Application of natural thermoluminescence measurement technique in natural gas hydrate exploration in permafrost areas
WANG Hui-Yan1(), TANG Rui-Ling1(), BI Jing2
1. Institute of Geophysical and Geochemical Exploration, Chinese Academy of Geological Sciences, Langfang 065000, China 2. Shandong GEO-Surveying & Mapping Institute, Jinan 250014, China
Since natural gas hydrates (NGHs) in permafrost areas feature complex formation mechanisms and multiple sources, there is an urgent need to develop multiple techniques for micro-leakage information capture in order to increase the exploration success rate. This study applied the natural thermoluminescence measurement technique to NGH exploration in a permafrost area for the first time. Specifically, it tested the thermoluminescence intensity in soil samples from the Muli permafrost area of the Qilian Mountains using an RGD-6 thermoluminescent dosimeter. Then, it summarized the heating procedure for NGH exploration in the area, as well as size fractions for sampling. The results show that the soil samples from the Muli permafrost area demonstrated optimal size fractions for sampling ranging from -60~100 meshes, an optimal heating rate of 5 ℃/s, and an optimal heating range of 50~400 ℃. Based on the anomaly characteristics of the natural thermoluminescence intensity in soil samples, this study determined the anomaly boundary of NGHs on the surface of the permafrost area. It revealed that the natural thermoluminescence intensity displayed anomalies on the top, which correspond well to the hydrocarbon anomaly mode. The natural thermoluminescence measurements of soil, unaffected by microorganisms and boasting high sensitivity, can be popularized as a promising method for NGH explorations in permafrost areas.
王惠艳, 唐瑞玲, 毕婧. 天然热释光测量技术在多年冻土区天然气水合物勘查中的应用[J]. 物探与化探, 2024, 48(1): 24-30.
WANG Hui-Yan, TANG Rui-Ling, BI Jing. Application of natural thermoluminescence measurement technique in natural gas hydrate exploration in permafrost areas. Geophysical and Geochemical Exploration, 2024, 48(1): 24-30.
Siegel F R, Hu D, Vaz J E, et al. Areal thermoluminescence radiometric survey of Shengping oil field using burie:Dosimeters[J]. Oil and Gas Journal, 1989, 3(1):53-57.
[2]
Siegel F R, Chen R, Vaz J E, et al. The integrated radiation environment at well sites-An adjunct to petroleum exploration[J]. Oil and Gas Journal, 1997, 10(6):91-96.
[3]
Wang Z, Qin D, Zhuang G, et al. Application of thermoluminescence dosimetry in the exploration for oil and gas-using chinese gr-200 lif (mg,cu,p) tld[J]. Radiation Protection Dosimetry, 1993, 47(1-4):323-326.
doi: 10.1093/oxfordjournals.rpd.a081760
[4]
Zheng G, Kang Y. Thermoluminescence dating of jinniushan archaeological site[J]. Acta Anthropologica Sinica, 1994, 13:357-359.
[5]
王平, 熊盛青. 油气放射性勘查原理方法与应用[M]. 北京: 地质出版社, 1997:3-10.
[5]
Wang P, Xiong S Q. Principles and application of radio active exploration for oil and gas[M]. Beijing: Geological Publishing House, 1997:3-10.
[6]
Xie X J. Local and regional surface geochemical exploration for oil and gas[J]. Journal of Geochemical Exploration, 1992, 42:25-42.
doi: 10.1016/0375-6742(91)90059-4
Zhang Z P, Zhu Y H, Su X. Characteristics of thermoluminescence from sediments and its implications in the Qiangtang Basin,Qinghai-Tibet Plateau[J]. Geoscience, 2008, 22(3):452-456.
Zhang Z P. A primary discussion in the character of acidolytical hydrocarbon and thermoluminescence related with gas hydrate in Qiangtang Basin[D]. Beijing: China University of Geosciences(Beijing), 2006.
Wang N P, Wang P, Cheng Y X. Principle of quaternary sediment natural thermoluminescence survey for prospecting oil reservoir and its application[J]. Geoscience, 1996, 10(4):543- 549.
Wang N P, Wang P, Hou S L, et al. Measurement technique of natural themoluminescence of quaternary sediment and its application to prospecting of hydrocarbon reservoirs in Caoqiao oilfield,Shandong Province,East China[J]. Earth Science Frontiers, 2003, 10(1):205-211.
Zheng G W, Zhu Z L, Ren X S, et al. The application research progress of thermoluminescence technique to the oil and gas exploration[J]. Progress in Natural Science, 2003, 13(9):897-900.
[15]
Zhang F, Yang Z, Zhou Y, et al. Accumulation mechanism of natural gas hydrate in the Qilian Mountain permafrost,Qinghai,China[J]. Front.Energy Res., 2022, 10:1006421.
[16]
周幼吾, 郭东信, 邱国庆, 等. 中国冻土[M]. 北京: 科学出版社, 2000.
[16]
Zhou Y W, Guo D X, Qiu G Q, et al. Frozen ground of China[M]. Beijing: Science Press, 2000.
Zhu Y H, Liu Y L, Zhang Y Q. Formation conditions of gas hydrates in permafrost of the Qilian Mountains,Northwest China[J]. Geological Bulletin of China, 2006, 25(1):58-63.
Wang C Q, Ding Y Y, Hu D G, et al. Temperature monitoring results for gas hydrate borehole DK-9 and thickness of gas hydrate stability zone in the Qilian Mountains permafrost[J]. Geoscience, 2017, 31(1):158-166.
Zhu Y H, Zhang Y Q, Wen H J, et al. An overview of the scientific drilling project of gas hydrate in Qilian Mountain Permafrost,northwestern China[J]. Geological Bulletin of China, 2011, 30(12):1816-1822.
Huang X, Zhu Y H, Wang P K, et al. Hydrocarbon gas composition and origin of core gas from the gas hydrate reservoir in Qilian Mountain permafrost[J]. Geological Bulletin of China, 2011, 30(12):1851-1856.
Zhang F G, Qin A H, Zhu Y H, et al. A discussion on geochemical migration mechanism of natural gas hydrate in Qilian Mountain permafrost[J]. Mineral Deposits, 2020, 39(2):326-336.
Zhou Y L, Yang Z B, Zhang F G, et al. The analysis of stability and abnormal reproducibility of geocheemical exploration of natural gas hydrate in Qilian Mountain[J]. Geoscience, 2019, 33(6):1314-1324.
Sun Z J, Fang H, Liu J X, et al. An exploration model of gas hydrate in Sanlutian permafrost region,Qilian Mountain[J]. Geophysical and Geochemical Exploration, 2017, 41(6):998-1004.
