Results 21 to 30 of about 1,900 (194)

Pore-micro fracture structure, porosity and gas- bearing property of deep shale under lithofacies-formation pressure coupling [PDF]

Scientific Reports
Formation pressure-lithofacies type are the most critical factors influencing micro pore structure and porosity in shale reservoir. However, how these two factors jointly affect shale gas accumulation remains unclear.
Yunjun Zhang, Hao Zhang, Li Zhang, Jianlin Li, Yaohui Yan   +4 more
doaj   +2 more sources

Microbialite Diversity and Ocean Redox Geochemistry of the Late Tonian Callison Lake Formation [PDF]

Geobiology, Volume 24, Issue 3, May/June 2026.
ABSTRACT Microbialites provide a unique insight into ancient microbial processes and environments, but trends in the diversity of unlaminated microbialites remain poorly understood. The ca. 745 Ma Callison Lake Formation in the Yukon (northwest Canada) features a range of microbialites which are diverse at both the mesoscale and microscale.
Charlotte Spruzen, Malcolm W. Wallace, Maxwell A. Lechte, Ashleigh V. S. Hood, Brennan O'Connell, Galen P. Halverson   +5 more
wiley   +2 more sources

Experimental Study on the Impact of CO2 Treatment on Different Lithofacies in Shale Oil Reservoirs [PDF]

Applied Sciences, 2022
CO2 technology has been progressively used in the development of shale oil. After injection, CO2 can react with formation water to form carbonic acid, which then reacts with carbonate and silicate minerals, resulting in changes in porosity and permeability. However, there are some debates as to whether the effect of CO2 improves or damages porosity and
Jiaping Tao, Siwei Meng, Dongxu Li, Gang Cao, Yang Gao, He Liu   +5 more
openaire   +3 more sources

TOC interpretation of lithofacies-based categorical regression model: A case study of the Yanchang formation shale in the Ordos basin, NW China [PDF]

Frontiers in Earth Science, 2023
In this paper, taking the shale of Chang 7-Chang 9 oil formation in Yanchang Formation in the southeastern Ordos Basin as an example, through the study of shale heterogeneity characteristics, starting from the preprocessing of supervision data set, a ...
Jintao Yin, Jintao Yin, Chao Gao, Chao Gao, Ming Cheng, Quansheng Liang, Quansheng Liang, Pei Xue, Pei Xue, Shiyan Hao, Shiyan Hao, Qianping Zhao, Qianping Zhao   +12 more
doaj   +2 more sources

Seismic prediction of shale oil lithofacies associations based on sedimentary facies patterns: A case study of the shahejie formation in the Huanghekou Sag. [PDF]

PLoS ONE
The lithofacies play a pivotal role in studying development patterns, reservoir characteristics, and sweet spot predictions of shale oil. Lithofacies classification typically relies on core observations and conventional well logging analyses, whereas ...
He Zhao, Hongliang Wang, Guangyuan Wang, Lin Wan   +3 more
doaj   +2 more sources

Lithofacies Characteristics and Their Effects on Shale Oil Enrichment: A Case Study from Shahejie Formation of the Qibei Sag, Bohai Bay Basin, China

Energies, 2023
The lithology and lithofacies assemblage of shale are highly complex and heterogeneous in the continental shale formations due to rapid changes in the sedimentary environment and source material, complicating the evaluation of shale oil enrichment areas,
Congsheng Bian, Bincheng Guo, Xiugang Pu, Xu Zeng, Wei Liu, Yongxin Li, Kejia Zhou, Qianhui Tian, Chao Ma   +8 more
doaj   +2 more sources

3D discrete network modeling of shale bedding fractures based on lithofacies characterization

Petroleum Exploration and Development, 2017
Taking the Upper Ordovician Wufeng-Lower Silurian Longmaxi shale gas field in the Jiaoshiba area in Sichuan Basin as an example, 3D discrete network modeling of shale bedding fractures based on lithofaices characterization was studied. The development of
Chenghua OU, Chaochun LI
doaj   +2 more sources

Accurate lithofacies identification in deep shale gas reservoirs via an optimized neural network recognition model, Qiongzhusi Formation, southern Sichuan [PDF]

Scientific Reports
The Lower Cambrian Qiongzhusi Formation is crucial for exploring deep shale gas in Sichuan, however, challenges in accurately classifying shale lithofacies have hindered its commercialization.
Liang Xiong, Xiaoxia Dong, Tong Wang, Shaoke Feng, Limin Wei, Hua Zhou, Sicong Luo   +6 more
doaj   +2 more sources

Quantitative Classification of Shale Lithofacies and Gas Enrichment in Deep-Marine Shale of the Late Ordovician Wufeng Formation and Early Silurian Longyi₁ Submember, Sichuan Basin, China

Energies
The classification of shale lithofacies, pore structure characteristics, and controlling factors of gas enrichment in deep-marine shale are critical for deep shale gas exploration and development.
Liyu Fang, Fanghao Xu, Guosheng Xu, Jiaxin Liu, Haoran Liang, Xin Gong   +5 more
doaj   +2 more sources

Lithofacies Characteristics and Sweet Spot Distribution of Lacustrine Shale Oil: A Case Study from the Dongying Depression, Bohai Bay Basin, China [PDF]

, 2022
Lacustrine shale is characterized by rapid lithofacies transformation and compositional heterogeneity, which present challenges in shale oil sweet spot evaluation and distribution prediction and should be systematically studied.
Xinyu Du, Pengjie Ma, Minhua Ren, Chunmei Dong, Kaihao Lang, Guiang Li, Yue Yuan, Chengyan Lin, Weibin Liu, Long Jiang, Ziru Zhao   +10 more
core   +1 more source