng of Shandong province. This article is based on the probing data and prospecting late years project research results, synthetically analyse the eology background, hydrogeology characteristic, the earth physical and chemical characteristic. We consider that Liaocheng geothermal field is a kind of tier charge low temperature geothermal field and the hot reservoir is both mainly composed of the lower part of Minghuazhen group and Guantao group in Neogene period and Dongying group in Paleogene period. In this area geothermal gradient is controlled mainly by structure. The structure heat conduct is a key factor of this area formation, the geothermal water mineralization degree is less and is mainly the atmosphere precipitation, the wells and exploit amounts is few in Liaocheng city at present, that the mined bed place is unitary, exploit depth is being closed, well place is too dense, such a series of problem have already existed, for solving these problems we have suggested the reasonable develop suggestions such as improving exploitation making use of level , science layout, forbidden exploit thoughtlessly tier, push forward the geothermal recharge actively.