惠勒域转换技术在地震沉积学研究中的应用——以东营三角洲沉积体系为例

Application of Wheeler transforming technology in seismic sedimentology-case of sedimentary system of Dongying delta

惠勒域转换技术是通过对地震同相轴的拉平和重排,将地震数据体由时间域转换到惠勒域,进而开展沉积特征研究。在东营三角洲沉积体系地震沉积学研究中,运用该技术自动追踪出沙三段中亚段目的层段内所有的层序界面,并在惠勒域中实现了三角洲期次的划分及对沉积韵律体空间展布特征的分析。通过与时间域的同步解释,自动识别出主要的沉积等时面。在此基础上,运用地层切片属性分析技术,突出了沉积特征在等时界面上的地震映像,进一步明确了三角洲体系的平面展布特征。

By means of flatting and resetting of the seismic events,we can transform seismic data from time domain to wheeler domain so as to study the character of deposition.It enables track all depositional isochronous surfaces automatically and classify the period of delta sands,so as to acquire spatial distribution of depositional system in wheeler domain during the process of studying Dongying delta system by means of seismic sedimentology.Combined with the simultaneous analyses in time domain,all chronostratigraphic events are auto-tracked.Moreover,strata slices increases the insight in the depositional history on isochronous surface,thus,helping the identification of planar distribution character of Dongying delta system.