宁夏工程技术2023，Vol.22Issue(4)：371-376,6.
银川盆地热储层温度估算
Estimation of Geothermal Reservoir Temperature in Yinchuan Basin
摘要
Abstract
The temperature of the geothermal reservoir is crucial for the development and utilization of geothermal resources,as well as for the assessment of resource quantities.In the Yinchuan Basin,the geothermal reservoirs are buried deep,making it costly to obtain the temperature of the reservoirs and related parameters through surveying techniques.In order to further reveal the characteristics of the geothermal reservoirs in the Yinchuan Basin,samples were collected from 7 geothermal wells where conditions allowed for the collection of geothermal water samples within the basin.The hydrochemical characteristics of the geothermal water samples were analyzed,and the temperature at the wellheads was measured.The temperatures of the reservoirs for these 7 geothermal wells were estimated using multiple mineral equilibrium methods and geothermometric techniques,and the estimated results were compared with the measured wellhead temperatures.The results indicate that the average total dissolved solids(TDS)in the geothermal water of the Yinchuan Basin is 9 116.43 mg/L,with the geothermal water being characterized by high mineralization.The estimated reservoir temperatures and the actual measured wellhead temperatures suggest that the temperatures of the geothermal reservoirs in the northern part of the Yinchuan Basin are higher than those in the central part.For the Neogene reservoirs,the Na-K geothermometer had the best effect,with an estimated reservoir temperature of about 52.6℃;for the Ordovician reservoirs,the chalcedony geothermometer had the best effect,allowing for a precise estimation of the reservoir temperature,estimated at about 39.1℃.关键词
热储层/水岩平衡/地热井/地热温标/银川盆地Key words
geothermal reservoir/water-rock equilibrium/geothermal wells/geothermometer/Yinchuan Basin分类
天文与地球科学引用本文复制引用
杨超,屈文岗,方嘉伟,扈志勇..银川盆地热储层温度估算[J].宁夏工程技术,2023,22(4):371-376,6.基金项目
宁夏自然科学基金项目(2021AAC03427) （2021AAC03427）
