地质通报2024，Vol.43Issue(6)：994-1003,10.DOI:10.12097/gbc.2022.09.024
基于二维地震数据的北部湾南康盆地南缘地层结构探测研究
Stratigraphic structure exploration in the southern margin of Nankang basin in Beibu Gulf based on 2D seismic data
摘要
Abstract
Near surface two-dimensional seismic data are widely used in stratigraphic structure detection,but there are few cases of extracting relevant attributes from two-dimensional seismic data volume and applying them to sedimentary environment interpretation.By using a variety of pre-stack noise removal,amplitude compensation,deconvolution,high-precision velocity analysis and stacking processing techniques,a stacked seismic profile with high signal-to-noise ratio for stratigraphic structure division and attribute extraction is obtained.In this paper,the T0 values of basin basement are extracted,and the seismic attributes such as root mean square amplitude,instantaneous frequency,dominant frequency and bandwidth are optimized.The T0 spatial distribution map of the basement burial depth and the distribution map of relevant seismic attributes are calculated.The results show that the buried depth in the northwest of the basin basement is less than that in the southeast,showing a trend of dipping in to the sea from northwest to southeast;the basement target sedimentary environment with shallow burial depth corresponds to high root mean square amplitude and high bandwidth.The basement target sedimentary environment with large burial depth corresponds to low root mean square amplitude and low bandwidth,and the instantaneous frequency and dominant frequency also present low values.关键词
盆地基底/地层结构/均方根振幅/瞬时频率/主频率/带宽/沉积环境Key words
basin basement/stratigraphic structure/root mean square amplitude/instantaneous frequency/dominant frequency/bandwidth/depositional environment分类
天文与地球科学引用本文复制引用
陈松,徐俊杰,孙尧,刘圣博,刘磊,陈长敬,王磊..基于二维地震数据的北部湾南康盆地南缘地层结构探测研究[J].地质通报,2024,43(6):994-1003,10.基金项目
古生物与地质环境演化湖北省重点实验室基金《北部湾南康盆地南缘凹陷地层精细结构与沉积环境地震属性研究》(编号:PEL-202212)、国家重点研发计划项目《地下水源智能可靠勘测关键技术及装备研发》(编号:2020YFC1512401)、中国地质调查局项目《北海海岸带陆海统筹综合地质调查》(编号:DD20189502) （编号:PEL-202212）
