CT理论与应用研究2025，Vol.34Issue(3)：409-418,10.DOI:10.15953/j.ctta.2024.223
分频AVO技术在西湖凹陷中深层薄储层评价中的应用
Application of Split-frequency AVO Technology in the Evaluation of Middle-depth Thin Reservoirs in the Xihu Depression
李洋森 1王伟 1李炳颖 1毛云新 1刘晓晖1
作者信息
- 1. 中海石油(中国)有限公司上海分公司,上海 200335
- 折叠
摘要
Abstract
Owing to the combination of factors such as the thin layer structure,thickness,and fluid,the wave field characteristics of the thin layer are relatively complex,which results in large uncertainties in the thin layer AVO analysis.To address the complex thin layer simulation problem,this study uses the reflectivity method to conduct AVO forward simulations of thin reservoirs,and finds that the AVO response of the thin layer has an obvious"V"feature at the far offset owing to the tuning effect.Comparing and analyzing the thin layer pre-stack gather in different frequency bands clearly shows that the seismic frequency band is wider and that the AVO amplitude curve of the pre-stack gather is more stable.Using high-resolution time-frequency analysis,the AVO stability can be further improved by performing the frequency scanning analysis on the pre-stacked gather of different frequency bands and selecting the advantageous information of the AVO information that changes stably in the seismic frequency bands to be reconstructed.Through the actual pre-stack gather verification analysis,the advantageous frequency band information of the pre-stack gather can effectively improve the reliability of hydrocarbon detection and provide powerful technical support for the detection of hydrocarbons in the middle and deep layers of the Xihu Depression.关键词
西湖凹陷/薄互层/分频AVO/优势信息Key words
Xihu depression/thin interbeds/split-frequency AVO/advantageous information分类
天文与地球科学引用本文复制引用
李洋森,王伟,李炳颖,毛云新,刘晓晖..分频AVO技术在西湖凹陷中深层薄储层评价中的应用[J].CT理论与应用研究,2025,34(3):409-418,10.
