Results 61 to 70 of about 290 (175)

Effects of Periodic Normal Stress Oscillations on Frictional Properties of Simulated Natural Fault Gouges Under In Situ P‐T Conditions

Geophysical Research Letters, Volume 52, Issue 8, 28 April 2025.
Abstract Induced earthquakes are occasionally associated with stress oscillations resulting from periodic industrial activities. Yet, the effects of stress oscillations on fault friction under realistic subsurface conditions are not fully clear. We conducted normal stress oscillations experiments using simulated fault gouges derived from the major ...
Bowen Yu, A. R. Niemeijer, Jianye Chen, Shengli Ma, J. H. P. de Bresser, Jiahui Feng   +5 more
wiley   +1 more source

Multi‐Criterion Stability Evaluation and Surface Boundary Method for Slopes

Advances in Civil Engineering, Volume 2025, Issue 1, 2025.
Slope failure generally starts from a single point, where a local failure surface forms, and then progresses to the overall failure. Based on this behavior, this paper proposes a multi‐criterion stability evaluation approach for describing progressive failure process of slope.
Lier Lu, Hao Yang, Yingfa Lu, Shiqi Zhang, Guang-Liang Feng   +4 more
wiley   +1 more source

Significance and formation mechanism of abnormally pressured compartments of shale gas in the Ordovician Wufeng-Silurian Longmaxi formations, southeastern Sichuan Basin

Shiyou shiyan dizhi, 2022
Overpressure is commonly existed in shale gas pools of Jiaoshiba and Dingshan structures in the southeastern part of Sichuan and Huangjinba structure in Changning area of the southern region of Sichuan.
Weixin LIU, Longfei LU, Deliao YE, Chencheng HE, Wangwei LIU, Lingjie YU, Wentao ZHANG, Baojian SHEN   +7 more
doaj   +1 more source

Accumulation condition for Wufeng-Longmaxi Formation shale gas of Yanjin-Gongxian area

工程科学学报, 2016
The formation conditions of shale gas in Wufeng-Longmaxi Formation of Yanjin-Gongxian area were analyzed on the basis of field observation and experimental data,and then the main factors for shale gas accumulation were discussed. Results show that black shale at the bottom of Wufeng-Longmaxi Formation is a deep-water shelf deposit product.
LIANG Ping-ping, WANG Hong-yan, ZHAO Qun, ZHANG Qin, WANG Nan, XIAO Qian-hua   +5 more
openaire   +1 more source

Characteristics of Micropore Structure and Its Influence on Shale Oil Occurrence: A Case Study From the Second Member of Funing Formation, Subei Basin

Journal of GeoEnergy, Volume 2025, Issue 1, 2025.
To clarify the micropore structure characteristics of shales in the second member of the Funing Formation, Subei Basin and their influence on shale oil occurrence, various tests were conducted, including low‐temperature nitrogen adsorption (LTNA), scanning electron microscopy (SEM), rock pyrolysis, total organic carbon (TOC), and X‐ray diffraction (XRD)
Chenxi Wu, Pengfei Zhang, Junjie Wang, Weizheng Gao, Yangjiang Yi, Wenbiao Li, Nengwu Zhou, Guohui Chen, Shuangfang Lu, Dongjun Song   +9 more
wiley   +1 more source

Probing the Behaviour of Fluids Confined in Porous Materials by Neutron Scattering: Applications to CO2 Sequestration and Enhanced Oil and Gas Recovery

ChemPlusChem, Volume 89, Issue 12, December 2024.
Understanding the properties of confined fluids is a challenging research area and a key feature for many applications. The review summarises the utility of neutron scattering for the structural investigation of fluids confined in porous materials.
Konstantinos L. Stefanopoulos
wiley   +1 more source

Investigation of the Enrichment and Accumulation of Normal Pressure Shale Gas in Anchang Syncline Outside of Sichuan Basin

Frontiers in Earth Science, 2022
Gas shales from the Wufeng-Longmaxi Formation in Anchang syncline in northern Guizhou area of Sichuan Basin are stable in distribution and can be classified as type I shale gas reservoir with great resource potential.
Baofeng Lan, Baofeng Lan, Fuping Zhao, Fuping Zhao, Shaopeng Li, Haishen Jiang, Song Liu, Zhiyao Zhang   +7 more
doaj   +1 more source

Study on the influence of vertical stress difference coefficient on fracture characteristics of shale under high stress

Energy Science &Engineering, Volume 12, Issue 8, Page 3227-3242, August 2024.
Comprehensive analysis of the effect of vertical geostress difference on the extension pattern of hydraulic fractures in shale: theory, physical, and numerical modeling. Abstract To study the effect of vertical stress difference coefficient on fracture characteristics of shale fracturing, high stress true triaxial hydraulic fracturing test was carried ...
Xin Chang, Guozhou Qiu, Jing Li, Yintong Guo, Zhiwen Hu, Hanzhi Yang, Xinao Zhang, Yongjiang Liu   +7 more
wiley   +1 more source

Shale reservoir characteristics of Ordovician Wufeng-Silurian Longmaxi formations in Dangyang synclinorium, Middle Yangtze region

Shiyou shiyan dizhi, 2020
The petrological and organic geochemical characteristics, reservoir porosity types and features, and gas-bearing characteristics of organic-rich shale were systematically studied using FIB-SEM, mineral contentanalysis, organic geochemical analysis and ...
Jiawei FAN, Kongquan CHEN, Junjun SHEN, Wei ZHU, Xiehua TANG, Junjun LI, Pengwan WANG, Fang ZHANG   +7 more
doaj   +1 more source

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