Results 81 to 90 of about 1,646 (200)

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

Lithofacies palaeogeography, depositional model and shale gas potential evaluation in the O3-S1 Wufeng-Longmaxi Formation in the Sichuan Basin, China

China Geology
: The black shales of Wufeng and Longmaxi Formation (Late Ordovician-Early Silurian period) in Sichuan Basin are the main strata for marine shale gas exploration, which have a yearly shale gas production of 228×108 m3 and cumulative shale gas production ...
Xiang-ying Ge, Chuan-long Mou, Xin Men, Qian Hou, Bin-song Zheng, Wei Liang   +5 more
doaj   +1 more source

Characterization of mechanical properties of shale constituent minerals using phase‐identified nanoindentation

Computer-Aided Civil and Infrastructure Engineering, Volume 40, Issue 4, Page 542-558, 4 February 2025.
Abstract Characterization of mechanical properties of shale constituent minerals (viz., the mechanical genes of shale) has been challenging but of great significance for engineering applications in shale formations. In this study, a phase‐identified nanoindentation is proposed to decode the mechanical genes of shale using a large nanomechanical dataset.
Jianting Du, Ka‐Veng Yuen, Andrew J. Whittle, Liming Hu, Thibaut Divoux, Jay N. Meegoda   +5 more
wiley   +1 more source

Control Model of Organic Shale Enrichment by Terrigenous Weathering in Wufeng Formation–Longmaxi Formation, Southeast Sichuan, China

, 2023
The relationship between the Late Ordovician–Early Silurian sedimentary system, weathering, paleoclimate, and primary productivity in the Yangzi region is not well understood.
Zhibo Zhang, Difei Zhao, Jiaming Zhang, Yinghai Guo, Chunlin Zeng, Yan Li   +5 more
core   +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

Study on the Mechanical Properties and Fracturing Damage Process of Shale With Preexisting Fractures Under Fluid–Solid Coupling Effects

International Journal of Energy Research, Volume 2025, Issue 1, 2025.
To investigate the influence of fractures on the hydraulic fracturing extraction of shale gas, this study conducted a fluid–solid coupling analysis of shale with preexisting fractures. Initially, the mineral composition and the distribution of microfractures and pores in the shale were analyzed using X‐ray diffraction (XRD) and argon ion scanning ...
Motian Tang, Xianfeng Zhang, Peng Cheng, Zhonghu Wu, Yili Lou, Dingding Zhang   +5 more
wiley   +1 more source

NMR‐Based Quantitative Characterization of Water Imbibition in Deep Shale Rocks Under Different Pressures and Temperatures

Geofluids, Volume 2025, Issue 1, 2025.
Unconventional tight/shale gas reservoirs have gained significant attention in the energy sector. The importance of temperature and pressure in shale imbibition lies in their profound influence on the kinetics, rate, and ultimate amount of water uptake, which directly impacts the efficiency of gas production.
Kaishuo Yang, Cheng Chang, Weiyang Xie, Yizhao Chen, Xingchen Wang, Fanxiang Xu, Xinhao Gong, Dunqing Liu, Tianshou Ma   +8 more
wiley   +1 more source

Data for: Geochemical characteristics of the Lower Silurian Longmaxi Formation on the Yangtze Platform, South China: Implications for depositional environment and accumulation of organic matters

, 2019
The TOC and major and trace element concentrations of the Longmaxi ...
liu, Y (via Mendeley Data)
core   +2 more sources

Application of Raman Spectroscopy in Oil and Gas Geological Research

Journal of GeoEnergy, Volume 2025, Issue 1, 2025.
Raman spectroscopy has shown considerable potential in the study of organic macerals in source rocks due to its significant benefits of accuracy, efficiency, and in situ nondestructive detection. This technology successfully applies to the reconstruction of paleotemperature and pressure environments, the quantitative evaluation of organic matter ...
Yu Lin, Hongjian Zhu, Hongye Feng, Yiwen Ju, Yanjun Lu, Yanyan Pan, Ci Song, Sun Mengdi   +7 more
wiley   +1 more source

Study on Shale Organic Porosity in the Longmaxi Formation, AnYe-1 Well Using Field Emission-Scanning Electron Microscopy and PerGeos System

Yankuang ceshi, 2018
BACKGROUND AnYe-1 well is a geological survey parameter well implemented by China Geological Survey. It has achieved shale gas breakthrough in the Wuling complex structural area outside the southern basin of China.
BAI Ming-gang, XIA Xiang-hua, ZHANG Cong, MENG Fan-yang, YANG Yu-ru, ZHANG Chun-he, DAI Feng, XIONG Jie, WANG Xiang-hua, YU Wei-xin   +9 more
doaj   +1 more source