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Application of TSD tunnel seismic prediction system in karst area

Global Geology 2008年第4期11卷 246-250页

作者： Lizhi DU Xiaopei ZHANG Jianjun NIU Xuege WANG College of Construction Engineering Jilin University Changchun 130026 China China Northeast Municipal Engineering Design and Research Institute Changchun 130021 China

TSD is one of the classical methods of tunnel seismic prediction based on higher accuracy multi-wave multi-component *** working principle of the TSD and an application example of the TSD on tunnel prediction in Chongqing are introduced in this *** system has two ports for speed signal and acceleration signal,and the equipment is more portable and easy to *** to the application results we can conclude that the TSD prediction system is accurate and it has the wide application prospect in tunnel seismic detection.

关键词： TSD tunnel seismic prediction karst area

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Predicting the distribution of thin bed reservoirs by broad frequency band seismic

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Applied Geophysics 2007年第2期4卷 118-126页

作者： Li Zishun Guo Xuebin Exploration and Development Research Institute of Daqing Oilfield Company Ltd. Daqing 163000 China China University of Geosciences （Beijing） Beijing 10083 China

Recognition of thin interbedded reservoirs in the middle-shallow strata in the Songliao Basin is a great difficulty. In order to resolve this problem, we present a technique for predicting the distribution of thin reservoirs using a broad frequency band and ultra high resolution seismic. Based on forward modeling, we recognized that a thin bed seismic reflection is characterized by changing amplitude with changing frequency （amplitude versus frequency, AVF）. We calculate the thickness of thin reservoirs from their AVF characteristics and predict the distribution of thin bed reservoir using broad frequency band and ultra high resolution seismic. The technique has been applied in the 3D seismic area of Zhaoyuan in the northern part of the Songliao Basin. The seismic resolution is increased by two or three times over that of conventional seismic and many thin reservoirs have been identified. The technique has extensive application to the exploration and development of oil and gas, such as optimizing the location of exploration wells, the design of wells （especially horizontal wells）, choice of production test layers, analyzing reservoir continuity in development wells, and so on.

关键词： thin reservoir seismic prediction AVF characteristics Songliao Basin.

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