Results 31 to 40 of about 290 (175)

Coupling effects of temperature, confining pressure, and pore pressure on permeability and average pore size of Longmaxi shale

Deep Underground Science and Engineering, Volume 2, Issue 4, Page 359-370, December 2023., 2023
This paper investigates the permeability characteristics and average pore size of Longmaxi shale under different temperature and pressure conditions. A customized high‐temperature and high‐pressure core permeability instrument was used to carry out seepage experiments on the Longmaxi shale.
Xiaoyan Zhang, Hongsen Li, Xue Tan, Guoliang Li, Hua Jiang   +4 more
wiley   +1 more source

Lithofacies identification of shale formation based on mineral content regression using LightGBM algorithm: A case study in the Luzhou block, South Sichuan Basin, China

Energy Science &Engineering, Volume 11, Issue 11, Page 4256-4272, November 2023., 2023
This study is based on logging data and core testing data, and uses machine‐learning algorithms to construct a regression model for the relative content of shale minerals. The regression prediction model and mineral ternary diagrams are used to classify and identify lithofacies.
Yi Liu, Runhua Zhu, Shuo Zhai, Na Li, Chengyong Li   +4 more
wiley   +1 more source

Pore structure and fractal characteristics of Wufeng–Longmaxi formation shale in northern Yunnan–Guizhou, China

Frontiers in Earth Science, 2023
In this study, the microscopic pore characteristics of shale in marine strata are evaluated. Based on field emission scanning electron microscopy (FE-SEM), low-temperature N2 adsorption (LT-N2GA), low-pressure CO2 adsorption (LP-CO2GA) and high-pressure methane adsorption (HPMA) experiments, the pore characteristics of 12 shales from the Wufeng ...
Tao Wang, Tao Wang, Tao Wang, Fenghua Tian, Ze Deng, Ze Deng, Haiyan Hu   +6 more
openaire   +2 more sources

Pore structure and fractal characteristics of transitional shales with different lithofacies from the eastern margin of the Ordos Basin

Energy Science &Engineering, Volume 11, Issue 11, Page 3979-4000, November 2023., 2023
This paper aims to study the full‐scale pore structure characteristics of different shale lithofacies of marine and terrestrial transitional shales in the eastern margin of the Ordos Basin, as well as the main controlling factors of pore development at different scales.
Tao Wang, Ze Deng, Haiyan Hu, Fenghua Tian, Rong Ding, Tao Zhang, Zhanrong Ma, Songyi Hou, Xiaogang Li, Ruirui Dai, Xing Hong   +10 more
wiley   +1 more source

Black shale of Wufeng-Longmaxi Formation in southeast Chongqing pore type of reservoir

IOP Conference Series: Earth and Environmental Science, 2019
Abstract On the basis of previous research results, a series of studies on black shales of the Upper Ordovician Wufeng Formation and Lower Silurian Longmaxi Formation in southeastern Chongqing have been carried out with thin sections and scanning electron microscopy.
Xiao Weiqi, Xing Enhao
openaire   +1 more source

Shale lithofacies and reservoir space of the Wufeng–Longmaxi Formation, Sichuan Basin, China

Petroleum Exploration and Development, 2012
Based on observation of the outcrops and cores of the Late Ordovician to the Early Silurian Wufeng-Longmaxi shale, developed in the deep water shelf environment, in the southeast of the Sichuan Basin, the mineralogical features, lithofacies characteristics and reservoir space types were studied and the factors affecting reservoir capacity were analyzed
Chao LIANG, Zaixing JIANG, Yiting YANG, Xiajie WEI   +3 more
openaire   +2 more sources

Paleoenvironment and Organic Matter Accumulation of the Upper Ordovician-Lower Silurian, in Upper Yangtze Region, South China: Constraints from Multiple Geochemical Proxies

Energies, 2020
The origin of the organic-rich shale in the Upper Ordovician Wufeng Formation and Lower Silurian Longmaxi Formation is complex and controversial. This paper reports the geochemical data of Wufeng-Longmaxi Formations in the Upper Yangtze region to restore
Zisang Huang, Xingzhi Wang, Xiyan Yang, Rukai Zhu, Jingwei Cui, Wenrui Shi, Yiqing Zhu   +6 more
doaj   +1 more source

Preservation condition evaluation of normal pressure shale gas in the Wufeng and Longmaxi Formations of basin margin transition zone, Southeast Chongqing

地质科技通报, 2023
Despite the huge gas resources in the shale of the Upper Ordovician Wufeng Formation and Lower Silurian Longmaxi Formation in the Sichuan Basin and its periphery, commercial breakthroughs are mainly located inside the basin.The Southeast Chongqing ...
Yisheng Liu, Jineng Jin, Renfang Pan, Xiaotian Li, Zhengping Zhu   +4 more
doaj   +1 more source

Discussion on the contribution of graptolite to organic enrichment and gas shale reservoir: A case study of the Wufeng–Longmaxi shales in South China

Journal of Natural Gas Geoscience, 2018
The graptolitic shale of the Wufeng–Longmaxi Formations is widely deposited across the Ordovician and Silurian transition in South China, which is the target of shale gas exploration and development within China.
Zhen Qiu, Caineng Zou, Xizhe Li, Hongyan Wang, Dazhong Dong, Bin Lu, Shangwen Zhou, Zhensheng Shi, Ziqi Feng, Mengqi Zhang   +9 more
doaj   +1 more source

Comprehensive characterization and evaluation of deep shales from Wufeng-Longmaxi Formation by LF-NMR technology

Unconventional Resources, 2022
Marine deep shale gas represents the main target of future shale gas development in China. In order to identify the key parametric characteristics of deep shales, a comprehensive test method and application study was carried out based on LF-NMR technology. The results show that the NMR T2 spectrum of shales varied considerably in different states.
Hongyan Wang, Shangwen Zhou, Shuangshuang Li, Meng Zhao, Te Zhu   +4 more
openaire   +2 more sources