古近系是安阳次凹地热资源主要探采对象，对其内幕特征的解剖有助于地热开发利用的可持续发展。根据研究区新老钻孔及地球物理资料，通过热储的纵横向对比开展古近系热储空间展布研究，建立热储划分标准并开展有利区划，为进一步实现该地区地热资源勘探开发提供了预测靶区。结果表明，地层时代对古近系热储发育的控制作用显著，自上而下热储质量具有好-差-中的变化特点。最优热储位于沙三段（沙河街组三段）二亚段及以上层位，向上储地比及物性均有所增大，孔隙度可达20%以上。至沙三段三亚段热储质量有所变差，其下部孔隙度已不足15%。沙三段四亚段热储发育情况有所改善，孔隙度平均约17%。沙四段热储规模及物性均较差，已难以作为有效热储。受地层抬升剥蚀影响，热储的横向展布具有环状特点，整体南部优于北部，最优的Ⅰ类热储分布在HSW-JLGJ-HDR地热井以南区域，单井水量可达50 m³/h以上，Ⅱ类热储主要分布于城区中西部TLHY地热井一带，单井水量30 ~ 50 m³/h，Ⅲ类热储主要分布于次凹北部，单井水量小于30 m³/h。

Paleogene is the main exploration and extraction target of geothermal resources in Anyang Sub-sag. and dissecting its internal characteristics is helpful for the sustainable development and utilization of geothermal resources. Based on boreholes at different periods and geophysical data, thermal reservoir was compared vertically and horizontally to identify its spatial distribution. Evaluation criteria of Paleogene thermal reservoir was established and the favorable ares were divided, providing a predicted target area for further exploration and development of geothermal resources in the region. The results indicate that the the development of Paleogene thermal reservoir is mainly controlled by the strata. The quality of thermal reservoir varies from good to poor from top to bottom in Paleogene. The optimal reservoir is located in strata above the third sub-member of the third member of Shahejie Formation, with an increase in reservoir ratio and physical properties. The porosity can exceed 20%. The quality of thermal reservoir in the third sub-member of the third member of Shahejie Formation has deteriorated, with a lower porosity of less than 15%. While in the fourth sub-member the thermal reservoir quality has improved, with an average porosity of about 17%. The scale and physical properties of the forth member are poor, making it difficult to use as an effective thermal reservoir. The horizontal distribution of thermal reservoir has a circular characteristic affected by geological uplift and erosion. Reservoir in the southern part of the sub-sag has a better quality than that of the northern part. The optimal type Ⅰ thermal reservoir is distributed in the area south of the HSW-JLGJ-HDR geothermal wells, with a water volume of over 50 m³/h for single well. Type Ⅱ thermal reservoir is mainly distributed in the TLHY geothermal well area in the center-west of the sub-sag, with a water volume of 30 ~ 50 m³/h for single well. Type Ⅲ thermal reservoir is mainly distributed in the northern part of the sub-sag, with a water volume of less than 30 m³/h.