According to the Chapman multi-scale rock physical model, the seismic response characteristics vary for different fluid-saturated reservoirs. For class I AVO reservoirs and gas-saturation, the seismic response is a hi...According to the Chapman multi-scale rock physical model, the seismic response characteristics vary for different fluid-saturated reservoirs. For class I AVO reservoirs and gas-saturation, the seismic response is a high-frequency bright spot as the amplitude energy shifts. However, it is a low-frequency shadow for the Class III AVO reservoirs saturated with hydrocarbons. In this paper, we verified the high-frequency bright spot results of Chapman for the Class I AVO response using the frequency-dependent analysis of a physical model dataset. The physical model is designed as inter-bedded thin sand and shale based on real field geology parameters. We observed two datasets using fixed offset and 2D geometry with different fluid- saturated conditions. Spectral and time-frequency analyses methods are applied to the seismic datasets to describe the response characteristics for gas-, water-, and oil-saturation. The results of physical model dataset processing and analysis indicate that reflection wave tuning and fluid-related dispersion are the main seismic response characteristic mechanisms. Additionally, the gas saturation model can be distinguished from water and oil saturation for Class I AVO utilizing the frequency-dependent abnormal characteristic. The frequency-dependent characteristic analysis of the physical model dataset verified the different spectral response characteristics corresponding to the different fluid-saturated models. Therefore, by careful analysis of real field seismic data, we can obtain the abnormal spectral characteristics induced by the fluid variation and implement fluid detection using seismic data directly.展开更多
TN942.1 96021288 电视系统中正确的彩色重现与摄象机的光谱响应特性=The correct colour reproduction of TVsystem and the spectral response[刊,中]/杨晓宏(西北师范大学)∥电视技术。—1995,(2)。—11—14 以色度学上正确的彩色重...TN942.1 96021288 电视系统中正确的彩色重现与摄象机的光谱响应特性=The correct colour reproduction of TVsystem and the spectral response[刊,中]/杨晓宏(西北师范大学)∥电视技术。—1995,(2)。—11—14 以色度学上正确的彩色重现条件为基础,给出了彩色电视传输系统中,实现正确的彩色重现时摄象机应具有的光谱响应特性的数学表达式,并对实现该光谱响应特性所采取的技术措施进行了详细的分析。展开更多
O462.3 95031973S<sub>（20）</sub>光电阴极光谱响应特性的理论研究=A theo-retieal study on the spectral response charac-teristies S<sub>（20）</sub>photocathods[刊,中]/常本康（南京理工大学电子工...O462.3 95031973S<sub>（20）</sub>光电阴极光谱响应特性的理论研究=A theo-retieal study on the spectral response charac-teristies S<sub>（20）</sub>photocathods[刊,中]/常本康（南京理工大学电子工程与光电技术学院.江苏,南京（210094））,刘元震（南京理工大学电子工程与光电子技术学院.江苏。展开更多
基金supported by the National Science and Technology Major Project (No. 2011ZX05019-008)the National Natural Science Foundation of China (No. 41074080)+1 种基金the Science Foundation of China University of Petroleum, Beijing (No. KYJJ2012-05-11)supported by the CNPC international collaboration program through the Edinburgh Anisotropy Project (EAP) of the British Geological Survey (BGS) and the CNPC Key Geophysical Laboratory at the China University of Petroleum and CNPC geophysical prospecting projects for new method and technique research
文摘According to the Chapman multi-scale rock physical model, the seismic response characteristics vary for different fluid-saturated reservoirs. For class I AVO reservoirs and gas-saturation, the seismic response is a high-frequency bright spot as the amplitude energy shifts. However, it is a low-frequency shadow for the Class III AVO reservoirs saturated with hydrocarbons. In this paper, we verified the high-frequency bright spot results of Chapman for the Class I AVO response using the frequency-dependent analysis of a physical model dataset. The physical model is designed as inter-bedded thin sand and shale based on real field geology parameters. We observed two datasets using fixed offset and 2D geometry with different fluid- saturated conditions. Spectral and time-frequency analyses methods are applied to the seismic datasets to describe the response characteristics for gas-, water-, and oil-saturation. The results of physical model dataset processing and analysis indicate that reflection wave tuning and fluid-related dispersion are the main seismic response characteristic mechanisms. Additionally, the gas saturation model can be distinguished from water and oil saturation for Class I AVO utilizing the frequency-dependent abnormal characteristic. The frequency-dependent characteristic analysis of the physical model dataset verified the different spectral response characteristics corresponding to the different fluid-saturated models. Therefore, by careful analysis of real field seismic data, we can obtain the abnormal spectral characteristics induced by the fluid variation and implement fluid detection using seismic data directly.
文摘TN942.1 96021288 电视系统中正确的彩色重现与摄象机的光谱响应特性=The correct colour reproduction of TVsystem and the spectral response[刊,中]/杨晓宏(西北师范大学)∥电视技术。—1995,(2)。—11—14 以色度学上正确的彩色重现条件为基础,给出了彩色电视传输系统中,实现正确的彩色重现时摄象机应具有的光谱响应特性的数学表达式,并对实现该光谱响应特性所采取的技术措施进行了详细的分析。
文摘O462.3 95031973S<sub>（20）</sub>光电阴极光谱响应特性的理论研究=A theo-retieal study on the spectral response charac-teristies S<sub>（20）</sub>photocathods[刊,中]/常本康（南京理工大学电子工程与光电技术学院.江苏,南京（210094））,刘元震（南京理工大学电子工程与光电子技术学院.江苏。
