Results 41 to 50 of about 449 (130)

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

open access: yesChina 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   +5 more
doaj   +1 more source

Microscopic Pore Structure Characteristics and Genesis of Low Resistivity Reservoirs: A Case Study of the Wufeng and Longmaxi Formations in the Changning Area, Sichuan Basin

open access: yesEnergy Science &Engineering, Volume 13, Issue 12, Page 5910-5923, December 2025.
1. Organic matter graphitization forms highly conductive carbon networks, significantly reducing shale resistivity. 2. Major and trace elements further enhance conductivity through electron transfer and electrochemical reactions. ABSTRACT This study investigates the micro‐pore structure characteristics and genesis of low‐resistivity reservoirs in the ...
Xiangyang Pei   +8 more
wiley   +1 more source

Exploring the Effects of Hydraulic Fracturing on the 2019 Mw 5.0 Weiyuan Earthquake in Sichuan, China

open access: yesJournal of Geophysical Research: Solid Earth, Volume 130, Issue 9, September 2025.
Abstract The seismicity inside the Sichuan Basin in southwest China has been dramatically intensified with the increase of shale gas exploitation recently. On 8 September 2019, an MW 5.0 earthquake struck Weiyuan County in the Sichuan Basin, representing the largest earthquake in the Weiyuan shale gas field.
Shuchao Tan   +5 more
wiley   +1 more source

Analysis of Gas‐Bearing Properties of Shale Reservoirs: A Comprehensive Analysis Based on Field Interpretation and Logging Interpretation

open access: yesEnergy Science &Engineering, Volume 13, Issue 8, Page 4241-4251, August 2025.
ABSTRACT Shale gas, as an important component of unconventional natural gas, plays a crucial role in resource development. This paper proposes a comprehensive analytical method that combines field analysis and well logging interpretation to evaluate gas content in shale reservoirs.
Jin Pang   +6 more
wiley   +1 more source

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

open access: yesGeophysical 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   +5 more
wiley   +1 more source

Accurate Determination of the Age of the Carbonaceous Mudstone of the Ordovician-Silurian Boundary in Zheng'an County, Guizhou Province by Re-Os Isotope Dating Method and Its Application in Paleoenvironmental Inversion

open access: yesYankuang ceshi, 2020
BACKGROUND Organic-rich sedimentary rocks of the Wufeng-Longmaxi Formation are widely developed in the Ordovician-Silurian boundary of the Upper Yangtze platform in China, which is rich in shale gas resources. Using the Re-Os isotope system to study this
LI Xin-wei   +3 more
doaj   +1 more source

Three-Dimensional Morphology and Connectivity of Organic Pores in Shale from the Wufeng and Longmaxi Formations at the Southeast Sichuan Basin in China

open access: yesGeofluids, 2021
Organic pores play an important role in shale reservoirs. Organic pores occur where shale gas was produced and accumulated. However, there is little scientific understanding of the distribution and connectivity of organic pores.
Tao Jiang   +5 more
doaj   +1 more source

Multi‐Criterion Stability Evaluation and Surface Boundary Method for Slopes

open access: yesAdvances 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   +4 more
wiley   +1 more source

Black Shale Lithofacies of the Wufeng–Longmaxi Formation in the Southeast Margin of Chongqing, China

open access: yesGeofluids, Volume 2025, Issue 1, 2025.
China’s shale gas has undergone nearly 20 years of exploration; unconventional oil and gas geological evaluation theories and research methods have been greatly enriched, but how to quickly, conveniently, and accurately identify the sweet spots of shale gas is still puzzling many researchers. This study focuses on the black shale of the Wufeng–Longmaxi
Junqing Liu   +12 more
wiley   +1 more source

Characteristics and exploration significance of Wufeng-Longmaxi Formation stratigraphic section in Mount Huaying, Sichuan Basin

open access: yesYouqicang pingjia yu kaifa, 2022
In recent years, the exploration of Longmaxi Formation in Sichuan Basin has been successful, but the shale gas of the complex structural belt’s Longmaxi Formation are still the next areas for exploration.
XIONG Liang   +5 more
doaj  

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