大庆石油地质与开发2025，Vol.44Issue(5)：45-51,7.DOI:10.19597/J.ISSN.1000-3754.202504070
基于叠前OVT域的地震沉积学薄储层描述方法及其应用
Seismic-sedimentology thin reservoir characterization method based on pre-stack OVT domain and its application
摘要
Abstract
Post-stack seismic data is affected by stacking,which results in lower reservoir prediction accuracy,while low signal-to-noise ratio of single OVT data makes it impossible for direct reservoir prediction.Aiming at the aboved problems and starting from the pre-stack seismic gather data,seismic processing methods of OVT noise sup-pression,amplitude energy compensation and small-area stacking are used to suppress the noise as much as possi-ble and enhance the signal-to-noise ratio(SNR).Meanwhile,mathematical operations and RGB attribute fusion are applied to small-area stacked OVT data to fully extract azimuthal anisotropy information from pre-stack seismic data while improving SNR.The processed OVT data is then used for channel sand bodies prediction.The application re-sults of this method for development and adjustment of BYEPX block in Daqing Placanticline oilfields indicate that,the identification conincidence rate of channel sand bodies with a thickness≥2 m based on pre-stack OVT domain seismic attributes reaches 92.3％,which is 7.7 percentage points higher than characterization results based on the conventional seismic attributes.The reservoir characterization results show good results in guiding the development and adjustment,and the research provides reference significance for development adjustment and application in other blocks.关键词
储层描述/地震沉积学/叠前OVT域/信噪比/RGB融合Key words
reservoir characterization/seismic sedimentology/pre-stack OVT domain/SNR/RGB fusion分类
天文与地球科学引用本文复制引用
李红星,司丽,佟洪海,肖建华,王泽东,张金宇..基于叠前OVT域的地震沉积学薄储层描述方法及其应用[J].大庆石油地质与开发,2025,44(5):45-51,7.基金项目
中国石油天然气股份公司重大科技专项"中高渗油田特高含水期大幅度提高采收率技术研究"(2023ZZ22). （2023ZZ22）
