Results 71 to 80 of about 4,224,348 (129)

Mineralogical and Geochemical Compositions of Ammonian Illite-Enriched High-Rank Coals of the Xingying Mine, Northeastern Chongqing, China. [PDF]

ACS Omega, 2022
Zou J, Wang H, Chen H, Li H, Li T.
europepmc   +1 more source

Extensional trough-controlled sedimentation and organic-rich mudstone/shale distribution during the Late Permian in the northern Sichuan Basin

Frontiers in Earth Science
The Upper Permian succession of the northern Sichuan Basin records plume-related extension within a carbonate-platform system characterized by pronounced lateral facies differentiation.
Linqi Wang, Linqi Wang, Wen Zhou, Wen Zhou, Hao Xu, Ruiyin Liu, Ruiyin Liu, Qian Cao, Qian Cao, Chao Tang, Chao Tang, Yu Yu, Feilong Pu, Feiyu Li   +13 more
doaj   +1 more source

Controlling factors and exploration potential of shale gas enrichment and high yield in Permian Dalong Formation, northern Sichuan Basin, SW China

Petroleum Exploration and Development
Based on the basic data of drilling, logging, testing and geological experiments, the geological characteristics of the Permian Dalong Formation marine shales in the northern Sichuan Basin and the factors controlling shale gas enrichment and high yield ...
Rui YONG, Hongzhi YANG, Wei WU, Xue YANG, Yuran YANG, Haoyong HUANG   +5 more
doaj   +1 more source

Characteristics of Microorganisms and Origins of Organic Matter in Permian Shale in Northwestern Sichuan Basin, South China

Permian shale gas, a resource-rich energy source, has garnered significant attention in recent years regarding its organic matter enrichment characteristics.
Yuying Zhang, Min Li, Dongjun Feng, Yifei Li, Bo Gao, Pengwei Wang, Baojian Shen, Yang Liu   +7 more
core   +1 more source

Formation professionnelle

, 1995
Publ. comme no 7, janv./avril 1996 de la revue Formation professionnelleL'évolution des fonctions de la formation -- Enseignement ouvert -- Modularisation : aspects du débat en Allemagne et au Royaume-Uni -- Développement de compétences et organisation ...
Centre européen pour le développement de la formation professionnelle
core   +1 more source

Enrichment Mechanism of Lithium in Late Permian Coals in the Bijie Area, Guizhou, China. [PDF]

ACS Omega, 2022
Wang Q, Yan Q, Zhang Y, Zhou F.
europepmc   +1 more source

Wellbore stability analysis considering rock damage mechanics theory: An integrated experimental and numerical study

Natural Gas Industry B
Conventional geostress evaluation methods often assume static rock properties and neglect the dynamic degradation of mechanical parameters caused by damage evolution during drilling and fracturing processes, which significantly limits prediction accuracy.
Fei Liu, Ze Li, Jian Min, Yang Peng, Huan Peng, Songhai Qin, Yuntao Liu, Jian Xiong, Ruowen Yu   +8 more
doaj   +1 more source

Microcheilinella venusta Chen 1958

, 2012
Microcheilinella cf. venusta Chen, 1958 Fig. 13Q Locality - Wujiaping Formation (samples 05PAJ22, 24, 25, 28, 29), Dajiang section (25°33’56’’N- 106°39’41’’E), Guizhou Province, South China, Changhsingian, Late Permian.
Forel, Marie-Béatrice
core   +1 more source

Enrichment characteristics and genesis mechanism of critical elements (Nb-Ta-Zr-Hf-REE-Y) in coals: a case study of Late Permian coalfield in Northeastern Guizhou, China

Frontiers in Earth Science
The discovery of coal-type beneficial metal deposits and corresponding genesis mechanisms are cutting-edge issues in current sedimentary environment research. Based on industrial analysis, mineralogy, and geochemical measurement of seven typical mines in
Ziyi Ye, Baoqing Li, Jialiang Cao
doaj   +1 more source

Strain-Softening-Based Elliptical Wellbore Model for Horizontal In-Situ Stress Prediction and Wellbore Stability Analysis in the Wujiaping Formation of Kaijiang-Liangping Block, Eastern Sichuan Basin, Sichuan Province

Processes
Marine shale is highly prone to wellbore collapse due to its high pore pressure, propensity for hydration and swelling, distinct bedding planes, and low tensile strength. Horizontal in situ stress serves as a critical parameter for wellbore stability analysis; however, its accurate prediction is extremely challenging in complex geological environments.
Xinrui Yang, Qiang Wang, Ji Xu, Meng Li, Kanhua Su, Qian Li, Liangjun Xu, Qiang Pu, Guanghui Shi, Wen Tang, Chen Jing, Bo Xu, Qifeng Qin   +12 more
openaire   +1 more source