港西油田明化镇组河道砂体检测
|
摘要
港西油田北斜坡新近系明化镇组发育典型的曲流河沉积,其中河床滞留沉积和边滩沉积(点沙坝)组合是该区重要的储层类型。为了检测明化镇组河道砂体,应用广义S变换对叠后地震资料进行分频处理,采用精确时窗分析法,在振幅调谐优势频段数据体上沿层提取地震属性,展示河道分布特征,结果显示河道特征清晰自然,与钻探成果完全吻合,达到了预期目的。
Typical meandering stream deposits developed in Tertiary Minghuazhen Formation on the north slope of Gangxi Oilfield,of which channel lag deposit and point bar deposit(point bar) combination are important reservoir types in the area.In order to detect the sands of Minghuazhen Formation,the generalized S transform is applied to frequency-divisional processing of post-stack seismic data,and precise time window analysis is used to collect seismic attributes on the amplitude tuning dominant frequency spectrum data volume along the layer,so as to show the distribution characteristics of the channel.The results show that channel characteristics are clear and natural and fully consistent with the drilling results,achieving the desired purpose.
Typical meandering stream deposits developed in Tertiary Minghuazhen Formation on the north slope of Gangxi Oilfield,of which channel lag deposit and point bar deposit(point bar) combination are important reservoir types in the area.In order to detect the sands of Minghuazhen Formation,the generalized S transform is applied to frequency-divisional processing of post-stack seismic data,and precise time window analysis is used to collect seismic attributes on the amplitude tuning dominant frequency spectrum data volume along the layer,so as to show the distribution characteristics of the channel.The results show that channel characteristics are clear and natural and fully consistent with the drilling results,achieving the desired purpose.
引文
[1]Kazemeini S H,Sergey Fomel.Prestack spectral bueing:A tool for increasing seismic resolution:78th Annual International Meeting,SEG,Expanded Abstract,2008:854～857.
[2]Partyka G A,Gridley J,Lopez J.Interpretational applications of spectral decomposition in reservoir characterization:The Leading Edge,1999,18:353～360.
[3]高静怀,万涛,陈文超,等.三参数小波及其在地震资料分析中的应用[J].地球物理学报,2006,49(6):1802～1812.
[4]Stark T J.Visualization techniques for enhancing stratigraphic inferences from3-D seismic data volumes:First Break,2006,24:75～85.
[2]Partyka G A,Gridley J,Lopez J.Interpretational applications of spectral decomposition in reservoir characterization:The Leading Edge,1999,18:353～360.
[3]高静怀,万涛,陈文超,等.三参数小波及其在地震资料分析中的应用[J].地球物理学报,2006,49(6):1802～1812.
[4]Stark T J.Visualization techniques for enhancing stratigraphic inferences from3-D seismic data volumes:First Break,2006,24:75～85.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心