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地震沉积学在陆相盆地中的应用——东营三角洲勘探实例

Keywords: 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

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Abstract:

?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。

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