层状孔隙裂隙热储最大允许水位降深研究——以德州市城区为例

Study on Maximum Allowable Drawdown of Layered Pore and Fractural Geothermal Reservoir—Setting Districts in Dezhou City as an Example

摘要:

当前，地热水最大降深如何确定方法很多，各地区因开采条件不同其最大允许降深也不完全相同。在基于地面沉降防控基础上以德州市城区为例，通过对地面沉降与深层地下地热水分析，建立起了地热水最大允许水位降深数值模型，并计算出新近纪明化镇组、馆陶组和古近纪东营组地热水开采最大允许水位降深值，确定了相似区域最大允许水位降深范围，这对层状孔隙裂隙热储地区热储最大允许水位降深确定和地热资源的可持续开发利用具有重要现实意义和理论参考价值。

Abstract:

Nowadays, how to determine the maximum allowable drawdown of layered pore and fractural geothermal reservoir is still unsettled. Based on the control ofland subsidence, taking Dezhou city as an example, through analysis on land subsidence and deep underground water, a numerical model has been established for the maximum allowable drawdown ofgeothermal water and the date of maximum allowable drawdown of the geothermal water mining of Neogene Minghuazhen group and Guantao group and Eogene Dongying group is calculated. Finally, the maximum allowable drawdown range of similar area is determined. This study has important practical significance and theoretical reference value for the study of maximum allowable drawdown of layered pore and fractural geothermal reservoir and the sustainable development and utilization of geothermal resources.