| Institute of Geomechanics, Chinese Academy of Geological Sciences | Host |
| Citation: |
Shengsheng ZHANG, Lei ZHANG, Chengcheng TIAN, Jingshou CAI, Baochun TANG. OCCURRENCE GEOLOGICAL CHARACTERISTICS AND DEVELOPMENT POTENTIAL OF HOT DRY ROCKS IN QINGHAI GONGHE BASIN[J]. Journal of Geomechanics, 2019, 25(4): 501-508. doi: 10.12090/j.issn.1006-6616.2019.25.04.048
|
OCCURRENCE GEOLOGICAL CHARACTERISTICS AND DEVELOPMENT POTENTIAL OF HOT DRY ROCKS IN QINGHAI GONGHE BASIN
-
Abstract
The Gonghe Basin is rich in hot dry rock geothermal resources. In order to enhance the theoretical understanding of the genesis of hot dry rock geothermal resources in the Gonghe Basin and further promote the exploration of hot dry rock resources, a comprehensive analysis of the genesis of hot dry rock resources in the Gonghe Basin is made from the heat source mechanism, caprock conditions and reservoir characteristics. Firstly, combined with regional geological structure analysis, geothermal geological survey, geophysical (aeromagnetic, earthquake) interpretation, four hot dry rock exploration wells with the depth of 2927-3705 m were drilled in the Gonghe Basin. At 3705 m, the high-quality hot dry rock resources of 236℃ were obtained, which was the first major breakthrough in the exploration of hot dry rock geothermal resources in China's non-modern volcanic areas. Secondly, radioactivities of granites from different depths were tested. The results show that the radioactive elements content of U, Th and K in the granitoids of the Gonghe Basin is slightly higher than the background value of the earth, and the radioactive heat generation rate is relatively low, the contribution of radioactive heat to the heat source of hot dry rock is less and the heat source may come from the melt in the Crust. Thirdly, based on geological data analysis and aeromagnetic interpretation, the potential hot dry rock distribution area of the Gonghe Basin is about 1.4×104 km2. Finally, the volumetric method is used to evaluate the potential of hot dry rock resources in the Gonghe Basin. The results show that the total conservative and static amount of hot dry rock resources in the 3.0-6.0 km range of the Gonghe Basin is 8974.74×1018 J, and the converted standard coal can reach 306.619 billion tons, showing the broad prospects for development and utilization.-
Keywords:
- Gonghe Basin /
- hot dry rock /
- geothermal gradient /
- granite
-
-
References
WANG G L, LIN W J, ZHANG W, et al. Research on formation mechanisms of hot dry rock resources in China[J]. Acta Geologica Sinica (English Edition), 2016, 90(4):1418-1433. doi: 10.1111/1755-6724.12776 许天福, 张炜.增强型地热工程国际发展和我国前景展望[J].石油科学通报, 2016, 1(1):38-44. XU Tianfu, ZHANG Wei. Enhanced geothermal systems:international developments and China's prospects[J]. Petroleum Science Bulletin, 2016, 1(1):38-44. (in Chinese with English abstract) 付亚荣, 李明磊, 王树义, 等.干热岩勘探开发现状及前景[J].石油钻探工艺, 2018, 40(4):526-540. FU Yarong, LI Minglei, WANG Shuyi, et al. Present situation and prospect of hot dry rock exploration and development[J]. Oil Drilling & Production Technology, 2018, 40(4):526-540. (in Chinese with English abstract) 蔺文静, 刘志明, 马峰, 等.我国陆区干热岩资源潜力估算[J].地球学报, 2012, 33(5):807-811. LIN Wenjing, LIU Zhiming, MA Feng, et al. An estimation of HDR resources in China's mainland[J]. Acta Geoscientia Sinica, 2012, 33(5):807-811. (in Chinese with English abstract) 汪集旸, 胡圣标, 庞忠和, 等.中国大陆干热岩地热资源潜力评估[J].科技导报, 2012, 30(32):25-31. doi: 10.3981/j.issn.1000-7857.2012.32.002 WANG Jiyang, HU Shengbiao, PANG Zhonghe, et al. Estimate of geothermal resources potential for hot dry rock in the continental area of China[J]. Science & Technology Review, 2012, 30(32):25-31. (in Chinese with English abstract) doi: 10.3981/j.issn.1000-7857.2012.32.002 严维德, 王焰新, 高学忠, 等.共和盆地地热能分布特征与聚集机制分析[J].西北地质, 2013, 46(4):223-230. doi: 10.3969/j.issn.1009-6248.2013.04.022 YAN Weide, WANG Yanxin, GAO Xuezhong, et al. Distribution and aggregation mechanism of geothermal energy in Gonghe basin[J]. Northwestern Geology, 2013, 46(4):223-230. (in Chinese with English abstract) doi: 10.3969/j.issn.1009-6248.2013.04.022 张学亭, 杨生德, 杨站君, 等.