几项关键处理技术的保幅性分析及应用  

Relative-Amplitude-Preserved Analysis and Application of Some Key Processing Techniques

作　　者：吕小伟[1] 钮学民[2] 

机构地区：[1]中国石化胜利油田分公司新疆勘探开发中心,山东省东营市257000 [2]中国石化胜利油田分公司物探研究院,山东省东营市257000

出　　处：《中国石油勘探》2012年第2期44-49,89,共6页China Petroleum Exploration

基　　金：中国石油化工股份有限公司项目"地震叠前宽角度反演及储层表征技术研究"(P09071)

摘　　要：目前,地震资料振幅及波形信息越来越多地应用于岩性圈闭的识别和评价,对处理技术的相对保幅性要求也越来越高。但目前的地震资料处理技术和流程多注重以构造成像为重点,而忽略了处理方法及参数变化对地震波振幅的改造,影响了处理结果的保幅性。为此,基于实际资料和模型数据,对面波压制技术、几何扩散补偿、预测反褶积技术等几项关键处理技术的保幅性进行了分析,并提出了保幅性更好的处理方法和流程。分析结果表明,采用优化后的方法和流程,面波压制、几何扩散补偿等处理环节的相对保幅性可以得到明显提高。Currently, the amplitude and waveform information of seismic data are increasingly applied to the identification and evaluation of lithologic trap. The requirement of relative amplitude preserve of seismic data is higher and higher. But the techniques and flow of seismic processing mainly focus on structure imaging, and its effects on amplitude are often ignored, so the processing results are often badly amplitude-preserved. Based on real and model data, this paper analyzed the characteristics of amplitude preserve of surface wave suppression, geometrical spread compensation and predictive deconvolution techniques. On the basis of amplitude-preserved analysis, optimized processing methods and flow were proposed. The result showed that the amplitude features of seismic processing results could be preserved better.

关 键 词：岩性圈闭 相对保幅 反褶积 面波 几何扩散 

分 类 号：P631.4[天文地球—地质矿产勘探]