地震资料处理解释一体化的质量监控技术研究

Quality monitoring technique for integration of seismic data processing and interpretation

为了确保地震资料在成像精度、分辨率和保幅方面满足解释的要求,需要对地震资料进行处理解释一体化研究,其关键在于对一体化的各个主要环节加强质量监控。主要做法包括:以近炮检距的标志层解释层位为基准,进行中、远炮检距叠加资料的时差检测,进而确定地震资料是否需要进行精细速度分析和各向异性动校正等处理;通过新、老资料的对比和相干体、时间切片上断层成像是否清楚监控成像质量;利用全波形CRP道集分析标志层和主要目的层的振幅能量随入射角变化是否具有相似性,进而判别偏移结果是否相对保幅。通过这套质量监控措施,并采取针对性处理对策,取得了良好的效果。

In order for processed seismic data to meet the need of seismic data interpretation in imaging precision,resolution and amplitude preservation,the integrated studies for seismic data processing and interpretation are needed,the key issue for that is the quality monitoring of the main links in the studies.The major studies were carried out as below:①Based on the near-offset interpreted horizons for the reference markers,the time difference testing for middle to far offset stacking data were conducted,so whether or not using some processing modules,such as fine velocity analysis,anisotropic NMO correction and so on in the seismic data processing,can be determined;②By comparing the new and the old data and judging the clearness of fault imaging on the coherent volume and time slices to monitor the imaging quality;③The full wave CRP gathers are used to analyze if the similarities exist for the AVA features of the markers and the major target zones,so we can judge if the migration processing is relative amplitude preserved.By conducting the quality monitoring measurements above and utilizing the corresponding processing workflow,the excellent results were obtained.