Reservoir property changes during CO2–brine flow-through experiments in tight sandstone: Implications for CO2 enhanced oil recovery in the Triassic Chang 7 Member tight sandstone, Ordos Basin, China
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Asian Earth Sciences"
DOI: 10.1016/j.jseaes.2019.05.002
Abstract: Abstract The effects of supercritical CO2 (ScCO2) on reservoir property changes of the Chang 7 Member tight sandstones of the Yanchang Formation, Ordos Basin, China, were investigated using CO2–brine flow-through experiments, in conjunction with detailed… read more here.
Keywords: tight sandstone; chang member; reservoir property; co2 brine ... See more keywords
Three-dimensional imaging of fracture propagation in tight sandstones of the Upper Triassic Chang 7 member, Ordos Basin, Northern China
Sign Up to like & getrecommendations! Published in 2020 at "Marine and Petroleum Geology"
DOI: 10.1016/j.marpetgeo.2020.104501
Abstract: Abstract The characteristics of fracture propagation in heterogeneous tight sandstones are critical to volumetric fracturing, which is the key to unlocking unconventional resources in tight sandstones. Quantification of the influence of pre-existing pore systems and… read more here.
Keywords: three dimensional; propagation; member ordos; tight sandstones ... See more keywords
Microscopic Characteristics and Controlling Factors of Pore Structures in Shale Reservoirs: A Case Study of the Chang 7 Member in the Longdong Area of the Ordos Basin
Sign Up to like & getrecommendations! Published in 2025 at "ACS Omega"
DOI: 10.1021/acsomega.5c08201
Abstract: The Ordos Basin is renowned for its development of continental and transitional marine-continental shale formations, particularly within the Triassic Yanchang Formation’s Chang 7 member, which functions as a primary stratum for shale oil reservoirs. These… read more here.
Keywords: area; ordos basin; shale reservoirs; chang member ... See more keywords
Paleoenvironment reconstruction and differential OM enrichment mechanism of the Upper Triassic Chang 7 member source rocks in the Ordos Basin
Sign Up to like & getrecommendations! Published in 2025 at "Scientific Reports"
DOI: 10.1038/s41598-025-01851-0
Abstract: The organic-rich mudstones within the lacustrine deposits of the Chang 7 member in the Ordos Basin are recognized as the primary source rocks of the Mesozoic petroleum system. Previously, scholars have extensively investigated the formation… read more here.
Keywords: organic matter; lake facies; source rocks; source ... See more keywords
The influence of bitumen on reservoir properties and hydrocarbon accumulation in the Chang-8 Member of Huaqing area, Ordos Basin, China
Sign Up to like & getrecommendations! Published in 2019 at "Petroleum Science and Technology"
DOI: 10.1080/10916466.2018.1511589
Abstract: Abstract The Chang-8 Member belongs to a low-porosity and low-permeability reservoir. Combined with the geochemical indices, physical properties of reservoirs before and after washing oil, the hydrocarbon accumulation sequence and reservoir compaction history was analyzed.… read more here.
Keywords: hydrocarbon accumulation; reservoir; chang member;
Research on the Characteristics of Microscopic Damage to Different Pore Types by Slippery Water Fracturing Fluid in the Chang Member Tight Sandstone Reservoir, Ordos Basin, NW China
Sign Up to like & getrecommendations! Published in 2021 at "Geofluids"
DOI: 10.1155/2021/6652877
Abstract: This paper examines the damage caused by slickwater fracturing fluid to the microscopic pore structure of tight sandstone in the Chang 7 member in the Ordos Basin. A submicron CT in situ displacement system was… read more here.
Keywords: tight sandstone; fracturing fluid; damage; pore ... See more keywords
An Evaluation of Natural Fracture Effectiveness in the Tight Oil Reservoir of Chang 7 Member, Yanchang Formation, Longdong Area, Ordos Basin, China
Sign Up to like & getrecommendations! Published in 2025 at "Interpretation"
DOI: 10.1190/int-2024-0015.1
Abstract: The Chang 7 member reservoir in the Longdong area of the Ordos Basin, China, is characterized by tight lithology, limited reservoir capacity, and significant heterogeneity, necessitating hydraulic fracturing to enhance production. The Chang 7 member… read more here.
Keywords: longdong area; reservoir; chang member;
Distribution and characteristics of rearranged hopanes in the black shale of the Chang 9 member, the Upper Triassic Yanchang Formation in the Ansai area, Ordos Basin, North China
Sign Up to like & getrecommendations! Published in 2025 at "PLOS One"
DOI: 10.1371/journal.pone.0337076
Abstract: Shale samples from source rocks of the Upper Triassic Yanchang Formation (Chang 9 member) in the Ansai area, Ordos Basin, North China, were analyzed using gas chromatography – mass spectrometry (GC-MS) to investigate the distribution,… read more here.
Keywords: ordos basin; rearranged hopanes; hopane; chang member ... See more keywords
Quantitative Characterization of Surfactant Displacement Efficiency by NMR—Take the Tight Oil of Chang 8 Member of Yanchang Formation in Fuxian Area, Ordos Basin, as an Example
Sign Up to like & getrecommendations! Published in 2024 at "Energies"
DOI: 10.3390/en17215450
Abstract: Surfactant flooding is a pivotal technique for enhancing oil recovery efficiency. The Chang 8 member of the Yanchang Formation in the Ordos Basin exemplifies a quintessential tight oil reservoir. Specifically, 47.9% of wells yield less… read more here.
Keywords: efficiency; fsd 952; oil; displacement ... See more keywords
Reservoir Characteristics and Shale Oil Enrichment of Shale Laminae in the Chang 7 Member, Ordos Basin
Sign Up to like & getrecommendations! Published in 2025 at "Energies"
DOI: 10.3390/en18205342
Abstract: The laminae of lacustrine shale in China have been systematically identified and characterized by a combination of core/slice observations, mineral compositions, geochemical analysis, pore structure characterization, and oil-bearing evaluation. The shale of the Chang 7… read more here.
Keywords: laminae; ordos basin; oil; chang member ... See more keywords
Gas Desorption Characteristics of the Chang 7 Member Shale in the Triassic Yanchang Formation, Yan’an Area, Ordos Basin
Sign Up to like & getrecommendations! Published in 2023 at "Minerals"
DOI: 10.3390/min13050622
Abstract: In the Yan’an area of the Ordos Basin, the lithological heterogeneity of Chang 7 Member shale is extremely strong. In addition, sandy laminae is highly developed within the Chang 7 Member shale system. In order… read more here.
Keywords: gas; desorption; member shale; chang member ... See more keywords