Results 31 to 40 of about 4,224,476 (188)

Pore Structure Characteristics and Controlling Factors of the Lower Cambrian Niutitang Formation Shale in Northern Guizhou: A Case Study of Well QX1

Fractal and Fractional
Shale pore architecture governs gas storage capacity, permeability, and production potential in reservoirs. Therefore, this study systematically investigates the pore structure features and influencing factors of the Niutitang Formation shale from the ...
Yuanyan Yin, Niuniu Zou, Daquan Zhang, Yi Chen, Zhilong Ye, Xia Feng, Wei Du   +6 more
doaj   +2 more sources

Existence and geological significance of pyrite in the organic-rich shale of Lower Cambrian Niutitang Formation in Upper Yangtze region

Shiyou shiyan dizhi, 2021
The existence of pyrite provides a basis for the restoration of sedimentary and diagenetic environment, also, it can be regarded as a reference for the prediction of organic-rich shale.
Zhengwei LU, Xuan TANG, Tongwei ZHANG, Yufang WANG, Jiazheng ZHANG, Qingqiang MENG, Zijie MA, Yi HE, Deyong SHAO   +8 more
doaj   +2 more sources

The geobiology of the extremely enriched polymetallic sulfides in the black shale of the lower Cambrian Niutitang formation, Southwestern China

, 2015
The Precambrian-Cambrian transition is a period with enormous geological and biological changes. There is a wide distribution of black shale sequence in the Late Sinian and Early Cambrian strata along the passive southern margin of the Yangtze Platform in South China.
徐俊, Xu, Jun
openaire   +3 more sources

Geochemical Characteristics and Genesis of Cambrian Shale Gas in the Southern Margin of Hannan Ancient Uplift

Frontiers in Earth Science, 2022
The geological characteristics of shale and the gas composition and carbon isotopic variation from the shale are very important indicators for the shale gas study.
Tianxu Guo, Tianxu Guo, Xianglin Chen, Xianglin Chen, Mingna Ge, Mingna Ge, Chao Wang, Chao Wang, Shujing Bao, Shujing Bao, Dishi Shi, Dishi Shi   +11 more
doaj   +1 more source

Unreliable determination of in situ stress orientation by cross multipole array acoustic logging in fractured shale reservoirs

Energy Science &Engineering, Volume 11, Issue 9, Page 3149-3163, September 2023., 2023
Sketch map showing the relationship among in situ stresses, shear waves, and natural fractures. (A) When natural fractures of the NE‒SW strike are weakly developed, the FSWs propagate along the direction parallel to SHmax, and the SSWs propagate along the direction perpendicular to SHmax.
Haimeng Yang, Jifeng Yu, Jingshou Liu, Caifu Hu, Binxin Zhang, Peng Chen   +5 more
wiley   +1 more source

The record of sea water chemistry evolution during the Ediacaran–Cambrian from early marine cements

The Depositional Record, Volume 9, Issue 3, Page 508-525, May 2023., 2023
We document changing carbonate mineralogy, Mg/Ca and rare earth element concentrations including the relative abundance of cerium (Ce anomaly: Ceanom) to track sea water oxygen levels, in well‐preserved early marine cements from shallow marine reefs from Cambrian Stages 2–4 (ca 525–512 Million years ago [Ma]).
Yi Xiong, Rachel Wood, Laetitia Pichevin
wiley   +1 more source

Analysis on Black Shale Sedimentary Paleoenvironment and Tectonic Setting of the First Member of Luzhai Formation of Lower Carboniferous, Rongshui Area of Guangxi, China

Geofluids, Volume 2023, Issue 1, 2023., 2023
In order to promote the discovery of new shale gas exploration areas in Guangxi, based on the latest drilling data, through detailed observation and description of logging data and cores, this paper selects high‐quality shale samples of the target layer for X‐ray diffraction analysis and testing of clay minerals and whole rock, major and trace elements
Juan Li, Yinglun Qin, Huanpeng Chi, Yukun Tian, Yufang Wang, Liyun Kong, Peng Tan   +6 more
wiley   +1 more source

Quantitative Characterization and Determination of the Main Factors That Control Fracture Development in the Lower Paleozoic Shale in Southeastern Chongqing, China

Geofluids, 2021
The Longmaxi and Niutitang Formations are typical shale reservoirs in southeastern Chongqing. Since the Paleozoic, southeastern Chongqing has experienced multistage tectonic movement and diagenesis, resulting in the formation of a large number of natural
Zhiping Zhang, Xiangye Kong, Qing Chen, Ye Zhang, Zhi Deng, Chuan Yu, Zhian Lei, Haijie Zhang, Xiaofeng Wang, Guanghua Yao, Licheng Yang, Xianfeng Tan   +11 more
doaj   +1 more source

Fracture Propagation Modes of Lower Cambrian Shale Filled with Different Quartz Contents under Seepage‐Stress Coupling

Geofluids, Volume 2022, Issue 1, 2022., 2022
The content and spatial distribution of brittle minerals, such as quartz, are important factors in determining the fracture initiation mechanism induced by hydraulic fracturing in shale reservoirs. To further research the impact of quartz content in shales of the Lower Cambrian Niutitang Formation in northern Guizhou on the fracture expansion of its ...
Zhonghu Wu, Shuang Wang, Jun Chen, Huailei Song, Wentao Wang, Ruyue Wang, Hao Liu, Zetian Zhang   +7 more
wiley   +1 more source

Study on the Failure Mechanism of Lower Cambrian Shale under Different Bedding Dips with Thermosolid Coupling

Geofluids, Volume 2022, Issue 1, 2022., 2022
To investigate the damage pattern and acoustic emission pattern of temperature on laminated shales, numerical experiments were carried out using the RFPA2D‐Thermal numerical software under the effect of thermosolid coupling. During the tests, temperatures of 30°C, 60°C, and 90°C were controlled, and five sets of shales containing different laminar dips
Wentao Wang, Zhonghu Wu, Huailei Song, Hengtao Cui, Yili Lou, Motian Tang, Hao Liu, Yong-Zheng Wu   +7 more
wiley   +1 more source