摘要
以往地热资源调查评价过程中,一般单井稳定流抽水试验直接采用试验测量静水位埋深、水温用于公式计算,求取热储水文地质参数。但实际热储抽水试验过程中温度会随着试验时间延续而不断升高,而水的密度与温度变化却成反比,尽管井内水位上升或保持不变,但热储压力却下降,这种现象称之为“井筒效应”。对抽水试验热储水位、水温校正后消除“井筒效应”,再进行水文地质参数计算,能够提高热储可采资源量评价精度,对今后类似热储水文地质参数计算及可采资源量评价起到借鉴作用。
In the previous investigation and evaluation of geothermal resources,the hydrogeological parameters of thermal storage were generally calculated using the hydrostatic depth and water temperature directly measured by the single well steady flow pumping test.However,in the actual test,the temperature will continue to increase with the test time,while the density of water is inversely proportional to the temperature change.Although the water level in the well rises or remains constant,the thermal storage pressure falls,resulting in the"wellbore effect".Therefore,the thermal storage level and water temperature of the pumping test are corrected to eliminate the"wellbore effect"in this paper.And the hydrogeological parameters calculated on this basis can improve the evaluation accuracy of recoverable thermal storage resources.This method can be used as a reference for the calculation of hydrogeological parameters of similar thermal storage and the evaluation of recoverable resources in the future.
作者
罗成
Luo Cheng(Huasheng Hydrogeological Exploration Co.,Ltd,CNACG,Handan,Hebei 056000)
出处
《中国煤炭地质》
2022年第S01期121-125,共5页
Coal Geology of China
关键词
地热资源
热储压力
水文地质参数计算
开采资源量
geothermal resources
thermal storage pressure
calculation of hydrogeological parameters
mining resources
