滨州西部地热资源计算与评价研究

Study of Geothermal Resource Evaluation in the West of Binzhou City

地热资源是一利用前景广阔的新型清洁环保能源。滨州西部地区的热储层主要为新近系馆陶组和古近系东营组。通过野外勘察和室内分析结果,选取合理的计算参数,建立了热储概念模型。在此基础上,分别利用热储法、回收率法对研究区内的地热资源量和可利用地热资源量进行计算评价,同时利用体积法、水热均衡法和开采强度法对地下热水的储存量和允许开采量进行了计算评价。结果显示,研究区地热资源量总量为6.39×1018J,折合标准煤21 911.08×104t;回收率采用25%,计算得可利用地热资源量为16.05×1017J,折合标准煤5 477.77×104t;地下热水储存量为42.53×108m3,其中允许开采量为57373.2 m3/d(开采年限为100a)。

Geothermal resources, which has a broad future for utilization, is a new clean eco-friendly energy. The geothermal reservoir in the westward area of Binzhou consists mainly of two formations： Neogene Guantao Formation and Palaeogene Dongying Formation. According to the field observation and laboratory analyses, reasonable parameters were selected to develop the geother-mal reservoir concept model. On the basis, the heat reservoir method and recovery rate method were used to calculate and evaluate the total and available geothermal resources in the study area, respectively, and the volume method and heat and water balance method and intensity of production method were used to evaluate the storage capacity and allowable withdrawal of underground hot water resources. The results showed that the total geothermal resources quantity is 6. 39 × 1018J, equal to 21 911. 08 × 104 t of standard coal, and the available geothermal resources is 16. 05 × 1017 J, equal to 5 477. 77 × 104 t of standard coal （ recovery rate is 25% ）. Also, the underground hot water storage capacity is 42.53 ×108 m3, and the allowable withdrawal is 57 373.2 m3/d based on a production life of 100 years.