【摘要】 塔里木盆地库车坳陷的迪那构造带属于典型的高陡复杂构造,地震成像较难,浅层成像更是地震勘探领域的一大难题。对此,通过在采集激发技术上利用大、小药量交替的双套激发新技术以及相应的浅层精细处理技术,在迪那3号构造取得了较好的地震资料:剖面各层信噪比、目的层同向轴连续性较以往地震处理结果均有明显改善;浅层反射从无到有,浅层背斜构造明显,剖面构造与地面地质构造完全吻合,细节清楚;深层T8反射由弱变强,可连续追踪。更多还原

【Abstract】 In Kuqa depression of Tarim Basin, Nida structure is a typical high-steep and complex one. So, it ’ s very difficult to carry out seismic imaging, especially for some shallow layers. In this study, a new double excitation technology, large charge alternating with small charge, and another technology of shallow-layer fine processing have been applied to the structure. As a result, some better seismic data are obtained; both signal-to-noise of different layers and continuity of target bed are obviously better than previous results; the reflection from shallow layer indicates that there is an evident anticline structure; cross-section structure is fully coincident with geological structure at surface; meanwhile, for a deep layer T3, its reflection ranges from weak to strong.更多还原