Results 21 to 30 of about 3,385 (255)
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 +8 more
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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 +6 more
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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 +3 more
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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 +5 more
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Mantle contributions to global tungsten recycling and mineralization
Communications Earth & EnvironmentTungsten deposits are typically associated with crust-derived evolved granitoids. Whether the mantle has contributed to tungsten mineralization, however, is unknown.
Jie-Hua Yang +7 more
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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 +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 +6 more
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The Canadian Journal of Chemical Engineering, EarlyView.Abstract This study proposes a novel, green, and sustainable method for synthesizing magnetic iron oxides from metallurgical copper slag (CS), leveraging its iron content as a valuable resource. Iron was extracted via acid leaching using edible citric acid (ECA), forming a citrate–iron complex (CSL), which was subsequently thermally decomposed at 300°C
Melisa Portilla‐Sangabriel +4 more
wiley +1 more source
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 +7 more
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Review and prospects of shear test of bolted rock joints
Deep Underground Science and Engineering, EarlyView.The laboratory shear test equipment, test method, and numerical simulation of bolted rock joints were summarized. The shortcomings and limitations of the current research were analyzed, and the research prospects were proposed. Abstract Rock bolting is a critical approach in geotechnical engineering for supporting weak rocks.
Shulin Ren +4 more
wiley +1 more source