地震沉积学在陆相盆地中的应用---东营三角洲勘探实例  

Seismic sedimentology in the exploration of a continental basin:A case history of Dongying delta.

作　　者：刘书会[1,2] 宋国奇[2] 杨培杰[3,1,4] 

机构地区：[1]中国石化胜利油田分公司地质科学研究院,山东东营257015 [2]中国石化胜利油田分公司,山东东营257015 [3]中国石化胜利油田地质科学研究院,山东省东营市聊城路2号257015 [4]中国石化胜利油田分公司博士后工作站,山东东营257015

出　　处：《石油地球物理勘探》2014年第2期360-368,222-223,共9页Oil Geophysical Prospecting

基　　金：国家科技重大专项课题“渤海湾盆地精细勘探关键技术”(2011ZX05006);中国石化胜利油田分公司博士后课题“陆相断陷盆地地震沉积学关键技术研究及应用”(YKB0905)联合资助

摘　　要：地震沉积学在地震地质综合研究中已得到广泛应用,它主要涉及三项关键技术:①利用90°相位转换技术估计地层岩性;②通过地层切片技术解决同相轴等时分析问题;③采用分频解释技术使地震解释结果的地质意义更加明确。这些技术在处理海相大套沉积以及垂向上变化平稳的河流相沉积问题时效果明显;但对于横向上相变快、纵向上相带窄的陆相沉积地层,应用效果却欠佳。本文在对地震沉积学进行归纳总结的基础上,阐述了地震沉积学在解决陆相盆地沉积问题时所存在的不足及其解决方案,并自主研发了多项有针对性的解释技术,将这些技术应用于东营三角洲地震沉积学解释研究中,取得了较好的应用效果。As an emerging branch of science,seismic sedimentology is widely applied in seismic-geology comprehensive research around the world.Seismic sedimentology involves three key approaches:A. Estimating formation lithology through 90o-phasing conversion,B.Implementing seismic events isochronism analysis through stratal slicing,C. Making seismic geological interpretation results more meaningful by frequency decomposition. With these three techniques,better results can be obtained in areas such as marine and fluvial sedimentations with smooth change in vertical direction.However,they usually fail in continental sedimentary strata with fast change in both horizontal and vertical directions.In review of seismic sedimentology applications in continental deposition,we discuss its shortcomings,and propose some solutions.These specific approaches are applied in Dongying delta,and good results are obtained.

关 键 词：地震沉积学 地层切片 同相轴等时与穿时 陆相盆地 分频技术 90°相位转换 岩性估计 时频分析 地震Wheeler转换 

分 类 号：P631[天文地球—地质矿产勘探]