Results 21 to 30 of about 286 (179)

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

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

Experimental Investigation of Stress Sensitivity of Elastic Wave Velocities for Anisotropic Shale in Wufeng–Longmaxi Formation

Processes, 2023
The shale of the Wufeng–Longmaxi formation in the Sichuan Basin is the preferred layer for shale gas exploration in China, and its petrophysical characteristics are the key to geological and engineering sweet spot prediction. However, the characteristics and impact mechanisms of its acoustic wave velocity and elastic anisotropy are currently unclear ...
Yutian Feng, Hongming Tang, Haoxuan Tang, Yijiang Leng, Xuewen Shi, Jia Liu   +5 more
openaire   +1 more source

Classification and Evaluation on Shale Gas Reservoir for Wufeng-Longmaxi Formation in Chuannan Area, Sichuan Basin [PDF]

Lithosphere, 2021
Abstract Based on the comprehensive statistic and analysis on some representative geological and physical data, the classification criteria on net pay for shale gas reservoir of the Wufeng-Longmaxi formation in Shunan area, Sichuan Basin, are proposed, which include porosity (φ), gas saturation (Sg), density of rock (DEN), brittleness ...
Jianlin Guo, Chengye Jia, Dongbo He, Fankun Meng   +3 more
openaire   +2 more sources

Major controlling factors for the high-quality shale of Wufeng–Longmaxi Formation, Sichuan Basin [PDF]

Energy Exploration & Exploitation, 2017
Research on major controlling factors of the high-quality shale in Upper Ordovician Wufeng–Lower Silurian Longmaxi Formation is a major subject. Based on the information of outcrops and drilling data acquired from Southern Sichuan combined with geochemical elemental analysis and biostratigraphy, this paper analyzed the sedimentary characteristics of ...
Yuman Wang, Xinjing Li, Dazhong Dong, Chenchen Zhang, Shufang Wang   +4 more
openaire   +2 more sources

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

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