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Influencing factors of gas content evaluation for shale gas:a case study of Lower Paleozoic Wuling fold belt in upper yangtze basin

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Global Geology 2014年第1期17卷 18-23页

作者： MIAO Qishi PAN Baozhi ZHAI Ting YANG Mingyu Logging Engineering Company East China Petroleum BureauSinopec College of Geo-Exploration of Science and Technology Jilin University

Factors of shale gas accumulation can be divided into the external and internal factors,according to accumulation mechanism and characteristics of shale gas. The internal factors mainly refer to parameters of organic geochemistry,mineral components and physical parameters. Six factors were presented in this study,i. *** matter,maturity,quartz,carbonate,clay mineral and pore. The external factors mainly refer to geologic environment of shale gas reservoir,including four factors: temperature,pressure,depth and *** on the experiment results of 26 samples of drilling cores from Wuling fold belt in Lower Paleozoic Silurian of the upper yangtze basin,combined with the integrated analysis of geology,logging and test,the correlation of the gas content of shale gas to the above-mentioned ten factors was concluded. Six important evaluation indicators were preliminarily established in the gas-bearing core area of marine shale in the upper yangtze basin.

关键词： shale gas gas content influencing factor marine shale upper yangtze basin

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Systematic Design and Coordination Acts of Ecological Security in upper yangtze River in China

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Wuhan University Journal of Natural Sciences 2003年第3B期8卷 987-995页

作者： Fang Yi-ping, Chen Quo-jieInstitute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, Sichuan. China School of Management, University of Electronic Science and Technology of China, Chengdu 610054, Sichuan, China Institute of Mountain Hazards and Environment Chinese Academy of Sciences Chengdu 610041 Sichuan China School of Management University of Electronic Science and Technology of China Chengdu 610054 Sichnan China Institute of Mountain Hazards and Environment Chinese Academy of Sciences Chengdu 610041 Sichuan China

In this paper, systematic design and act of eco-security is discussed as a focal point of conflict and unrest. The situation of ecosystem, the schematic framework of eco-security design, the main acts of ecosystem improvement, major difficulties and challenges have also been analyzed. The purpose of this study was to formulate the systematic framework of eco-security maintenance, to highlight systematic idea or philosophy of ecological rehabilitation and eco-security. A three-dimensional schematic model is applied to design the security of ecosystem. It was concluded that: 1) maintaining ecological security requires far better and sophisticated resource management skill and ecological improvement measures, and is also a continuing and multifac-eted task. It cannot be permanently accomplished by a single action and program; 2) at present, technical system and policy and law system dimensions of ecological security are not enough even in short; 3) development of ecological industries is beneficial to local economic development and ecosystem protection.

关键词： upper yangtze basin ecological security systematic design eco-security maintenance

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