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Characteristics analysis and matching of surface seismic, VSP and crosswell seismic data

机译:表面地震,VSP和Crosswell地震数据的特征分析与匹配

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3D surface seismic, VSP and crosswell seismic data play an important role in the field of reservoir geophysics, the characteristics analysis and matching of different seismic data are very important for the integrated research of these data. It is feasible to build the relations and differences among these different seismic data according to the seismic wave modeling and real data analysis. With the finite difference modeling of the wave equation, the different observation style and source frequencies are used, the RTM is used to get the migration profile respectively for surface seismic data, VSP and crosswell seismic data. The modeling result shows that the surface seismic data, VSP and crosswell seismic data represent the seismic reflection characteristics of undersurface geologic body within different observation range, frequency range and resolution. The time-frequency analysis of these traces shows that the borehole seismic (such as VSP and crosswell seismic) data can provide quite reliable high frequency information, which is very important to improve the resolution of surface seismic data. These characteristics are also found in the actual seismic data. The relation of the frequency-spectrum range among different seismic data is the basis of the joint inversion and application. For the field data, the matching of different seismic traces can be achieved with the precise calibration with the same well logging data. The matching of different seismic reflection characteristic with the accurate T-D relationship is most important for the real seismic data, which is the foundation of the joint inversion, integration research and application.
机译:3D表面地震,VSP和Crosswell地震数据在水库地球物理领域发挥着重要作用,不同地震数据的特征分析和匹配对于对这些数据的综合研究非常重要。根据地震波材建模和实际数据分析,建立这些不同地震数据之间的关系和差异是可行的。利用波动方程的有限差分建模,使用不同的观察方式和源频率,使用RTM分别用于获得迁移简档,用于表面地震数据,VSP和Crosswell地震数据。建模结果表明,表面地震数据,VSP和Crosswell地震数据代表了不同观察范围,频率范围和分辨率的下表面地质体的地震反射特性。这些迹线的时频分析表明,钻孔地震(如VSP和Crosswell地震)数据可以提供相当可靠的高频信息,这对于改善表面地震数据的分辨率非常重要。这些特征也在实际地震数据中找到。不同地震数据之间的频谱范围的关系是联合反演和应用的基础。对于现场数据,可以通过使用相同井测井数据的精确校准来实现不同地震迹线的匹配。不同地震反射特性与精确的T-D关系的匹配对于真正的地震数据最重要,这是联合反演,集成研究和应用的基础。

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