基于热储法的鲁西平原地热资源评价

Evaluation of the Geothermal Resources in the Plain of West Shandong Province

鲁西平原地处山东省的西南部,热储层主要有新近系馆陶组、明化镇组,古近系东营组和奥陶系。通过野外勘察和室内分析结果,选取合理的计算参数,利用热储法等对鲁西平原地热资源进行了评价。结果表明鲁西平原地区地热资源量达1.735 5×1021J,折合标准煤5.923 3×1010t;可利用地热资源量达3.252×1020J,折合标准煤1.110×1010t;热储层百年地热水储存量为4.229×1011 m3,地热水允许开发量为4.229×1011 m3。

Luxi Plain is located in southwest of Shandong Province, where the geothermal reservoir mainlyincludes Neogene Minghuazhen, Guantao, Palaeogene Dongying and Ordovician formations. According to the field observations and laboratory analyses, reasonable parameters were selected to establish the concept model of the geothermal reservoir. Methods of evaluation of geothermal resources based on heat reservoir method were used to calculate values of geothermal resource and recovery method to calculate values of a- vailable geothermal resource. The volume method and maximum drawdown method were used to evaluate the storage capacity and exploitable yield of geothermal water. The results show that the geothermal re- sources account for 1. ？35 5 × 10^21 J, equal to 5. 923 3 × 10^10t of standard coal, and the available geothermal resources, 3. 252× 10^22 J, equal to 1. 110× 10^10 t of standard coal. The storage capacity of geothermal wa- ter reaches up to 4.229 × 10^11 m3 in one century and the exploitable yield geothermal water is 4. 229 × 10^11 m3 in total.