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To uniformly evaluate the fracture development of the Triassic Yanchang Formation in Ordos Basin, a set of evaluation methods for fracture development degree is established by observation and account of fractures developed in the sandstone cores of the ...
Geyun LIU +4 more
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Ordos Basin is a multicycle superimposed cratonic basin in northern China with a simple internal structure and a gentle stratigraphic slope. It is characterized by extensive development, numerous oil and gas-bearing layers, and complete source-reservoir ...
Zhendong Gao +4 more
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The Ordos Basin is the second largest sedimentary basin in China. The Yanchang Formation is the key oilbearing layer in the Ordos Basin. The stratigraphic time interval and the stratigraphic division of the Yanchang Formation has been highly debated with
Zhang Yu +3 more
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Brittleness Logging Evaluation of Shihezi Formation in Yanchang Gas Field in Ordos Basin Based on Rock Mechanical Characteristics [PDF]
Brittleness determines the effect of reservoir fracturing and is important for increasing the production of unconventional oil and gas. The reservoir of Yanchang gas field is characterized by low porosity, low permeability and strong heterogeneity, which
Li Zhenhua +5 more
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The Chang 8 member of the Xifeng Area and the Chang 6 member of the Ansai Area are taken as examples to define the relationship between the sandstone densification and accumulation from fluid inclusion identification, simulation of sandstone porosity ...
Mingjie LIU +5 more
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The comprehensive identification by logging and organic geochemistry reveals that the Chang 91 high-quality source rock of black lacustrine mud shale mainly develops in the south of Zhidan region.
Wen-zheng ZHANG, Hua YANG, Shan-peng LI
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Formation Conditions and Sedimentary Characteristics of a Triassic Shallow Water Braided Delta in the Yanchang Formation, Southwest Ordos Basin, China. [PDF]
A large, shallow braided river delta sedimentary system developed in the Yanchang Formation during the Triassic in the southwest of the Ordos basin. In this braided delta system, abundant oil and gas resources have been observed, and the area is a hotspot for oil and gas resource exploration.
Liu Z, Shen F, Zhu X, Li F, Tan M.
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Natural fractures play an important role for the exploration and development of low-permeability reservoirs in the Triassic Yanchang Formation of the Ordos Basin.
Hui GUO +6 more
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Objective To clarify the causes of the vertical difference of pore structure in low permeability-tight sandstone reservoirs. Methods Taking the WL area of the Ordos Basin as an example, using physical property tests, casting thin sections, scanning ...
Jieyu Zhang +6 more
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Hydrocarbon origin and reservoir forming model of the Lower Yanchang Formation, Ordos Basin
According to the comparison of biomarkers in source rocks and crude oil, fluid inclusion analysis, and basin modeling, this paper discusses the oil source, hydrocarbon accumulation period and reservoir forming model of the Chang 9 and Chang 10 oil-bearing formations, Yanchang Formation, Ordos Basin.
Xiangbo LI +7 more
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