菏泽市岩溶地热井尾水回灌影响因素及流体可采量估算研究

通过在山东菏泽城区实施地下水回灌实验,对菏泽深覆型岩溶地区地热水的回灌影响因素进行分析研究,并初步估算出评价区可采量。结果可知:深覆型岩溶地热井尾水回灌效果的影响因素主要包括回灌压力、回灌水质、回灌水温、回灌工艺和热储层岩性特征等。在回灌条件下,估算可知允许开采量为6 408. 7 m^3/d,而本次单井地热井的抽水实验开采量值81. 48 m^3/r,远低于该值,说明菏泽城区地热资源丰富。研究结果为下一步的寒武-奥陶系岩溶热储开发打下基础。

Study on influencing factors and fluid recovery capacity of karst geothermal Wells in heze city

Through in shandong heze city groundwater recharge experiment,the heze deep overburden karst region of the geothermal water recharge research and analyze influence factors,and preliminary estimate the evaluation area recovery result:deep overburden karst geothermal well tail water injection effect is the main influence factors including injection pressure injection water injection water injection technology and the thermal reservoir lithology characteristics under the condition of recharge,estimation is to allow production to 6 408. 7 m^3/d,However,the pumping experimental value of the single well geothermal well was 81. 48 m^3/r,which was far lower than this value,indicating that the results of the study on the abundant geothermal resources in heze city laid a foundation for the further development of karst thermal reservoir in the Cambrian-ordovician system.