山东省惠民县淄角地区砂岩热储地热尾水回灌研究

Study on Geothermal Tail Water Reinjection of Thermal Reservoir in Sandstone in Zijiao Area in Huimin County in Shandong Province

在阐述山东省惠民县淄角地区地热资源开发利用现状及其地热资源类型和主要热储特征的基础上,对本次工作采集的热储岩心测试结果进行分析,研究了热储层岩性、孔隙度、砂岩颗粒直径及渗透性能对回灌的影响。对本次工作开展的砂岩热储地热尾水自然回灌、0.1MPa、0.2MPa、0.3MPa四组定压力回灌试验进行分析,重点针对回灌压力对回灌量的影响进行了研究,为研究区开展地热资源生产性回灌和进一步加快地热回灌的推广提供了参考。

On the basis of describing present condition of geothermal resources development and utilization in Zijiao area in Huimin county in Shandong province,as well as the types of geothermal resources and main characteristics of thermal reservoirs,the core test results of thermal reservoirs collected in this work have been analyzed,and the effects of thermal reservoir lithology,porosity,sandstone particle diameter and permeability on reinjection have been studied.4 groups of constant pressure reinjection test,such as under the natural reinjection,0.1MPa,0.2MPa and 0.3MPa,geothermal tailwater from sandstone thermal reservoir have been analyzed.The impact of reinjection pressure on reinjection volume has been studied.It will provide some references for carrying out productive reinjection of geothermal resources and further accelerating the popularization of geothermal reinjection in the study area.