【摘要】 利用频谱分解和地层切片多属性综合分析技术,结合关键井岩性资料及不同成因类型砂体的地貌形态,在塔北却勒地区三维地震资料区古近系开展地震沉积学应用研究。优选出的GR拟声波反演最能有效预测目标砂体。通过对一系列典型地层切片的分析研究,结合钻井信息进行动态解释,可以看出研究层段主要为扇三角洲前缘水下分流河道砂体和席状砂,纵向上主河道多期迁移叠置,扇三角洲前缘水下分流河道砂体间沉积了相对稳定的滨浅湖泥岩。更多还原

【Abstract】 Seismic sedimentoiogy is the use of seismic data to study sedimentary rocks and the processes by which they are formed.It mainly use 3D seismic information and modern geophysical technology to study sedimentary systems,sedimentary facies spread and its evolution history.We use the technology of the frequency spectrum decomposition and stratal slicing,the key wells constraints to facies types,as well as geomorphic features of different sand shapes to start seismic sedimentological studies in paleogene thin-bedded sand section in Quele,Tabei Uplift.By analyzing a series of typical stratal slices,we find that the target zone is mainly subaqueous distributary channel of fan-delta,the delta lobes override in vertical profile,and lacustrine mudstone deposits between underwater distributary of fan-delta.更多还原