标题:
地震沉积学在尼日尔三角洲沉积相研究中的应用The Application of Seismic Sedimentology in the Study of Sedimentary Facies in Niger Delta
作者:
赵福海
关键字:
地震沉积学, 波阻抗, 波形聚类, 尼日尔三角洲Seismic Facies, Acoustic Impedance, Cluster of Waveform, Niger Delta
期刊名称:
《Journal of Oil and Gas Technology》, Vol.39 No.3, 2017-06-15
摘要:
地震沉积学的核心内容是利用地震勘探技术与方法进行沉积相的辅助研究，其研究方法包括地震反射结构、地震属性、波阻抗和地震波形特征分析等。地震沉积学的研究，综合了测井相纵向上的高精度和地震资料横向上的高密度特性，特别适合于钻井稀少的盆地前期勘探阶段。尼日尔三角洲发育的沉积微相类型主要包括水下分流河道、分流间湾、沼泽洼地、河口砂坝等，利用波阻抗反演和地震波形分类等地震沉积学研究方法，在研究区内钻井的约束下，划分出阿格巴达组D砂层的沉积相，达到了在少井区利用地震沉积学进行沉积相划分的目的。
The essence of seismic sedimentology was to use seismic exploration technology and method for the auxiliary study of sedimentary facies; its methods included seismic reflection, seismic attri- bute, wave impedance and the analysis of seismic waveform characteristics. The study of seismic sedimentology integrated the high precision vertically and the high density horizontally of well logging. It is especially suitable for exploration in the basins where less wells were drilled at the initial stage of exploration. The sedimentary facies developed in Niger Delta included distributary channel, interdistributary sands, swamp depression and mouth bar. Under the constraint of drilling in the studying area, by using acoustic impedance inversion and seismic waveform classification D sand layer of Agbata sedimentary facies which is identified, the purpose of sedimentary facies division with seismic sedimentology in less well areas is obtained.