Results 21 to 30 of about 3,306 (156)

Integrated Assessment of Marine-Continental Transitional Facies Shale Gas of the Carboniferous Benxi Formation in the Eastern Ordos Basin

Energies, 2021
In the Benxi Formation of the Carboniferous system of the Upper Paleozoic in the Ordos Basin, there are many sets of coal measures dark organic-rich shale, being marine continental transitional facies, with significant unconventional natural gas ...
Weibo Zhao, Zhigang Wen, Hui Zhang, Chenjun Wu, Yan Liu, Huanxin Song, Liwen Zhang, Yingyang Xi, Lu Sun   +8 more
doaj   +1 more source

Significance of source rock heterogeneities: A case study of Mesoproterozoic Xiamaling Formation shale in North China

Petroleum Exploration and Development, 2017
Taking Mesoproterozoic Xiamaling Formation, Northern China as an example, the heterogeneities of source rock in different scales and hydrocarbon microscopic occurrence are studied based on observation of outcrops and observation with microscopy, and ...
Xiaomei WANG, Shuichang ZHANG, Huajian WANG, Jin SU, Kun HE, Yu WANG, Xiaoqi WANG   +6 more
doaj   +1 more source

Isotopic geochemical characteristics and identification indexes of shale gas hydraulic fracturing flowback/produced water

Journal of Natural Gas Geoscience, 2022
China is rich in shale gas resources, which are mainly distributed in densely populated southern marine carbonate areas. The geological and surface conditions are complex, the ecological environment is fragile, and water resources are scarce or unevenly ...
Yunyan Ni, Limiao Yao, Jianli Sui, Jianping Chen   +3 more
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Stable carbon and hydrogen isotopic characteristics of natural gas from Taibei sag, Turpan-Hami Basin, NW China

Petroleum Exploration and Development, 2019
Turpan-Hami Basin is a major petroliferous basin in China. To date the natural gas exploration is concentrated in the Taibei sag. The origin and source of natural gas in the Taibei sag has long been controversial.
Yunyan NI, Fengrong LIAO, Deyu GONG, Lixin JIAO, Jinliang GAO, Limiao YAO   +5 more
doaj   +1 more source

Mantle contributions to global tungsten recycling and mineralization

Communications Earth & Environment
Tungsten deposits are typically associated with crust-derived evolved granitoids. Whether the mantle has contributed to tungsten mineralization, however, is unknown.
Jie-Hua Yang, Jing-Hua Wu, Mei-Fu Zhou, Rui-Zhong Hu, Jun-Hong Zhao, Anthony E. Williams-Jones, Qian Hu, Run-Sheng Yin   +7 more
doaj   +1 more source

Problems with the application of heptane and isoheptane values as light hydrocarbon parameters

Petroleum Exploration and Development, 2010
The light hydrocarbon data from 772 oil samples in 25 oilfields, together with GC/MS data from 338 saturated hydrocarbon samples were used to discuss the relationship between kerogen types, using the heptane value, isoheptane value and C29 sterane 20S/(S+
Wang Peirong, Xu Guanjun, Zhang Dajiang, Xiao Tingrong, Ren Dongling   +4 more
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The oxic degradation of sedimentary organic matter 1400 Ma constrains atmospheric oxygen levels [PDF]

Biogeosciences, 2017
We studied sediments from the ca. 1400 million-year-old Xiamaling Formation from the North China block. The upper unit of this formation (unit 1) deposited mostly below storm wave base and contains alternating black and green-gray shales with very ...
S. Zhang, X. Wang, H. Wang, E. U. Hammarlund, J. Su, Y. Wang, D. E. Canfield   +6 more
doaj   +1 more source

Classification and Evaluation of Shale Oil Reservoirs of the Chang 7_1-2 Sub-Member in the Longdong Area

Energies, 2022
Establishing a suitable classification and evaluation scheme is crucial for sweet spot prediction and efficient development of shale oil in the Chang 71-2 sub-member of the Longdong area.
Heting Gao, Xinping Zhou, Zhigang Wen, Wen Guo, Weichao Tian, Shixiang Li, Yunpeng Fan, Yushu Luo   +7 more
doaj   +1 more source

Control of Earth system evolution on the formation and enrichment of marine ultra-deep petroleum in China

Petroleum Exploration and Development
Taking the Paleozoic of the Sichuan and Tarim basins in China as example, the controlling effects of the Earth system evolution and multi-spherical interactions on the formation and enrichment of marine ultra-deep petroleum in China have been elaborated.
Shuichang ZHANG, Huajian WANG, Jin SU, Xiaomei WANG, Kun HE, Yuke LIU   +5 more
doaj   +1 more source

Regional and global proxies for varying ocean redox conditions at ∼1.57 Ga: A causal connection with volcanism-induced weathering

Geosystems and Geoenvironment, 2023
We present rare earth element (REE) and Mo isotope data from the middle Gaoyuzhuang Formation in North China in order to contribute to the debate on the Mesoproterozoic marine redox state. Sequential leaching of the Gaoyuzhuang calcareous shales exhibits
Yuntao Ye, Huajian Wang, Xiaomei Wang, Jie Li, Chaodong Wu, Shuichang Zhang   +5 more
doaj   +1 more source