Results 21 to 30 of about 210 (135)

Geochemical Characteristics and Organic Matter Accumulation of Wufeng-Longmaxi Shales in the Southeast of the Sichuan Basin of South China

Geofluids, 2022
The Upper Ordovician Wufeng Formation and Lower Silurian Longmaxi Formation black shales are the critical targets for shale gas exploration in the Sichuan Basin of South China.
Ying Zhang, Chengfu Lyu, Xue Gao, Zhaoqing Dang, Zhaotong Sun, Qianshan Zhou, Guojun Chen   +6 more
doaj   +1 more source

Stratigraphic framework of the Wufeng-Longmaxi shale in and around the Sichuan Basin, China: Implications for targeting shale gas

Energy Geoscience, 2020
Stratigraphic division and correlation are crucial for the identification of sweet spots and drilling design of shale gas. In this study, a stratigraphic division and correlation was carried out for the Wufeng-Longmaxi Formations in southern China from ...
Hongyan Wang, Zhensheng Shi, Qun Zhao, Dexun Liu, Shasha Sun, Wei Guo, Feng Liang, Changmu Lin, Xuefan Wang   +8 more
doaj   +1 more source

Micro-pore structure and fractal characteristics of deep shale from Wufeng Formation to Longmaxi Formation in Jingmen exploration area, Hubei Province, China

Journal of Natural Gas Geoscience, 2022
To explore the pore structure and fractal characteristics of shale reservoirs in the Jingmen exploration area and quantitatively evaluate the heterogeneity and complexity of pores, taking Wufeng-Longmaxi formations of Well YT3 as the research object, the
Xiaoming Li, Yarong Wang, Wen Lin, Lihong Ma, Dexun Liu, Jirong Liu, Yu Zhang   +6 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

Characteristics of the deep and ultra-deep shale reservoirs of the Wufeng-Longmaxi formations in the southeastern Sichuan Basin and the significance of shale gas exploration

Shiyou shiyan dizhi, 2023
Fruitful achievements have been made in shale gas exploration in the middle and deep areas from the Upper Ordovician Wufeng Formation to the Lower Silurian Longmaxi Formation in the southeastern Sichuan Basin, and in the research on shale reservoir ...
Fubin WEI, Zhujiang LIU, Feiran CHEN, Tao YUAN, Fei LI   +4 more
doaj   +1 more source

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 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

The 2021 Ms 6.0 Luxian (China) Earthquake: Blind Reverse‐Fault Rupture in Deep Sedimentary Formations Likely Induced by Pressure Perturbation From Hydraulic Fracturing

Geophysical Research Letters, Volume 50, Issue 7, 16 April 2023., 2023
Abstract To resolve the occurrence mechanism of the Luxian earthquake occurred near an active hydraulic fracturing well pad on 15 September 2021, we first use seismic waveforms to invert the focal mechanism solution and centroid depth, and then utilize Sentinel‐1 Synthetic Aperture Radar images and Global Navigation Satellite System observations to ...
Yingwen Zhao, Guoyan Jiang, Xinglin Lei, Caijun Xu, Bin Zhao, Xuejun Qiao   +5 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