Study on the Nature of Gas Source for Permafrost-associated Gas Hydrate in Sanlutian of Muli, Qinghai

Geoscience ›› 2015, Vol. 29 ›› Issue (5): 995-1001.

• Engineering Geology and Environmental Geology • Previous Articles Next Articles

Study on the Nature of Gas Source for Permafrost-associated Gas Hydrate in Sanlutian of Muli, Qinghai

LU Zhen-quan^1,2, TANG Shi-qi^1,3, WANG Wei-chao⁴, TAN Pan-pan^2,3, LI Qing-hai⁴, LIU Wen-jin⁴, LIU Chang-ling⁵, LI Yong-hong⁴

(1.Oil & Gas Survey, China Geological Survey, Beijing 100029,China; 2.Institute of Mineral Resources, Chinese Academy of Geological Sciences,
Beijing 100037,China; 3.School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China;
4.Qinghai No.105 Coal Geological Exploration Team, Xining, Qinghai 810007,China;
5.Qingdao Institute of Marine Geology, China Geological Survey, Qingdao, Shandong 266071,China)

Online:2015-10-29 Published:2015-12-24

Abstract

Abstract:

Since the first drilling discovery of gas hydrate samples in Muli of Qilian Mountain permafrost in 2008, the gas source problem has become the focus. On the basis of previous work, the analysis of gas composition and methane carbon and hydrogen isotopes in adsorbed gases from cores, and of gas composition in headspace gas from cores was conducted in the paper. Those samples were collected from the gas hydrate drillings which were invested by Shenhua project in Sanlutian of Muli. Combined with gas composition and methane carbon and hydrogen isotope feature of gas hydrate in the relevant drillings, the analytical results are to further explore the genesis and properties of gas source for gas hydrate in this area. The results show that the gas source in the study area is of mixed genesis. The gas source is mainly composed of microbial gas partially mixed with a small amount of thermo-genic gas in the eastern part of the study area. The gas source is mainly composed of thermo-genic gas and secondarily of some microbial gas with a small amount of coal-derived gas in the middle to east of the study area. The thermo-genic gas is characteristic of crude oil cracking gas, and partly of microbial transformation gas.

Key words: permafrost, gas hydrate, gas source, nature, Sanlutian of Muli in Qinghai

CLC Number:

TE132.2
P632

[1]	WANG Shengyi, ZOU Changchun, PENG Cheng, WANG Hongcai, LU Jingan, KANG Dongju, WU Caowei, LAN Xixi, XIE Yingfeng. Quantitative Characterization of Hydrate Occurrence Mode in Marine Pore-filling Gas Hydrate Reservoirs: Constraints from Acoustic and Resistivity Log Data [J]. Geoscience, 2023, 37(01): 127-137.
[2]	GUO Zihao, LI Canping, CHEN Fengying, GOU Limin, WANG Hongtao, ZENG Xianjun, LIU Yilin, TIAN Xinyu. Effect of Methane from Natural Gas Hydrate Decomposition on Marine Life [J]. Geoscience, 2023, 37(01): 138-152.
[3]	XIE Yingfeng, LU Jing’an, KUANG Zenggui, KANG Dongju, WANG Tong, CAI Huimin. Well Logging Evaluation for Three-Phase Zone with Gas Hydrate in the Shenhu Area, South China Sea [J]. Geoscience, 2022, 36(01): 182-192.
[4]	LIU Yang, CHEN Qiang, ZOU Changchun, ZHAO Jinhuan, PENG Cheng, SUN Jianye, LIU Changling, WU Caowei. Experimental Dynamic Monitoring of Gas Hydrate Formation: A New ERT Method and Its Effectiveness Analysis [J]. Geoscience, 2022, 36(01): 193-201.
[5]	HU Gaowei, WU Nengyou, LI Qi, BAI Chenyang, WAN Yizhao, HUANG Li, WANG Daigang, LI Yanlong, CHEN Qiang. Quantitative Method for Selecting Marine Natural Gas Hydrate Production Test Targets [J]. Geoscience, 2022, 36(01): 202-211.
[6]	WANG Jinshou, LU Zhenquan, WANG Fuchun, CHEN Jing, XUE Wanwen, ZHANG Zhiqing. Study on Features of Water Soluble Hydrocarbon Components and Carbon-hydrogen Isotopes of Methane in the Kaixinling-Wuli Permafrost Region on the Northern Margin of Qiangtang Area [J]. Geoscience, 2019, 33(06): 1306-1313.
[7]	ZHOU Yalong, YANG Zhibin, ZHANG Fugui, ZHANG Shunyao, SUN Zhongjun, WANG Huiyan. The Analysis of Stability and Abnormal Reproducibility of Geochemical Exploration of Natural Gas Hydrate in Qilian Mountain [J]. Geoscience, 2019, 33(06): 1314-1324.
[8]	FAN Dongwen, LU Zhenquan, XIAO Rui, NIU Suoan, QI Lajia, WEI Yi, ZHANG Yong’an, FEI Deliang, DANG Xiaofeng. Geological Characteristics of Carboniferous-Jurassic Potential Source Rocks for Natural Gas Hydrates in Muli Depression, South Qilian Basin [J]. Geoscience, 2018, 32(05): 985-994.
[9]	ZHOU Yalong, SUN Zhongjun, YANG Zhibin, ZHANG Fugui, ZHANG Shunyao. Geochemical Characteristics and Implications of Helium and Neon in Natural Gas Hydrates Deposits in the Muli Permafrost, Qilian Mountains [J]. Geoscience, 2018, 32(05): 995-1002.
[10]	ZHANG Fugui, TANG Ruiling, YANG Zhibin, ZHU Jinghua, ZHOU Yalong, SUN Zhongjun. Geochemical Investigation and Prospective Evaluation of Natural Gas Hydrates in the Permafrost of Mohe Basin [J]. Geoscience, 2018, 32(05): 1003-1011.
[11]	ZHANG Fugui, WANG Chengwen, ZHANG Shunyao, ZHOU Yalong, TANG Ruiling. Thermoluminescence:An New Tool for Natural Gas Hydrate Exploration [J]. Geoscience, 2018, 32(05): 1080-1088.
[12]	ZHANG Shunyao, YANG Fan, ZHANG Fugui, SHI Zeming, YANG Zhibin, ZHOU Yalong, WANG Huiyan. Research on the Methane Emission and Carbon Isotope of Permafrost Wetland in Qinghai-Tibet Plateau [J]. Geoscience, 2018, 32(05): 1089-1096.
[13]	WAN Lihua, LIANG Deqing, LI Dongliang, GUAN Jin’an. Experimental Study of Thermophysical Properties of Reservoirs Bearing Gas Hydrates in Qilian Mountain Permafrost [J]. Geoscience, 2018, 32(02): 385-391.
[14]	WANG Chaoqun, DING Yingying, HU Daogong, QI Bangshen, ZHANG Yaoling, TAO Tao, WU Huanhuan. 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(01): 158-166.
[15]	LIU Jie, SUN Meijing, YANG Rui, SU Ming, YAN Heng. Diapir Conduit Fluid Mechanism and Its Relationship with Gas Hydrate Accumulations [J]. Geoscience, 2016, 30(6): 1399-1407.

Study on the Nature of Gas Source for Permafrost-associated Gas Hydrate in Sanlutian of Muli, Qinghai

PDF (PC)

Knowledge

Cited

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments