Present Terrestrial Heat Flow Measurements of the Geothermal Fields in the Chagan Sag of the YingenEjinaqi Basin,Inner Mongolia,China

作     者：FENG Renpeng ZUO Yinhui YANG Meihua ZHANG Jiong LIU Zhi ZHOU Yongshui HAO Qingqing 

作者机构：State Key Laboratory of Oil and Gas Geology and Exploitation Chengdu University of Technology Shandong Provincial Key Laboratory of Depositional Mineralization & Sedimentary Minerals Shandong University of Science and Technology State Key Laboratory of Petroleum Resources and Prospecting China University of Petroleum Geothermal and Environmental Research Institute Institute for Global Environment Change Xi'an Jiaotong University Research Institute of Exploration and DevelopmentZhongyuan Oilfield SINOPEC Institute of Mineral Resources ResearchChina Metallurgical Geology Bureau 

出 版 物：《Acta Geologica Sinica(English Edition)》 (地质学报（英文版）)

年 卷 期：2019年第93卷第2期

页      面：283-296页

核心收录：

学科分类：0709[理学-地质学] 0819[工学-矿业工程] 070801[理学-固体地球物理学] 07[理学] 0818[工学-地质资源与地质工程] 0708[理学-地球物理学] 0816[工学-测绘科学与技术] 

基　　金：funded by the National Natural Science Foundation of China (grant no. 41374089, 41402219) the Foundation of the Geoscience Young Science Foundation of Liu Baojun (Grant No. DMSM2017003) the Sichuan Science & Technology Foundation (Grant No. 2016JQ0043) the State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing (Grant No. PRP/open-1705) 

主　　题：thermophysical parameters geothermal gradient terrestrial heat flow Chagan sag Yingen-Ejinaqi Basin 

摘      要：Owing to the lack o f terrestrial heat flow data, studying lithospheric thermal structure and geodynamics of the Yingen-Ejinaqi Basin in Inner Mongolia is limited. In this paper, the terrestrial heat flow o f the Chagan sag in the YingenEjinaqi Basin were calculated by 193 system steady-state temperature measurements of 4 wells, and newly measuring 62 rock thermal conductivity and 20 heat production rate data on basis o f the original 107 rock thermal conductivity and 70 heat production data. The results show that the average thermal conductivity and heat production rate are 2.11 ±0.28 W/(m.K) and2.42±0.25 nW/m^3 in the Lower Cretaceous o f the Chagan sag. The average geothermal gradient from the Lower Suhongtu 2 Formation to the Suhongtu 1 Fonnation is 37.6 °C/km, and that o f the Bayingebi 2 Formation is 27.4 °C/km. Meanwhile, the average terrestrial heat flow in the Chagan sag is 70.6 mW/m^2. On the above results, it is clear that there is an obvious negative correlation between the thermal conductivity o f the stratum and its geothermal gradient. Moreover, it reveals that there is a geothermal state between tectonically stable and active areas. This work may provide geothermal parameters for further research o f lithospheric thermal structure and geodynamics in the Chagan sag.