Results 71 to 80 of about 466 (162)

Effects of volcanic activities in Ordovician Wufeng–Silurian Longmaxi period on organic-rich shale in the Upper Yangtze area, South China

Petroleum Exploration and Development, 2018
Based on the corresponding relationship between the paleoproductivity, redox conditions and volcanism within a chronostratigraphic framework, the effects of volcanic events in the Wufeng–Longmaxi period on organic abundance of shale were examined ...
Lanyu WU, Yongchao LU, Shu JIANG, Xiaofeng LIU, Guisong HE   +4 more
doaj   +1 more source

Factors controlling microfractures in black shale: A case study of Ordovician Wufeng Formation–Silurian Longmaxi Formation in Shuanghe Profile, Changning area, Sichuan Basin, SW China

Petroleum Exploration and Development, 2018
The dominant factors controlling development of microfractures in the black shale and the origin of microfractures in the sweet spot intervals were discussed of the Ordovician Wufeng Formation−Silurian Longmaxi Formation in Shuanghe outcrop profile ...
Dazhong DONG, Zhensheng SHI, Shasha SUN, Changmin GUO, Chenchen ZHANG, Wen GUO, Quanzhong GUAN, Mengqi ZHANG, Shan JIANG, Leifu ZHANG, Chao MA, Jin WU, Ning LI, Yan CHANG   +13 more
doaj   +1 more source

Characteristics and significance of hydrocarbon-forming organisms of Wufeng-Longmaxi formation in Pengshui and its adjacent areas

Youqicang pingjia yu kaifa, 2019
By the observation of the organic microscopic composition and scanning electron microscopy of the whole rock, the black shale of the Upper Ordovician Wufeng-Lower Silurian Longmaxi formation in Pengshui and its adjacent core wells Microscopic observation,
YANG Zhenheng, ZHAI Changbo, DENG Mo, BAO Yunjie, ZHANG Peixian, ZHANG Qingzhen, XIE Xiaomin   +6 more
doaj  

Microscopic characteristics and geological significance of pyrite in shales of the Wufeng-Longmaxi formations, southeastern Chongqing, China

Energy Geoscience
Shales of the Wufeng-Longmaxi formations in the basin-margin transition zone of southeastern Chongqing, China are characterized by high organic matter content and a significant presence of pyrite development. By examining numerous scanning electron microscope (SEM) images and considering the crystal and aggregate characteristics of minerals, we ...
Xiao Cai, Wei Xia, Yuxia Liu, Shunzhou Liao, Lei Zhang, Weixue Hu, Li Liu, Wei Li, Fanwu Zeng   +8 more
openaire   +2 more sources

Using nanoindentation to quantify the mechanical profile of the Wufeng–Longmaxi Formation in southwestern China: link to sedimentary conditions

Solid Earth
Abstract. The fine construction of a continuous mechanical profile for the Wufeng–Longmaxi (WF-LMX) Formation is crucial for designing hydraulic fracturing projects in shale gas development, which however is generally difficult to achieve by conventional macroscopic mechanical testing methods due to the difficulty in obtaining continuous block shale ...
Wang, Jianfeng, Yang, Chao, Liu, Yuke, Jiang, Wenmin, Li, Yun, Zhang, Ting, Zheng, Yijun, Liao, Yuhong, Huo, Qiuli, Fu, Li, Wang, Yusheng, Peng, Ping'an, Xiong, Yongqiang   +12 more
openaire   +2 more sources

Micropore structure and fractal characteristics of shale in Midwest China

Journal of Petroleum Exploration and Production Technology
To further clarify the optimal target layer in the horizontal section of Wufeng–Longmaxi shale, we selected 126 shale samples from the Wufeng–Longmaxi Formations (Long11 1 to Long11 4 and Long12 submember) as the primary study objects from the ...
Rui Shen, Xiaoyi Zhang, Hang Yang, Huichen Ren, Hekun Guo, Hongtao Zhou   +5 more
doaj   +1 more source

Origin and carbon isotope reversal of shale gas in Wufeng-Longmaxi formations, Sichuan Basin: implication from pyrolysis experiments

Shiyou shiyan dizhi, 2020
The Wufeng-Longmaxi shale in the Sichuan Basin is the only stratum in China to realize commercial development of shale gas. There are some differences in shale gas generation and a lack of direct experimental evidence of the reasons for these differences.
Zhongliang MA, Baojian SHEN, Anyang PAN, Tenger BORJIGIN, Chuanxiang NING, Lunju ZHENG   +5 more
openaire   +1 more source

Geological characteristics and gas bearing control factors of shale gas in the Wufeng-Longmaxi Formation of the Shaozhai syncline in northeastern Yunnan

Meitan kexue jishu
A set of organic rich shale with good exploration potential is developed in the Wufeng Formation Longmaxi Formation of the Shaozhai Syncline in northeastern Yunnan; However, its geological characteristics, gas bearing characteristics, and main ...
Yu LI, Xiaohui XUE, Jinbiao ZHANG, Jinlong LI, Lin HU, Ling WANG, Zhijun CHEN   +6 more
doaj   +1 more source

Multi-scale Fractures and Their Influence on Shale Gas Deliverability in the Longmaxi Formation of the Changning Block, Southern Sichuan Basin, China. [PDF]

ACS Omega, 2023
Zhao S, Zheng M, Liu S, Li B, Liu Y, He Y, Wang G, Qiu X.   +7 more
europepmc   +1 more source

Geochemical Changes in the Late Ordovician to Early Silurian Interval in the Northern Margin of the Upper Yangtze Platform, Southern China: Implications for Hydrothermal Influences and Paleocean Redox Circumstances. [PDF]

ACS Omega, 2023
Fu X, Liu X, Xiong S, Li X, Wu Q, Xiao B.   +5 more
europepmc   +1 more source