Results 91 to 100 of about 4,225,787 (199)

Middle Neoproterozoic (Tonian) Polar Wander of South China: Paleomagnetism and ID‐TIMS U‐Pb Geochronology of the Laoshanya Formation

Journal of Geophysical Research: Solid Earth, Volume 129, Issue 4, April 2024.
Abstract Paleomagnetic records of middle Neoproterozoic (820 to 780 Ma) rocks display high amplitude directional variations that lead to large discrepancies in paleogeographic reconstructions. Hypotheses to explain these data include rapid true polar wander (TPW), a geomagnetic field geometry that deviates from a predominantly axial dipole field, a ...
Justin A. D. Tonti‐Filippini, Boris Robert, Élodie Muller, André N. Paul, Fabian Dellefant, Michael Wack, Jun Meng, Xixi Zhao, Urs Schaltegger, Stuart A. Gilder   +9 more
wiley   +1 more source

Orbital and Millennial‐Scale Cycles Through the Hirnantian (Late Ordovician) in Southern China

Geochemistry, Geophysics, Geosystems, Volume 25, Issue 1, January 2024.
Abstract The Hirnantian period, making the end of the Ordovician with significant mass extinctions and large ice‐sheets, is a critical interval for studying paleoclimate variations. This research represents the first cyclostratigraphic study of this period, utilizing high‐resolution (1 mm sampling rate) geochemical data from the ∼7‐m thick SH‐1 drill ...
Siding Jin, Haiyang Cao, Mingcai Hou, Jiawei Wang, Chao Ma, Yu Liu   +5 more
wiley   +1 more source

Characteristics of the shale gas reservoirs and evaluation of sweet spots in Wufeng Formation and Longmaxi Formation in Jingmen exploration area

, 2021
In order to further clarify the resource potential of shale gas from Wufeng Formation to Longmaxi Formation in Jingmen exploration area, sweet spots were selected. The shale in Wufeng Formation and 1th Member of Longmaxi Formation of the well X was taken
Wen, LIN, Xiaoming, LI, Lihong, MA, Jirong, LIU, Dexun, LIU, Yujie, CHEN   +5 more
core   +1 more source

Mechanisms of shale gas generation and accumulation in the Ordovician Wufeng-Longmaxi Formation, Sichuan Basin, SW China

Petroleum Exploration and Development, 2017
The source rock quality, organic pore structure, occurrence state and sealing mechanisms of shale gas in the Ordovician Wufeng – SilurianLongmaxi Formation (O3w-S1l), Fuling region, Sichuan Basin were studied using a series of techniques including ultra-microscopic organic maceral identification, FIB-SEM, high temperature/pressure isothermal adsorption
Tenger BORJIGIN, Baojian SHEN, Lingjie YU, Yunfeng YANG, Wentao ZHANG, Cheng TAO, Binbin XI, Qingzhen ZHANG, Fang BAO, Jianzhong QIN   +9 more
openaire   +2 more sources

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

A Case Study on Preservation Conditions and Influencing Factors of Shale Gas in the Lower Paleozoic Niutitang Formation, Western Hubei and Hunan, Middle Yangtze Region, China

Geofluids, Volume 2024, Issue 1, 2024.
The Niutitang Formation of the lower Cambrian (Є1n) is a target reservoir of shale gas widely developed in China’s Middle‐Upper Yangtze region, with the characteristics of being widely distributed, having a big thickness and highly organic carbon abundance. However, the exploration and research degree are relatively low. Based on extensive core sample,
Shengling Jiang, Qinghua Zhou, Yanju Li, Rili Yang, Shengnan Nancy Chen   +4 more
wiley   +1 more source

Assessing shale gas resources of Wufeng-Longmaxi shale (O3w-S1l) in Jiaoshiba area, SE Sichuan (China) using Petromod II: Gas generation and adsorption

, 2016
Taking Well JY4 as example, the authors present petroleum system modeling with PetroMod software for shale gas resource assessment of Wufeng-Longmaxi shale in Jiaoshiba area, which takes account of hydrocarbon adsorption process within source rocks.
Yao, Xiulian, Wang, Yunpeng
core   +1 more source

Microscopic characteristics and geological significance of pyrite in shales of the Wufeng-Longmaxi formations, southeastern Chongqing, China

Energy Geoscience
Shales of the Wufeng-Longmaxi formations in the basin-margin transition zone of southeastern Chongqing, China are characterized by high organic matter content and a significant presence of pyrite development. By examining numerous scanning electron microscope (SEM) images and considering the crystal and aggregate characteristics of minerals, we ...
Xiao Cai, Wei Xia, Yuxia Liu, Shunzhou Liao, Lei Zhang, Weixue Hu, Li Liu, Wei Li, Fanwu Zeng   +8 more
openaire   +2 more sources

Interactive Forward and Inversion Scheme‐Based Anisotropic Correction for Shale Gas Horizontal Well Sonic Logs and Its Application

International Journal of Energy Research, Volume 2024, Issue 1, 2024.
Well logging interpretation and evaluation of reservoirs in horizontal wells plays an important role in shale gas exploration and development. The accuracy of the interpreted petrophysical parameters is directly affected by well logging curves. This study focuses on a horizontal well targeting deep shale gas layers in the Luzhou block, Southern Sichuan
Xiaoxue Qiu, Xuewen Shi, Maojie Liao, Dongjun Zhang, Guanghai Zhong, Xiang Gao, Yang Yang, Deweiran Kong, Hu Li   +8 more
wiley   +1 more source

Pressure Evolution Mechanism of Marine Shale Reservoirs and Shale Gas Accumulation Model: Evidence from Fluid Inclusions in the Wufeng–Longmaxi Formation in the Basin Margin Structural Transition Zone in Northern Guizhou Province, China

, 2023
The Wufeng–Longmaxi Formation in northern Guizhou Province is the dominant shale gas exploration and development strata in China. This study investigates the Shixi and Daozhen synclines, which are located in the basin margin transition zone.
Yisong Wang, Wei Du, Yi Chen, Xingyu Li, Xia Feng, Zhenxue Jiang, Qun Luo, Fulun Shi   +7 more
core   +1 more source