Petroleum Reservoir Evaluation and Development >
2022 , Vol. 12 >Issue 6: 843 - 849
DOI: https://doi.org/10.13809/j.cnki.cn32-1825/te.2022.06.002
Vertical distribution characteristics analysis of shallow stratum geothermal temperature field in the Southeastern Hancheng Fault, Guanzhong Basin
Received date: 2022-03-31
Online published: 2022-12-02
Inorder to further study the vertical distribution characteristics of the shallow geothermal temperature field in the southeastern of Hancheng, Guanzhong Basin. The authors used temperature measuring cable, which is single line multipoint communication, to monitor stratum temperature in a depth of 50 meters for one year in Hancheng. The results shows that the vertical distribution of shallow geothermal temperature is regularity and obviously layered, it can be differentiated as variable temperature zone, constant temperature zone and increased temperature zone. The buried depth of the bottom of variable temperature zone is 15 m, it is significantly affected by climate. Compared with the temperature change of atmosphere, the variable temperature zone has a hysteresis phenomenon. The constant temperature zone depth range is between 15~35 m, and the average temperature is 15.3 ℃, 1.8 ℃ higher than the annual average atmospheric temperature in the same region. The increased temperature zone is below 35 m, and the geothermal gradient is 3.25 ℃/hm within 35~100 m, which is higher than surrounding area. It is concluded that there are three reasons: firstly, the Hancheng fault is heat conduction channel to carry deep heat to shallow formations; secondly, the groundwater runoff intensity is relatively weak to save heat; thirdly, the loose stratum of quaternary and neogene is thick, which can reduce thermal conduction.
Yuze XUE , Yugui ZHANG , Yuanhong HAN , Tinghui ZHANG , Chao XUE , Juhui XIAO , Zhenzhou PENG , Bin GUO . Vertical distribution characteristics analysis of shallow stratum geothermal temperature field in the Southeastern Hancheng Fault, Guanzhong Basin[J]. Petroleum Reservoir Evaluation and Development, 2022 , 12(6) : 843 -849 . DOI: 10.13809/j.cnki.cn32-1825/te.2022.06.002
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