Key Techniques Analysis About Acquisition Planning And Data Processing In The Multi-Wave Seismic Prospecting

Investigating some key questions about the acquisition planning and data processing in the multi-wave seismic prospecting based on the exploration seismology and mathematical statistics and other theories, fundamental reasons and mechanisms about these key problems are proposed and there corresponding solutions are introduced. Meanwhile, the quantifying work direction to consider the data acquisition and processing with integrative ways is indicated too. Based on converted-points distributing with two periods and representing a parallelogram, the strategy for planning converted-wave acquisition geometries and joint exploration is introduced. The fundamental causes and mechanisms proposed for the acquisition footprint are stacking seismic data with equal weights which are not equal due to uneven AVO coefficients with uneven offset distributions. The attenuation measure for acquisition footprint is introduced based on its causing mechanisms. Meanwhile, the acquisition footprint can be quantitatively assessed planning acquisition geometry and some data processing procedures. Otherwise, feasible ways for checking and correcting the acquisition geometry before loading datasets are proposed by mathematical statistics. The minimal sampling capacity to make sure the above checking ways are reliable and credible can be a new quantifying and assessing the efficient fold of the acquisition geometry. The paper analyzed the primary reasons for exhausting a great of computing time by converted-wave velocity analysis and NMO correction and proposed fast resolutions.