论文部分内容阅读
空缺道记录的恢复和地震道内插是地震数据处理中一个有意义的重要问题,在“抛物线Radon变换”基础上,提出了这种恢复空缺道记录、重新采样和单个CMP选排的数据的记录剖面预叠加的规则化方法。该方法对空间假频地震数据的重新采样也是有效的。本方法是基于对地震波为抛物线的假设,该假设一般在对CMP数据编制作部分NMO校正后可得到证实。这种方法的精髓是对数据(这数据还包括在缺失道处的零记录道)作带限抛物线Radon正变换。曲率范围被选择于正确绘制相干的能量,而零地震道绘在该范围之外,经过反变换,那些原始零地震道部分地获得了信息。经过正、反变换几次迭代,每一次都以部分重建的记录道来代替原始选排道集中的零记录道,这样几乎全部恢复了零记录道。研制出的高效算法可以处理具有均匀几何状态(指采样间距均匀)的数据。人工数据和野外数据的实例清楚地说明了本方法的健全有效性。
Recovery of vacant records and interpolation of seismic traces are a significant and significant issue in seismic data processing. Based on the “Parabolic Radon Transform,” this data is proposed for recovery of vacancy records, resampling, and single CMP scheduling The regularization method of pre-superposition of recording profiles. This method is also effective for resampling spatial aliasing seismic data. This method is based on the assumption that the seismic wave is a parabola, which is generally confirmed after partial NMO correction of CMP data. The essence of this approach is a band-limited parabolic Radon positive transform of the data, which also includes zero traces at the missing track. Curvature ranges are chosen to correctly coherently draw energies, whereas zero traces are plotted outside of this range, and the inverse of those original zero traces give partial information. After several iterations of positive and negative transforms, each replaces the zero track in the original track selection with a partially reconstructed track, thus nearly zeroed out the zero track. Efficient algorithms have been developed to process data with uniform geometry (ie, uniform sampling spacing). The examples of manual data and field data clearly illustrate the robustness of the method.