青海省板块构造研究-1:100万青海省大地构造图说明书[M].北京:地质出版社, 2007. ZHANG Xueting, YANG Shengde, YANG Zhanjun, et al. The study of Qing-hai tectonics plates-1:1000000 tectonic map specification[M]. Beijing:Geological Publishing House, 2007. (in Chinese) 童珏, 罗银飞, 袁有靖, 等.青海省东部地区干热岩靶区分析[J].工程勘察, 2018, 46(11):36-42. TONG Jue, LUO Yinfei, YUAN Youjing, et al. Analysis on target site selection for hot dry rock in east of Qinghai Province[J]. Geotechnical Investigation & Surveying, 2018, 46(11):36-42. (in Chinese with English abstract) 严维德.共和盆地干热岩特征及利用前景[J].科技导报, 2015, 33(19):54-57. doi: 10.3981/j.issn.1000-7857.2015.19.008 YAN Weide. Characteristics of Gonghe Basin hot dry rock and its utilization prospects[J]. Science & Technology Review, 2015, 33(19):54-57. (in Chinese with English abstract) doi: 10.3981/j.issn.1000-7857.2015.19.008 滕吉文, 司芗, 庄庆祥, 等.漳州盆地精细壳、幔异常结构与潜在干热岩探讨[J].地球物理学报, 2019, 62(5):1613-1632. TENG Jiwen, SI Xiang, ZHUANG Qingxiang, et al. Fine structures of crust and mantle and potential hot dry rock beneath the Zhangzhou Basin[J]. Chinese Journal of Geophysics, 2019, 62(5):1613-1632. (in Chinese with English abstract) 甘浩男, 王贵玲, 蔺文静, 等.中国干热岩资源主要赋存类型与成因模式[J].科技导报, 2015, 33(19):22-27. doi: 10.3981/j.issn.1000-7857.2015.19.002 GAN Haonan, WANG Guiling, LIN Wenjing, et al. Research on the occurrence types and genetic models of hot dry rock resources in China[J]. Science & Technology Review, 2015, 33(19):22-27. (in Chinese with English abstract) doi: 10.3981/j.issn.1000-7857.2015.19.002 Massachusetts Institute of Technology. The future of geothermal energy:impact of enhanced geothermal systems (EGS) on the United States in the 21st Century[M]. Cambridge:MIT Press, 2006. 阮传侠, 冯树友, 沈健, 等.天津滨海新区地热资源循环利用研究:馆陶组热储回灌技术研究与示范[J].地质力学学报, 2017, 23(3):498-506. doi: 10.3969/j.issn.1006-6616.2017.03.017 RUAN Chuanxia, FENG Shuyou, SHEN Jian, et al. A study on the recycling utilization of geothermal resources in Binhai new area, Tianjin:study and demonstration of thermal storage and reinjection technology of guantao reservoir[J]. Journal of Geomechanics, 2017, 23(3):498-506. (in Chinese with English abstract) doi: 10.3969/j.issn.1006-6616.2017.03.017 吴云霞, 吕凤军, 邢立新, 等.独山城地区多元信息干热岩预测模型[J].吉林大学学报(地球科学版), 2019, 49(3):880-892. WU Yunxia, LV Fengjun, XING Lixin, et al. Prediction model of multiple information dry-hot rock in Dushancheng area[J]. Journal of Jilin University (Earth Science Edition), 2019, 49(3):880-892. (in Chinese with English abstract) TANNOCK L, 王亚, 李景富, 等.广东河源断裂带地热成因及与构造关系初探[J].地质力学学报, 2019, 25(3):400-411. TANNOCK L, WANG Ya, LI Jingfu, et al. A preliminary study on the mechanics and tectonic relationship to the geothermal field of the heyuan fault zone in Guangdong province[J]. Journal of Geomechanics, 2019, 25(3):400-411. (in Chinese with English abstract) 荆铁亚, 赵文韬, 郜时旺, 等.干热岩地热开发实践及技术可行性研究[J].中外能源, 2018, 23(11):17-22. JING Tieya, ZHAO Wentao, GAO Shiwang, et al. Practice and technical feasibility study of hot dry rock geothermal development[J]. Sino-Global Energy, 2018, 23(11):17-22. (in Chinese with English abstract) -
Access History
Figures(5)
Tables(2)
Export File
Citation
Shengsheng ZHANG, Lei ZHANG, Chengcheng TIAN, Jingshou CAI, Baochun TANG. OCCURRENCE GEOLOGICAL CHARACTERISTICS AND DEVELOPMENT POTENTIAL OF HOT DRY ROCKS IN QINGHAI GONGHE BASIN[J]. Journal of Geomechanics, 2019, 25(4): 501-508. doi: 10.12090/j.issn.1006-6616.2019.25.04.048
Format
Content
DownLoad:
- Figure 1. The brief map of the location and regional geological structure of the research area
- Figure 2. The magnetic anomaly distribution map of the Gonghe Basin and surrounding area
- Figure 3. Thermal conductivity distribution with depth in Qiabuqia of the Gonghe Basin
- Figure 4. The EW directional geothermal geological profile in Qiabuqia of the Gonghe Basin (The profile location shown in Fig. 2)
- Figure 5. The schematic map of surface hot spring distribution in the Gonghe Basin