IGGCAS OpenIR  > 页岩气与地质工程院重点实验室
Geochemical and Isotopic Characteristics of Two Geothermal Systems at the Nanpu Sag, Northern Bohai Bay Basin
Wang, Ke1,2,3; Hua, Cong4; Ren, Lu5; Kong, Yanlong1,2,3; Sun, Wenjie6; Pan, Sheng7; Cheng, Yuanzhi1,2,3; Huang, Yonghui1,2,3; Tian, Fei1,2,3; Zhang, Weizun1,6; Qin, Dajun1,2,3; Ma, Feng8,9; Wang, Jianwei5; Dong, Yuexia10
2022-03-22
Source PublicationFRONTIERS IN EARTH SCIENCE
Volume10Pages:13
AbstractThe utilization of geothermal energy has gradually increased in northern China because of its unique advantages as a heating supply. However, the sustainable exploitation of geothermal energy usually requires a comprehensive investigation of the geothermal water circulation pattern prevailing at a proposed site. During the exploitation of geothermal energy resources at Nanpu Sag in northern China, thermal anomalies were found to exist in two adjacent regions: the Caofeidian and the Matouying. To reconcile the anomalies and to examine both the source of recharge water and the geothermal systems' circulation dynamics, a comprehensive investigation was performed using multiple chemical and isotopic tracers (delta H-2, delta O-18, Sr-87/Sr-86, delta C-13, and C-14). The total dissolved solids (TDS) of the geothermal water are approximately 750 mg/L and 1,250 mg/L, respectively. The geothermal water isotopes at the two sites are also different, with average values of -9.3 parts per thousand and -8.2 parts per thousand for delta O-18 and -73.4 parts per thousand and -71 parts per thousand for delta H-2, respectively. Moreover, the Sr-87/Sr-86 ratio of geothermal water at Matouying is 0.7185, which is much greater than that of Caofeidian, with an average value of 0.7088. All the results confirm the difference between the two geothermal systems and may explain the two circulation patterns of deep groundwater at Caofeidian and Matouying. The reservoir temperature obtained from theoretical chemical geothermometers is estimated to be 83-92 degrees C at the Caofeidian and 107-137 degrees C at the Matouying, respectively. The corrected C-14 age implies a low circulation rate that would allow sufficient time to heat the water at Caofeidian. In addition, we propose a geothermal conceptual model in our study area. This model could provide key information regarding the geothermal sustainable exploitation and the effective management of geothermal resources.
Keywordhydrothermal energy geochemical characteristic isotopic characteristic two geothermal systems conceptual model nanpu sag
DOI10.3389/feart.2022.844605
WOS KeywordHEAT-FLOW ; STRONTIUM ISOTOPES ; CHINA ; SUSTAINABILITY ; WATERS ; ENERGY ; AREA ; HYDROGEOCHEMISTRY ; CIRCULATION ; RESERVOIRS
Language英语
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000779408500001
PublisherFRONTIERS MEDIA SA
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/105112
Collection页岩气与地质工程院重点实验室
Corresponding AuthorKong, Yanlong; Sun, Wenjie
Affiliation1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn, Beijing, Peoples R China
2.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing, Peoples R China
3.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China
4.Jilin Univ, Coll Environm & Resources, Key Lab Groundwater Resources & Environm, Minist Educ, Changchun, Peoples R China
5.Jidong Oilfield Co PetroChina, Tangshan, Peoples R China
6.China Univ Min & Technol Beijing, Coll Geosci & Surveying Engn, Beijing, Peoples R China
7.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Continental Collis & Plateau Uplift, Beijing, Peoples R China
8.Chinese Acad Geol Sci, Inst Hydrogeol & Environm Geol, Shijiazhuang, Peoples R China
9.Minist Nat Resources, Technol Innovat Ctr Geothermal & Hot Dry Rock Exp, Shijiazhuang, Peoples R China
10.China Natl Petr Corp, Advisory Ctr, Shijiazhuang, Peoples R China
First Author AffilicationInstitute of Geology and Geophysics, Chinese Academy of Sciences
Corresponding Author AffilicationInstitute of Geology and Geophysics, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Wang, Ke,Hua, Cong,Ren, Lu,et al. Geochemical and Isotopic Characteristics of Two Geothermal Systems at the Nanpu Sag, Northern Bohai Bay Basin[J]. FRONTIERS IN EARTH SCIENCE,2022,10:13.
APA Wang, Ke.,Hua, Cong.,Ren, Lu.,Kong, Yanlong.,Sun, Wenjie.,...&Dong, Yuexia.(2022).Geochemical and Isotopic Characteristics of Two Geothermal Systems at the Nanpu Sag, Northern Bohai Bay Basin.FRONTIERS IN EARTH SCIENCE,10,13.
MLA Wang, Ke,et al."Geochemical and Isotopic Characteristics of Two Geothermal Systems at the Nanpu Sag, Northern Bohai Bay Basin".FRONTIERS IN EARTH SCIENCE 10(2022):13.
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